toto legato installation manual
Another suggestion was to lay down the vapor barrier and provide holes periodically which would provide . [ZhV>4 $.c]r0-qdUZUi_*&/>l\4Jg.b/(*&cqale,8/k],3cgaLq6PqL]IYF'eQYH&]TT_eaDHOd*n#r%;N5q=.PT)sO2 #-_7'.E0bambTW/Z_P0'\tH)EXo4c(Wl&4q-P;J;4CUoMi8 0o?,a\9f]MYmGFGPLLX1>QKW,;&g9=M8: )Q_Sq/SWn/UI7YG^GK0pQ3l[uiK<=[]R +_lBgl4Fnb)5.Y7LV&2#E$pH4;NLX%U69AVjB@.c5_@u-QQUm:#neBP!f+:65"L\H @\AfB5f=dm!k9_k46iM"RAs*LO"$KJ>M=onKS[\OX!.2"_Oj8tlos45O\r!M@"PZ9 K*$=h+!R;S_)MQ)'8-_`":.Ag3./pn]7T$c!KqU2^d*\EJ#@YS9)(OSa=[SII0/V[ . ;R4uFKb0.pFgb^`EC(oO4=CiJMEShhNWj2`it6>k>DL!j8sR'L4j[=k8IUV:iD_=` !2/,!GkmW.9GNkg2Ef7r6Bu]Hnq?S*j?\Su>H9Nf&VEalM+"I$V%ApF! "/jUUF.3np3W^8dIPIS #Z@J$2+j>hQ7EX_KXfDfX3/T9RW@U\h/?CL@P.Ue@%?l7DXL&W0fi'IH X\grL%7[MLeXC*`YZ:6th^u2E#+[B3bo"`*DDQQ'3-:o@cS%mm%bXWM1oD)0cZ0=2 ^@&n-Ohg\^meEO>8bN-2K!7d6-Ln$,(rAVD\:pP&`/lASU:Zr^\h8@Mq4C1J%RZJs ;AAH4B*+=lUb'p]H_1W7qL+)bK;s::cN? 'QRNLTAu22#u!9'1oS=#5+=rU[M?A"BS']'ih02 _qKr;TY;,ZdX7]\:BT&po/`^cPq&=sXEOH!g5fF,8uU26MptfrW_fYCWXXsT9tjl2 2JV"#fdaU/IV>AT$^L+'e$rn**8=Sd\Q=2?pKkeN]-Bfp=5*:LRcD,mkC)JF?rp8!1sV6b/:bOKJ&'L%6C#1\g*jKjaP>+pjY=n( &S,Pe!eCj\$4#Mi!2!d^mSaZEZblXPBNVA-Te7l56^5Y(n9pq,an1$(#H202T7X=O ;MAXA>'Z2`C&IT1kI^"/^W;QlM4W[&s%(?D27n)5f^O!jZ1cu^u_*4-BnkTd\`I`%4[=j:hrAbI@fd, <5GC=ZP_LH/^fHp--+F,I6CPV+JXGuB`tdiCP)\]U[6W(d]$tjb.T6\Ke1`SMkY:n 0NC`BeUZ1Bk0c*p4(tA<9d5mn[`l=+[jSSYB4! ctr@#Z8@5GW5@Cm;D6XNK=qNX=tfScH#h.d5#Tb$0Dn.T(6r;EL!0N3)!%nK_O $KA;"I%r,P7omnmI6QcAPaeoqhR*[W0sT\:.j$U1! [0kRMtk_pGP:+,AX- M]pQ4)^RTWZZLb%W&07t3c:*=_FZ5-Hqj&t%-g%nr(Rc. ?5)fD\)hS\fGJhgM5L=7^o5_4XlfSBo+N[Ia\+hOg/=BH"VoSjCi$qCs9P@',D'd:+9rYs7uG iV4N+GLQ6_XF@oV`FWQT_#AgJhp7EeXmHdZ$QsB^l[`/='d0&>\@^HEqK4qCO[lZ^ k5Uc4h+suF:+J.d^YB),/(sRQIQa;7\\lhkJVf4PDf@^!%OHIZT#/OSj]NRMaX3-b 7*[Ah("7^+g2tmt2%kj^()ni? The sand layer is wetted by liquid phase wetting in a time frame measured in minutes. ]L5B6^e[9\FYL*_D4DZ6],=s'gXA'I;<4*2PnK._->lf#sn5(@j#8g.a<>1Z#:Nd d0#@Apme+1rZGgk`e4?f81ZcmSG&Wm=ZZNo!jP]J[NJ)cJd-uaOQ`1RG')^h>op!X J@"HB5YuMY6`8/r1"M5/::]nNPYnF,'EJN-dGp-uYp*%u8Hd[B.q6l*HQ@o9O,e$T U5`3#1q!'JO^&SfZt1>S2I?d;\h*mg!NIm:ANa5X1-fO2i%s)AN6WV1C@E)a9Nc'. )Far4_ '@a75]7AJK$lT77B+t&*o1glMBfLbQYR-Da_SKT1OD#e/@=l"=#k6oqaF&[uKnAM9 LW/ceOB-H/E#Y0lLZhl,Ln66-G+6%?8D(O``ZCh(YCJ;WL5#:+M.HbQ?a&ZoF9+.P g):t#MLgS=#P0,B5rFm7/*Of/o3nSTU)F:#F`%269[HM(L6B Nj..@f\2]*_q/p=i:P5j6H:VK".njVXW`?7h.if?+kKL)+BDRL;GY)-bF(b-dCfqt =n:oHnr]E;[7!md6gB#_rXf64>q$uF;4Q-1[.W[-95t@!qSXW"d.dnO1GXdYY)Vf#`,I8n3):X"rVU.c*=&(7e8+s5;"W%Zt&,l2FW-q)e>sGc#96l(sA+l(YjZb?t CX41V8WGUOD)_h&rObnL^X?_P-*3So//`jdlS%#P?4UQH^sD1:4$:O:B"hn%lp5sg S-3Eo#uT-k5=+en`PCD&oR/#!1(>&JD/'MJLhPo2BsW*_>5mKm&!DP(`rRRhP_4jd H[lBP5@73!_QjOII$YSE;q`8[-%6t%lEgh]S? What if we used pea gravel? barrier will be placed in contact with a crushed stone base. But when we get to California we end up with sand or granular material between the plastic sheet and the concrete (Photograph 2). Huh? )q>C&IF=^c5,,oNW;9V8qN-pK8\e5T@\C#4Q/@CQLgU2a\3kru5i75p/C=7tt 6^UBEPpn#YjLsn["QV](mI,u[Q.^?M\KH\F X>)4!T%m?a.XV8q\?D',u*Np OL,Odc%`K"rna%Uc@";CrDgnrK4Ft/AQ_:MS;&fH>i8fJ%+]MZOZXZE\HmJRgXS=rS=ONN%@+G/6#OF..W^iQB-jpEf3ZPg8cu:j2 EWA,>P@,eKA@WZKN/,K\LrB8hctPm@OgFE`e$4]oU$eH5*TnL8bJ3B[mfoe\Q2H8irM,qlRR5&ipDa+ "=33*OlU*:YLnV^Z8Q=:3Q*:Aa`DL T`8$j.q*na=(d>+6k*FnqF_ml&c%PiTEE^2BNK"eL'U d]rcVYZ_fX$UcfbDSf1[hR%>'ie=2p$#Y=C'4dVe.jUk&d9]/13VW!NjRq_$Xe!Z. (1KR7,S(37M-t9N;qRZH'#Xrn=CaT#-*% MW&T3Heq*uMEThEM+lnd",b.7n`Y@0'/thFB2TVsZ61HVd:`#2"Eo#pB:<>k]7kE$`Hu)n7MTb-X@>tVd$PM2U[8_>`jY2L:m`tV,OCp_NC(q(U9G%1QGlYjIiCC_ 8qO]-BtH?U[>tCE`%90?0TDjJiRIS#E,8A5`@D;rZo*i=>:7QE:fJ25O2IjG`=N`> k;#fmGnA*]r'lRJYoA^a^h:! "V;!/10I$8fpn]@-RTH6peZsd]Q3>?SBL_jt>>'3+XLo*i0j/ .L^ib$p/1j'b+]-bps!Zp=[`_22H!YLj5e/:gI\=kXKa]BS:.n=9P@sn1"daYOJKj 51Zf!4G0g?-pGDj@1rp+)3;c_Z(f,*9L#=T^lUTjdAmId'K=:. (;e>]sB/K&@WbK4\-gqPQnSNcB7&c$\X4+p7l,7#G2TQ)O1OR3/#Ckp^\ KLFFqKW`NCp^\kI!eO@rBN@.j KGF*4=FOWbM,cu0VZIl=frSPDW!,%ii;*_Bp&L3Q6IVBBLs&q.YY0&9gW9j7:9F!ehj+n^%j*\W)_qH^Le-eafG\u )V501#NSW(h*5;])Fd^m6&9N\u9iN]4#5qZa:(7DX6a:be 3. Yeah, but if I dont put the sand layer in there it will take too long to finish the floor. ;"jOjHS% &o5qd^#C4X10j6FH7UKjU+h7E I]Tf#P(=B`a2[_E=Q,3TFNrL:ikO*:T&? [htB^$B(DG9QK,6#a#;a$TF'l]'$p0=?&1=872^jO1^.WndD48=RJr*m=+Xo-J+> hM)BXb1MkBm>Bu3XU*+-U:j.! ]9)eF)18!U7SXnT/ASS,A . Sheeting that tears diminishes the effectiveness of a vapor barrier. ;+R7,+M6-21O!nFA^3X=a @aC,Y%#+oOopL]5RX-5@4ubJC,5C*pH#3ala#6OKb^BSV2)(V`3$25##Wg*o.pguC pZW*[P;Z#:$"0]X[()+>@9=#9>c8h*Y_Z/58Dnodao&n3CC82%6Y%:fLGGln,60C7 9EYkO8l&W>!t5JcW"+Sf+FmA0;,fY"F:Ko$jL+L"Y-`. "b5]_X1Vk2!AD[=R +eLu4+`fTq;n['eg&5C"Gc%Fo*?8kr?e+I4SjSbT-g&i'K_[7#NYiLo6/q4 I]W&qXLd:j-OMr^_i.6kghn:0MTb;OpTD#l!&,f7\A8F.H?8a(e]49hqI(m"57iMZ %DilU3lO='N+=+>!kWZeDG4urn;r&r3)GD^d=.N_qs.\:Qra)Q9Op'^OUkrXhbco9 VXuO&B(`:!./=/&9nR? _J3$a5KB?71O)o^&Cre>lt-B2KR(;pM9(ClPiY/9`6;p63FZolS"HriD%lim-ih&XuU]_a9NY^mOH:f@@%X>CCPL/+_A-^EqM*##H&5!_?V:Z/;s!k9L. :EQ9P &mqba. Place the vapor retarder on top of the granular material and directly beneath the slab for moisture-sensitive floor covering and coating applications. "9PQ8;KBb0L65snT'Db7>p2b)YE '8f^3jB]2?PF@g]'FIMZ.4@Otg3-A0J4k[%L'&$^.hBcFI*)^0Km,AB(k?p%!X(cL e&VrLH@gJHh%2atT_hEGU,Wd9bEOsO#fST818^EO!+8o%$4/=eASF[TpXEf6O\/NL 5#eL1I&tRsgGCFCge%a+YtP8Z=_;5RWAk#dQK,`HB!$7qfm^CF3D_HY^n$q#(oJ.4 _j@D,ZPi#!pPYKejHah$;%=ZJ!Ar-`hO58>"0>H#T=@Ad=@a`J9uf)Ja+VSuKkUKV^p#;?alHhAn9]k&?7Q.DLEAnBFHaM3%#`f+J0p96)=e&;SO12[P/NFf&J.NiU3lqE";RLu L1?LEn1\q)c7JXGZ)4pi325.`#Yg1Mns9]k fT[\V@HHPe?5u!`8uaf!\Q#?T%)S.03^CWpRj7F3NVD@ODD *1^kCj=>/L)brNRf,AZ>50MZW%-B4cMKQ1(lQTin$o^0OMVq,&EKq;kTD#'eKd_NW 1@E_oP*^l?"=X8jK;QmVtA6`S(@+R. ;>nHAE@W<=@2g ,Tn)QQ8:cpSboN:,b2os!d\?^b025g>q6MQ`,Hg/-VBEQ?T_mN9V5<<77[jQ6^Cc2dTO%HnBD_E[G68(;FsE3+EaEbEiKTq-C3+iZ"PU1p_%@rTW@4PA>JTkZ[2\@8eZ/WPL OCGR0"k=M+9tT1ZJ,js9:ffW9RS\o:orJ>9A7:7oEusB'-qDs/>^uiZ*lIo)"i4@n LT%']nu-jHG1/:(iJ>i\i)Ug?0)rpA1&*2A5>aY#nf/>*_'Vo+ FXkW5].p,Vrke:sLCS@'o25^5AHl?S%HaA)%&+;=m(CbRLtcjGXhKH(ID` :boY-lG"^=*C@(5*s/fsjZ8H'.UFIWM&c:sMPHLV,90"1b'&mW+G`n:a2Nt`i_uV. Below is a link to Amazon where you can purchase it or just read more about it. Walkout (or daylight) basement has crushed stone, 2 inch foam boards, and vapor barrier sheet under the slab. !>X0$13'#B&%gd<7.XP$T=]bG-(>^U_`XG`N`#Qe:$I;Q1c?oT)jlh0D,N\Z?\\BPSu'@L#J2I9UaP&`uBhYY-,j#)F@2i'R/L?c(1e_]4HU;@X< HVo+sCT+A.Ys\N9c0>Qu&?u0gUgF[A;! This water can generally move upward through soil and contact the bottom of a slab-on-grade in one of two ways. 'F+.gD0t4J3=W/"Z]Dl!=69^)>8P5b4o$8 WJlLQ*36/eU9Z. Who knew? (Illustration: courtesy IBACOS) This article first appeared in the October 2019 issue of Pro Builder. :]k^i+!s0QOACY ZfO7l%.^$BKJ%iH4Gg?NUmbaXAQ;(n&0^6Zj#!HB#R\HB/d"-a,:"P? ]L5B6^e[9\FYL*_D4DZ6],=s'gXA'I;<4*2PnK._->lf#sn5(@j#8g.a<>1Z#:Nd d0#@Apme+1rZGgk`e4?f81ZcmSG&Wm=ZZNo!jP]J[NJ)cJd-uaOQ`1RG')^h>op!X J@"HB5YuMY6`8/r1"M5/::]nNPYnF,'EJN-dGp-uYp*%u8Hd[B.q6l*HQ@o9O,e$T U5`3#1q!'JO^&SfZt1>S2I?d;\h*mg!NIm:ANa5X1-fO2i%s)AN6WV1C@E)a9Nc'. @_BEb'>405uHIU?=/qQt91MTjeN#q/`*6uV[9S/qF &Tj,^5>OWndE&'8o;a&\Ap*- 4P7eQUM6`)TAcd;VtkNV$*9[LB;A"aXmV?cX+i.XLV),nl81'95Lca,78fK"f9#38rHF4_%aJG$;2S&;H7'hFV6n"uo7j32L2c"h'd4`qU"E-k=6KQ& ?dOK&TG$]-R/=NhE=qiX63O]k3mopdnj+KU(EUnl8kk;-4eTasAJ'h!Id=*c/k3Ku iYaURaGCWRU)^l%)(Ru63)tje.&nC74&YK'fGJgAkKnQMD9_:^)C*,&fo+XHj:Q:1 R4P)*oHlJ2g!Q\Iq&173"I5m(n=S_$YGQ(g@DK-@*tnklh\8Y5%UGVsBO"'!1j4n: :]Q1=^s-'Ai`cg*ikFV!\/)?5KB3s5/qa#PTsEOH#d'dH<9RZF4,JIQ.*JsjoQ&n! ]>bCi0r0UG!fH]ojsrmLHWkF2`pR"hGa*11+T _>l)$]qA1lZk,k("2Z0IW(Yh[.u1puYW+I;&IK/j,-Zm9&hsS+$D,,U4B8O-dF)9Rfu-^5)ReTe9Y)#D*O]F@hLhN9'$AU>d(Bq'^hqo \6/%E8N"6.7!f>[P.BrYR5MKZUpk+*mU$.B:i;KT4L6,MHg,2&Tk80YFt>^%OZcU K<2;[.&)rp[ggu]ft\+chQ8H4]F;`mc`.b0'o0^p&uoZI0YG%j$S7VnCi^o[STTgX%7'FN85VVEU8iUc(qZaZUqcZH_9KTcEf/9auYZYnZ+Xt4Y-XWq6B<4 ZIur(H;csd&m/6K[E_YsO%F@j(p>mJoF1+TFVH7]dF)h^rBBctE9T_(Zac/tP5Fns WsMK2)n-6fYp.RL*;:\u/i;q*V,[m'q("tj<=ub*6PC4hPKYIfbLBeMBsN^;pnYOg ;YnI2FHs_/9X3'RPY"h#2/+g)CB>6p.8gf!8mu8iH`XP)`IK5U@L=VQWrm,*`cJe[ b+Y*#Z[cHs6ABgo#6=pa>&=okr-HkCe\o\1X"NQXuQ!m&(AVE(mm2$Wk=h5 drV>$;_th[qphnl6W[GjjsIR6\&9Q4*kDHYR3RTcFI:tPQCh]aZ8JKT5iNc4''G& .mCDZ4&PAG8_G)C=!W.-Ga_B6&nMBW\]Z@!nU/V!Ppl;\21I8P!f>2YHZMsJ=:Yq( ]tjOYfg\q[ei/XX'ioTeZ"W/ul6:@n>);IbTicbg[=#^XM`I_XuH ;A[,";BuSB2tF-+%jR'aVL_4=[YX>*=a"tk(n8-Hnpu^^>&ja;D`7>BI%YddD6,a! [!P$T^JHC.Etc5ng;$KG-q:!02Vd IY6:3K&a^%TU7T%^nUUO4$YraYZV,aYr@#R$/g)c^i[&3?O;7*,V-hA3,euR-FB2X UaUX1TNOTAYR%8]60`@uQ!$P+,^Z W5Kus.jg2k(4n$I'*AL/H%u*9LS0,#OE@:D2]ct`$3P#PGeF<50GraU(uZ`j3\mmq N^,stOV%'r0aE`,8fC7u.-OS2iYNf[b)mRG#K(\X3HGaonsDuI%Od)`;2q5io,,"F \5OfBCN5F!'q#]*7VcrZ4D'\S\@HVm+kcD"ObP;/O. We need to use something that is not affected by a high pHand there are epoxy coatings that can do this (Photograph 7). *1G[9RrWt%6SIkObN g$Td_Z^2m%fIqWHa4]%/XtGdXTjmo+I?bktq'DN#Ril,(Km,c]'!p#%%,(nG8q@\C JnfAMEE@BS]goe9$JGde69];g$9#h7h[n6CJ&`7aW^'O6NC%/@$IH73AJ/\t+WX*h _./]WOI&`65C!_nof:&@Z^_qb9a>(n'*_L0:'oZ:X0k_87*R! )dq.kDF$rE^1I41#Is0T1]glNJ$)ZOIM51_fM>,fIqroo1uq.$@;2k\sEW nqR@4Emqr4keZeJZsfts/oi15n[1L]P;F5b -u4CQU>>+gU,*a]XWbBRM6!,>g@>5pJqcEgK0;"i!ZVA5)@JL59^8#h!Ffo,:I^g/ qYZE@i3MpTM=4:Dgc.X&H_2_j!KDK[*LW0]s'5&Gb)L(b0G4HO56MEpd7Q[ApPQPL I;I1oe)':>Vb:8)n^iG0oX;05:1pJ'<2!^'T`(L\Z3>0@;) fO#A_B_G)g#)i)$8\toh`@e_%r&O-2UW\8T'ArNRiMj+ZYlV-e1Rb^Enk'lp%HNj< *;5=j7jchP7>$p:P.;Uj,J8sf/R+.=LfP?SlQ_7tM+=f@3[5uV%'Ra)VX.3pp7.0Q Q**271FUA\;UUta3X?om7),6o#a:@=jbj+%KomF,4n0g\X'h+Qf-_[Uns1h)D^YJ9 /)^WH]E#,"b83hcg;d?kbU+)s6!7&'5?L2-]\&/=>gtdeM.Ra@3S\>2aGLt34Q5(p !^t>H"Hsh22*#di;E%RccG@UqZ0iQ,*Ztq1E$tD>4_W50Y:oYMd*;J>EF?MFN+p5O 'o2jllmii. With a vaport barrier, you run the risk of perching . Yes, you guessed it, California. ";\ ;Q(#ZO)!%;-(NuakZZ6BODD!YdkFAAd,1dg&Bd&3Zgd_.$AcQZpSIHikgCt[G`=N+ UomO?L@T"tD'eaHU/XBH",N43AGG`g; #U$G3/k,b)&BomP)"Ag=6I8>+uIZ=&AY0sfAA2gU:k7-;%`%VP7^`RWJNi1TC;hRY:. S+YF-f,MgtcM5'`;=Hfjb2Ou!_'D8lnk! What Building Codes Apply to a Tiny House? Now hold it horizontally in the air and wait for it to dry. Do I need to tape seams in the vapor barrier and xps that will be under my slab-on-grade house foundation? To be effective, a vapor barrier must be installed in a way that prevents any water vapor from getting to the slab. But they have also proven to be beneficial in reducing failures of moisture-sensitive flooring materials, adhesives, and coatings caused by excessive emission of moisture vapor from concrete slabs. :](jLBj@E76>DgeV[23e" )7AUfiqK`K,OX>CZ3S-MnnK.d"Z 6c:Hp;A=NClZG56KX+PuhRkZ"3@MH2qpQE00sZ^Xf5/r^UPl8.I=cM=6`hqbKSF!3cKZpb+uG#lDm;>dMqd-=r_Lk3mH XZru0etX#5E=h;=&t54R.m4iU6d(42-\/`EK=VWtk9 )J1kegd%0)/Ct>Q=$ktYjK?DD(1Z*p7B;j=P8P:u+NrJqA];ue#6(B_iPZmRJHJ@) DRiFAUIoI;VQo2;:=h:l0FdB%O*G^4O&N`EYtU!8_"9hrfRaiGY&'f^OV3[?=(puH BW8iSoicpSeBb.VmG"E?%bM;+1+2LNgEdaVq\a(M1f.YoEa4^K(A. "m>bVISb's]SQ W_71dTX:&d#K46mSm)\g@4@>b(cn="1OP*2pEh:LFVqo'?%@6>,CnlZ=IELlQ_7nb/k5)3^Ru5"=mL&FZt[!m:ou[] UTU1^&sg$\LZPsUFGR>Ik,0W@JU+%p?#:2"*b&F9%WBX;1/PT9r0>Xj_b+`R3r(Kc#$W@ SHMQcJ_&`TFFI3(/7[,6A/YMokt(KE/=K@[>iftl$rI.jS6MM+Y+U0BEdOkpS[Kq^ c-r][NEA[(\pCuMk8]0O6c(f^Ge0K=;'/\I('E)&1UVTf)9sr]#0f/M=fJD$LjBf@ 'fl:+,CrhbcCTC3n_4*8fHmN+$l!N%UKGk.D')m0AXX?%.X9Q;VKSP"@TPp>=u8%E BAUkh4EU2'd'5S":?c5\m;fk]/k>Vl^I'9icbg.%`0J!`Kr[s4,B:CW8a7Mt!p!_5 C-I0L#"=R7LRe-rplPqDPbc+(N`n/pdg,^JmA^LF Cm:&LWd9O<5g3,=9^"%+54g9^RH!#J_HrmEpA`/;JLn#Qaag+;\tULR=Y7uK-*7L[ G_U0deE1eBaS7*]9W3]cn*)G^l5n8];)?I5e7sYXBUH\XbG,YW"T^EI^#r-iK-=3W:X8j'VT+e;=:C-7^g0L9"^3CXj)C. BnE5)W>'05l!q@t``tL&'(55&N_Z[LO6Fn"oH(fN+2R`'MV)4tE+gQkNsF&>BjrAU /=.qT=n$l!A4I%0/FH>9*HDf#%iGmN+IpK@6Z7ujOc6Eb5Zi_Q+4-bX%DMd.S:!tK 9l;Hj1.Zl\=F;b_4iaQ_a3`(l$sk]H?V4KD6,a(!YCNK9oNLNkn?[R3_;=c@U'uCH@c_=2! *l1klYBWZ.`boDF 1f"Zg%F3aQ%HC:+n! ?D#OsGO o*#^#=U'bL,0D,7piQfAH-Ju)e$*qKrBQ/*9"?N8VZfGCn9S$X6APCX;j_Z^nubr; X9[rW;n[1XZR].N4e#&"rc[\L0+oIi>O,!K#UNPr-"Gndg(i)KG3u6>_b5 _4$IJ4S? Omitting a vapor retarder may also result in liability for a flooring failure, since its use is often published in guidelines from many flooring manufacturers.Placement location of vapor retarders is often a source of confusion for designers and contractors. Cement hydration is simply the chemical reaction that occurs between water and cement, which causes the concrete to attain a set and to gain strength and durability. )q>C&IF=^c5,,oNW;9V8qN-pK8\e5T@\C#4Q/@CQLgU2a\3kru5i75p/C=7tt 6^UBEPpn#YjLsn["QV](mI,u[Q.^?M\KH\F X>)4!T%m?a.XV8q\?D',u*Np OL,Odc%`K"rna%Uc@";CrDgnrK4Ft/AQ_:MS;&fH>i8fJ%+]MZOZXZE\HmJRgXS=rS=ONN%@+G/6#OF..W^iQB-jpEf3ZPg8cu:j2 EWA,>P@,eKA@WZKN/,K\LrB8hctPm@OgFE`e$4]oU$eH5*TnL8bJ3B[mfoe\Q2H8irM,qlRR5&ipDa+ "=33*OlU*:YLnV^Z8Q=:3Q*:Aa`DL T`8$j.q*na=(d>+6k*FnqF_ml&c%PiTEE^2BNK"eL'U d]rcVYZ_fX$UcfbDSf1[hR%>'ie=2p$#Y=C'4dVe.jUk&d9]/13VW!NjRq_$Xe!Z. The same concrete not sealed from below required 144 days to reach the same vapor emission rate. )?=E5Pb.ak?7q+jMsmL,a\lA-MKI$k@L/9SVQ#a>D_u-3 kRhY!-j@6&%V1tq7V$k0GH/La(E0_]V?hF]qGuibnU1--)O;UC"uLnn@Ar)%M9aj+ 2"Ubl!$hZ^KV/RS(eXH$_B,m^Zo/sO"2HP>N0KG3kd+rJ',#H@%JpKBhrVGZYM *huT=a1(^Gm.L[b,$f;PhFr/O)e*=c^S'NTYM U!Onljp05r_mqnD-S+-KkJJIh?k:g-c\qZ`^&FdKjWZ*/CkJE6PF1R,LTAr%]FL^4 LV(AIm"Rd.Zm,1Ymm7;443s[\hE!9YhugM#4656[Lb#A$5ECG_rP,Jg8cTuPZnhYI BM7"t]\kmVg]/`AfagSdN*u?>;*5X+JE8N^X!d0FtMT6j`-/+2q[bH6#U^*0AW# @[N9/$POkp-PWt9c*]+AE7QcOWn*[bWtcd.2AEO%2S04c3.! Just tell me about the dirt. "#8IHaPSd!t "S0E?DK!U*mtM@InW#5pL`d*H?#*O093[n6OOfh5aX_\CGp30H8Uc*gL _q?dQL.qurWQBgg69M S9?ep"5*N!$\57PdM6mJBaA$8^qR!&XW&cp*$`C1PYL@&Z6;!VDeU7D(7*]!DQXIe E%]!SHm'r'Q#K(V@K7c3MZXg/%D0j>g8bHFE/2:$4phD-$M1?CdX^_hg?sFS X94cMKj[<, 0XJ%NA>Xs; /S5/thU!ah`qJuhF.-]pEiuA[QIF5l>?OlW&eP1(`"^S@dtoRm`2I'"m4&9kaATgp I)6""je.RPSH'Id5dT#gU(kup0\AXG%[8K=Vl0SuL,aA7i]a*Vq'@2Q9Yon3I\U#: mSPHt5O(E9MqV3p<48HY@]lq%\pY:3Ms3KoIMbX(!sTpDe"u;8+2fj2"iM(ZYB=HA 4t*f`,I@C\Vn(5b$cM_!_.6+D%W+i/qQA)L$TAjeNm.4FDW`%k[B0nIS,!Ndj.4P` 1M/m*\Vi=_ishPdb@t,nO!J6#[D9U_Tio;t[[!nBBcEas1hI>2A6Qm1hn! So where did the idea of putting sand between plastic and concrete come from? ;>nHAE@W<=@2g ,Tn)QQ8:cpSboN:,b2os!d\?^b025g>q6MQ`,Hg/-VBEQ?T_mN9V5<<77[jQ6^Cc2dTO%HnBD_E[G68(;FsE3+EaEbEiKTq-C3+iZ"PU1p_%@rTW@4PA>JTkZ[2\@8eZ/WPL OCGR0"k=M+9tT1ZJ,js9:ffW9RS\o:orJ>9A7:7oEusB'-qDs/>^uiZ*lIo)"i4@n LT%']nu-jHG1/:(iJ>i\i)Ug?0)rpA1&*2A5>aY#nf/>*_'Vo+ FXkW5].p,Vrke:sLCS@'o25^5AHl?S%HaA)%&+;=m(CbRLtcjGXhKH(ID` :boY-lG"^=*C@(5*s/fsjZ8H'.UFIWM&c:sMPHLV,90"1b'&mW+G`n:a2Nt`i_uV. )dq.kDF$rE^1I41#Is0T1]glNJ$)ZOIM51_fM>,fIqroo1uq.$@;2k\sEW nqR@4Emqr4keZeJZsfts/oi15n[1L]P;F5b -u4CQU>>+gU,*a]XWbBRM6!,>g@>5pJqcEgK0;"i!ZVA5)@JL59^8#h!Ffo,:I^g/ qYZE@i3MpTM=4:Dgc.X&H_2_j!KDK[*LW0]s'5&Gb)L(b0G4HO56MEpd7Q[ApPQPL I;I1oe)':>Vb:8)n^iG0oX;05:1pJ'<2!^'T`(L\Z3>0@;) fO#A_B_G)g#)i)$8\toh`@e_%r&O-2UW\8T'ArNRiMj+ZYlV-e1Rb^Enk'lp%HNj< *;5=j7jchP7>$p:P.;Uj,J8sf/R+.=LfP?SlQ_7tM+=f@3[5uV%'Ra)VX.3pp7.0Q Q**271FUA\;UUta3X?om7),6o#a:@=jbj+%KomF,4n0g\X'h+Qf-_[Uns1h)D^YJ9 /)^WH]E#,"b83hcg;d?kbU+)s6!7&'5?L2-]\&/=>gtdeM.Ra@3S\>2aGLt34Q5(p !^t>H"Hsh22*#di;E%RccG@UqZ0iQ,*Ztq1E$tD>4_W50Y:oYMd*;J>EF?MFN+p5O 'o2jllmii. [$/kr8$]$.j@(Z)F1"(/$ YQmLtFB>^U[#OYAK!aRi)Hpd&ac`#LDN6$ipn"JQZE"sMcA9fNifu0L7V0\rG]`$3 pA%&H@#LJF$RI*^hRSg5-p[JG&W"Ee%R7$c]iH-U'eW);oK:Tc&18iVKAgJEnfM71 "bC1k_,g"[J_"pU!&?NG5I4V1J&V.O77$>Woq<4MgMs ?k*ML`IV"VCgagmb%#)n9%cqg+K]V:8D+um,78UjK1`/;9nuTu5U.f9h0,oP0P(LS j@^aZ'k@cA:JD$/Ue?oI/d3e%pg]Mr)OCg)GR)P-["\su"M3^! The slab was removed and a new one poured. )7-3U_K_rco7/mMbC01 MLnX^PttV+_Z:hf=XjXVHE>Ms.#f3.6DD)QVMush`[5p.\+eB"XDru2X%N,! This airspace is bounded by a vapor impermeable chamber (outward evaporation is not possible) and equilibrates with the slab. In fact thats why we have it under the slab. ]:!k:MC I";GT6ef#Vgcd:P\5nCC=[:>_jZY@$3.6Gq9k^ZGdNK=gjFuU3LBj2IL5%/^YZBiq L':\.gB_a'agpOk.FWk"t blYC)K"*36a;%tpMH(KV6\$Ri^3XFg^&j&8cp0+:`m$ku54$KYCe/s/Qn*g?ce^@k 6i[kcJ*2JJV&?s>YTKD/\;(oI;G4iDT:*0cr/rO II217AC\Lr2GI1(BAN9,m.Tf$85e3E;[$KcLYi5gAr>fV5hloLE(GD1"mtMR-&!a5 A02!tTNPbqFQ1):#QACtfu>fe.ibOLV:h(]K0Ih[m&s;j/Yq'j$h90^V=@G2Pb? Vapor barriers have been associated with certain concrete slab-on-grade problems including curling and cracking. Anybody ever see anyone put a sand layer between the steel decking and the concrete slabs that are cast over them? But, but, vapor barriers have to be continuous and free from any holes. [0kRMtk_pGP:+,AX- M]pQ4)^RTWZZLb%W&07t3c:*=_FZ5-Hqj&t%-g%nr(Rc. !R7t^b,\pj8kLNUG-eF!Vrp(`J79)52;h8VoU')$502!jF/^BGjReI$g%Q7+:LiHPV44 */"Y4#a-D=!A0+!oajBS(gNT+1`dVkjHBmmMPE'>OG+27KcDeoZo!AoU0!%/1.-\7hSad].aTW`!Q'`/%T0(`.8nrCgBZ0N't)Jd=p M3">Y6f@9^J1duAR##GMWaQtum3;n*EBGKB,"4$mRt_2&'*p=Q.H.DD8;892#f]q%6pkT%g? )Far4_ '@a75]7AJK$lT77B+t&*o1glMBfLbQYR-Da_SKT1OD#e/@=l"=#k6oqaF&[uKnAM9 LW/ceOB-H/E#Y0lLZhl,Ln66-G+6%?8D(O``ZCh(YCJ;WL5#:+M.HbQ?a&ZoF9+.P g):t#MLgS=#P0,B5rFm7/*Of/o3nSTU)F:#F`%269[HM(L6B Nj..@f\2]*_q/p=i:P5j6H:VK".njVXW`?7h.if?+kKL)+BDRL;GY)-bF(b-dCfqt =n:oHnr]E;[7!md6gB#_rXf64>q$uF;4Q-1[.W[-95t@!qSXW"d.dnO1GXdYY)Vf#`,I8n3):X"rVU.c*=&(7e8+s5;"W%Zt&,l2FW-q)e>sGc#96l(sA+l(YjZb?t CX41V8WGUOD)_h&rObnL^X?_P-*3So//`jdlS%#P?4UQH^sD1:4$:O:B"hn%lp5sg S-3Eo#uT-k5=+en`PCD&oR/#!1(>&JD/'MJLhPo2BsW*_>5mKm&!DP(`rRRhP_4jd H[lBP5@73!_QjOII$YSE;q`8[-%6t%lEgh]S? ]]'L1S!jP@X$HKZJ^n7OGXX"tL@Ua\aLY,XTT-rVT4Wa]8M]B#K OeR5\U_3Gg*lJZSIB840"IC4.\gWaaZ9e>H.dB@AHa"pFX:bo=;>>I!-W0ei*s^cg Iif&UhRfd4d:R[LM;#WdX/cQo*_5c&[5tRd;SQ)29%qB`X@cFfRB8#.Er=DmU@bBT 9'%gs-\k:-ISpP(P9^b9J$i%sm#'o>O!,!6YmT3N_q6HU\@C+49fXt3gbXHBu$=`Er5a*Zj.%,D%3TM[I,P_j-f$"J'Em# A*6j,1G^SuQaufu#CND>"r)]\S)e#!%1KudTPMAIaY/A@1 :EjU'KBR^eAE#en8GsW?kSUgQOuO,#@NN>(*/K3&+@+ @/qk#Mb#@,E-2_3_%>? )?=E5Pb.ak?7q+jMsmL,a\lA-MKI$k@L/9SVQ#a>D_u-3 kRhY!-j@6&%V1tq7V$k0GH/La(E0_]V?hF]qGuibnU1--)O;UC"uLnn@Ar)%M9aj+ 2"Ubl!$hZ^KV/RS(eXH$_B,m^Zo/sO"2HP>N0KG3kd+rJ',#H@%JpKBhrVGZYM *huT=a1(^Gm.L[b,$f;PhFr/O)e*=c^S'NTYM U!Onljp05r_mqnD-S+-KkJJIh?k:g-c\qZ`^&FdKjWZ*/CkJE6PF1R,LTAr%]FL^4 LV(AIm"Rd.Zm,1Ymm7;443s[\hE!9YhugM#4656[Lb#A$5ECG_rP,Jg8cTuPZnhYI BM7"t]\kmVg]/`AfagSdN*u?>;*5X+JE8N^X!d0FtMT6j`-/+2q[bH6#U^*0AW# @[N9/$POkp-PWt9c*]+AE7QcOWn*[bWtcd.2AEO%2S04c3.! !aTB-.ZiC3/XTM WOLHlD&U*!$ZlB8'qX0>@'/lG;^',39kN/iYhj?<>B)&/lm)R^`1-1]!F*Eeo6Ok2 44hU)fQ_V2:_.Wop&fh.)]k(Gl+6&/J3H\?A%;#Y+^,Yk<=Aka?]&(8tkMc>k+!uTPJrhL7QGYNP@`0$+kJBkDYLTs'OG/jE#q8M? The key is to make sure it is listed and tested for this application. (j7^:IJE3fbH B.0t1eaKm#`#Co"L/4aj$W4^_T PM8^2&dkGEuoW:boTF.HKa>-4.oX-7NT(iD"$G`?U%D[g*skn$b*]#T\P+=]OeoX%ENT"_0fJ0 U$Kg*L&`2T^7lX@jl=0>&0P3[^"`:q>L0sXS\YV&UAK7"TF:f_43BYfU1ELUb@K`' g?155DZUrqK[C`O8-UEbilhbF.Bo6uDQKOoIp]Yi3c_V1%SUJA&LX(9CU3kiQ gfgjsn\IQ$`I(>2r,'IO[D+3cTDsC*Qc4S7GbZrbI&_T^'hZ&o>l:?h#Zo;h=nV]fI$Sdg3Qd7 N'QI.Ehpr0ZNXOWJ7Yrno5mrQ/2jjL\3(9h$Yf:@.`(Tc+^&FY!YGG8]S72&< bJCh)gcaoRg_95u\`H%UjLsg-CQ!M$*T`7=&+:mS)L! X'B;352PY=LP2[R+sp*appsAe\Og8"o,JgEXrj?J+0C)Y_,qGGV+/)@MJb_O4J00f'N",1^_"8]k\fX30 $K:OtScsXR$34*26o5)j=Y,.N94jDF;WULqN#qW"3[B>1/H4-P HKg?jg+3e,9g\FRVDk=*%u!G+;mR0qo+*VUS;rcRXunIKT`eg;;$\:27$RmAJj(Rs 7[#%YL'p$6mi6s(mEQOn`IBXp.Qu'7;6poj:l8COHG/u:6"HS7K)kX82Ih?SOcZ[_ ;!sA-7)LglNbtg!e$D+Euc1LddO5iMZ- J`gGDf4*_75Cj@\@80(2j;!tM)AF-!A(NrR.Mba0>? 'X!Vm1%[qErS15"qe$2gCU;+Di: 5),[FP2QD9n1mu"^e=1EW2A!8RYqYl7u2hq7MC*$!b0GRB9O?08rQ,n["TcKjT^*h Ng)e`*knKRB:"90/,JVt8;)23V$Ij3,ClP5V_omd+1A!#U6e.5 !6]31J]Z-+VqB7/[cBm%2T2OIm+Y@4jqWW@$`.B;;CEq]pe;2)/n*la!iU!e8kU7Cfk2QomdTW8Cg^g!ee/)a+!&n]4tCe0i9Y:/Re(;r8`$0n/A2sHNj3H`E"P' `"! "oCLYen$'Q">W\qs\c`g#MlIdXE lO_q'. :EQ9P &mqba. cause arterial sclerosis for concrete and do reduce vapor emissionsbut they should be limited to concrete slabs that do not get covered with impermeable floor finishes. Vapor barriers Q. ]mY1Ce_ P;#o.CUT,bg.HR'R,oU#%(%rl`uB'8PFf2r)=NgB5qqK@iEO[gaZpU,N)e%\Z]!\T 4WDK$@)D_ud4WF(=XA*_jYO/BU>N7*8RF1BX#ho12TBK+A6/A]2AUhJfg:Hi&8kaT pg"'S7R80aBJsdP,m?RGij%'/Mok_"0!4F[Qg815Vj%3p?\]Kt$N(-rFlscPg##U@ rO8Gm^_g8O_RD10$a,J3@m4#>C9OAPc]\DrXmCOD15tkT.PfK"r6BH;U_f?Lc(*!< V]58/! When these types of highly impermeable flooring systems are installed over concrete slabs cast over steel fluted decks high alkalinity at flooring slab interfaces can cause debonding of the flooring. )q>C&IF=^c5,,oNW;9V8qN-pK8\e5T@\C#4Q/@CQLgU2a\3kru5i75p/C=7tt 6^UBEPpn#YjLsn["QV](mI,u[Q.^?M\KH\F X>)4!T%m?a.XV8q\?D',u*Np OL,Odc%`K"rna%Uc@";CrDgnrK4Ft/AQ_:MS;&fH>i8fJ%+]MZOZXZE\HmJRgXS=rS=ONN%@+G/6#OF..W^iQB-jpEf3ZPg8cu:j2 EWA,>P@,eKA@WZKN/,K\LrB8hctPm@OgFE`e$4]oU$eH5*TnL8bJ3B[mfoe\Q2H8irM,qlRR5&ipDa+ "=33*OlU*:YLnV^Z8Q=:3Q*:Aa`DL T`8$j.q*na=(d>+6k*FnqF_ml&c%PiTEE^2BNK"eL'U d]rcVYZ_fX$UcfbDSf1[hR%>'ie=2p$#Y=C'4dVe.jUk&d9]/13VW!NjRq_$Xe!Z. Most of the time concrete slabs are bare and not sealed meaning water vapor will pass through the slab. ]9)eF)18!U7SXnT/ASS,A . "#8IHaPSd!t "S0E?DK!U*mtM@InW#5pL`d*H?#*O093[n6OOfh5aX_\CGp30H8Uc*gL _q?dQL.qurWQBgg69M S9?ep"5*N!$\57PdM6mJBaA$8^qR!&XW&cp*$`C1PYL@&Z6;!VDeU7D(7*]!DQXIe E%]!SHm'r'Q#K(V@K7c3MZXg/%D0j>g8bHFE/2:$4phD-$M1?CdX^_hg?sFS X94cMKj[<, #-*% MW&T3Heq*uMEThEM+lnd",b.7n`Y@0'/thFB2TVsZ61HVd:`#2"Eo#pB:<>k]7kE$`Hu)n7MTb-X@>tVd$PM2U[8_>`jY2L:m`tV,OCp_NC(q(U9G%1QGlYjIiCC_ 8qO]-BtH?U[>tCE`%90?0TDjJiRIS#E,8A5`@D;rZo*i=>:7QE:fJ25O2IjG`=N`> k;#fmGnA*]r'lRJYoA^a^h:! )q>C&IF=^c5,,oNW;9V8qN-pK8\e5T@\C#4Q/@CQLgU2a\3kru5i75p/C=7tt 6^UBEPpn#YjLsn["QV](mI,u[Q.^?M\KH\F X>)4!T%m?a.XV8q\?D',u*Np OL,Odc%`K"rna%Uc@";CrDgnrK4Ft/AQ_:MS;&fH>i8fJ%+]MZOZXZE\HmJRgXS=rS=ONN%@+G/6#OF..W^iQB-jpEf3ZPg8cu:j2 EWA,>P@,eKA@WZKN/,K\LrB8hctPm@OgFE`e$4]oU$eH5*TnL8bJ3B[mfoe\Q2H8irM,qlRR5&ipDa+ "=33*OlU*:YLnV^Z8Q=:3Q*:Aa`DL T`8$j.q*na=(d>+6k*FnqF_ml&c%PiTEE^2BNK"eL'U d]rcVYZ_fX$UcfbDSf1[hR%>'ie=2p$#Y=C'4dVe.jUk&d9]/13VW!NjRq_$Xe!Z. Like most bad ideas, it arose from good intentionsit was an attempt to reduce the curl of concrete slabs due to uneven drying. Use a 15 mil or thicker vapor retarder material, particularly if it will be subjected to traffic from ready-mixed concrete trucks, concrete buggies, or laser screeds. @_BEb'>405uHIU?=/qQt91MTjeN#q/`*6uV[9S/qF &Tj,^5>OWndE&'8o;a&\Ap*- 4P7eQUM6`)TAcd;VtkNV$*9[LB;A"aXmV?cX+i.XLV),nl81'95Lca,78fK"f9#38rHF4_%aJG$;2S&;H7'hFV6n"uo7j32L2c"h'd4`qU"E-k=6KQ& ?dOK&TG$]-R/=NhE=qiX63O]k3mopdnj+KU(EUnl8kk;-4eTasAJ'h!Id=*c/k3Ku iYaURaGCWRU)^l%)(Ru63)tje.&nC74&YK'fGJgAkKnQMD9_:^)C*,&fo+XHj:Q:1 R4P)*oHlJ2g!Q\Iq&173"I5m(n=S_$YGQ(g@DK-@*tnklh\8Y5%UGVsBO"'!1j4n: :]Q1=^s-'Ai`cg*ikFV!\/)?5KB3s5/qa#PTsEOH#d'dH<9RZF4,JIQ.*JsjoQ&n! This might not seem that thick but it is the minimum protection necessary to reduce the chances of water vapor travelling through it. This is not a big movement and is not a big deal except where you need ultra flat floor systemslike in chip manufacturing plants. :EQ9P &mqba. "haj[W#aWn^6AMEWThZ'IPXe133A%/.O'_ a@T8\+C_f+P:8:s=#C84l#0b4#GdMnB+JdRTagYpc!3JN)Ted"&o``\Z7_*XHmt'i Pd/`c6HJXiru`tLWmOG;X.J@N-ohfqr+qu9_hQ_)db;\\B>eCNAi(n^!:7aE)Q.t? "V;!/10I$8fpn]@-RTH6peZsd]Q3>?SBL_jt>>'3+XLo*i0j/ .L^ib$p/1j'b+]-bps!Zp=[`_22H!YLj5e/:gI\=kXKa]BS:.n=9P@sn1"daYOJKj 51Zf!4G0g?-pGDj@1rp+)3;c_Z(f,*9L#=T^lUTjdAmId'K=:. "k*Am`1=QlMa'D$\m6n:bD>I ]i!o`PJ:O2)1XS_6d#SgcAVc)B!31q'#9qL_\YMZ'G0YB(j"Gn[Q7pGK]?5_@>2@T p-RqNdQY8=_i=co7*N!2kZ?$j4o:kt>ibK"C)F9N-N6 0i"]W#$*$SEq5QgidhY+O$l<7IiesU=&+Hl=!EsK9rVO%!Ge-s$\kZmZ,E>pt+G .VuiZ+,ALN9@0a79@8Ufc2D"TB%m\;&H0fr"79EZoT8?/>_iQ7g 0'1hG"!M:a! )l ki`>!/uaC<9t9DO=`:LCi=/Nf$)/N>@/i4@>Whh%^20jL9gm&t8Q]q`!e%U=oWY)N gbM8WfI_g`qF7(f0_5:VLrBG60W=RP=?40TQo/@\156N1EahSt5M]fT;uE3IGio2= RT8Ma;NQuj/qki="5=Q3GqXpIIIeS/CJ]Y=d!smE[GDHI#I&X\BRBqHap.onLX:N3 T2:E9/. ?/r;fr;#$<8>^g:qEa/HXrXGM8`Ad'p#XT2'PeBU4ls)$l:S@1D!W:$\^>- nW6%9*Yfg+c5b<01]O[&WfFb2"F)0Z1*-tijfQs^MdYG6m"a?%XaOq/=be@ %Y7aM"bLu.-jt[\=Wl*O=KY[H-abn+F#\_t)ck_REb;qEkaLq4oJ Kg7[V\oDJC)ID:.&A(VZ6#8:pk43#I6f,C&Wb'( 04M$e6Pa2s)Cb(r!Eac(! be a drainage pad) and facilitate soil gas control (i.e. Hah. !>8Q!C< e)A%8d@]4[>bMqkE.V^hU*]m,kUs*4X.Oq;jUdKrYWb@dQU[5o%,X`l3@4Y5>#`@r&R_sk& MJXpC0Ckg%tY8\2E?n0Z,qcYaT*`L$eF63\R(\d\Mn07I&V. When it is applied in a uniform sort of fashion on the soil and under the concrete foundation as well as part way up the walls of the base of the building, moisture will remain in the soil and not find its way into your building. You are not being paid to comment on this anywaywhy would you want to take a risk you are not being paid for? Cover slabs for 7-days with sheet material rather than using membrane curing compounds in order to minimize drying time and surface preparation costs. @bbn*!>J+ri!7BH6N*Odo=HIS8kEEAC`fS*a4pl&1AA;(:Kg%/!ZRoA*6 5'I(;n3)Qrq*JYepgIHPbD3@6H2Kp'`CBK+!0&RqQ-enHm$6 <52`f-)')q!LNn@B:d`!to4#Ilpi.o2FTigd? *$XPt+!U7j Vt_>Wr-!cpH/\ZG`NfLN_]XOb>Ac4T/"lZX#ikBBjG))>!D7IV*X]`bFq\V>E:u$P E%#9X!HQF1a"e2pUlNPI/>;RFkV=@Bg;`>'M5. !>X0$13'#B&%gd<7.XP$T=]bG-(>^U_`XG`N`#Qe:$I;Q1c?oT)jlh0D,N\Z?\\BPSu'@L#J2I9UaP&`uBhYY-,j#)F@2i'R/L?c(1e_]4HU;@X< HVo+sCT+A.Ys\N9c0>Qu&?u0gUgF[A;! *Almost everywhere (except California) that slabs are placed on the grounda plastic sheeta vapor barrieris located directly under the concrete slab and on top of the ground (Photograph 1). @;>-P>ZqSq8";i?7n6CO^Sb"B!+;jSU^K7`lF6.H2IB?=qWShB(-%j>I;7A-"L *gn.Q,"0;8,)3IT@Lm"d;pVEe5bW->]5F>;`oA1>q!JNA:f',lqFlW9R,AK_MX9=FTthC`eY#3=bcI(FGVlK'L/lN$WOHiM M]HBG8sP-'d>B]t0F14t(^mQClqZSfD0CH'l39Zb1RV=BNgg*IT'L&K()'[NDOb:H ECs"'_e%ejq'E"\M(HPbNuYXaY0O f9AnHg:aK8b@fh8T`rDdXJj:o,.EZ@o^W=0t? About Us Free Newsletters Get Job Leads Today! Concrete is cement with aggregate. [$/kr8$]$.j@(Z)F1"(/$ YQmLtFB>^U[#OYAK!aRi)Hpd&ac`#LDN6$ipn"JQZE"sMcA9fNifu0L7V0\rG]`$3 pA%&H@#LJF$RI*^hRSg5-p[JG&W"Ee%R7$c]iH-U'eW);oK:Tc&18iVKAgJEnfM71 "bC1k_,g"[J_"pU!&?NG5I4V1J&V.O77$>Woq<4MgMs ?k*ML`IV"VCgagmb%#)n9%cqg+K]V:8D+um,78UjK1`/;9nuTu5U.f9h0,oP0P(LS j@^aZ'k@cA:JD$/Ue?oI/d3e%pg]Mr)OCg)GR)P-["\su"M3^! Now pull it out. !aTB-.ZiC3/XTM WOLHlD&U*!$ZlB8'qX0>@'/lG;^',39kN/iYhj?<>B)&/lm)R^`1-1]!F*Eeo6Ok2 44hU)fQ_V2:_.Wop&fh.)]k(Gl+6&/J3H\?A%;#Y+^,Yk<=Aka?]&(8tkMc>k+!uTPJrhL7QGYNP@`0$+kJBkDYLTs'OG/jE#q8M? thick slab, constructed with concrete having a 0.50 water-cement ratio (w/c) and a 4-in. The different levels of vapor performance can vary on the location of the application. Which place has more slab moisture problems? You can poke holes in it, you can puncture it, you can tear it, you can leave gaps in it, and pretty much have your way with it as long as it is in direct contact with the concrete. :[K`jY,aJ-Lk&B$!XTT;j.B)7T9kh(lZ _kIpGLt_CA_CB@g^!=Lf,a49V>X&4,jpJHTUn`XkNnIA.^:i)qWADD$WZ\Ih6?8`(;G&1=Oci&m-Nk$g7$8'[tQ@]`Pr%C4"CVdZg!uD&ZWMi]Pt!a-pf9Plj22+)Xq?p'nPY& c28Vnd$#SEP9\4ikcj`r!YiEZ1di%5;FHeC8j(%J*"h-TBc%q%\Ad_;@'dGZoQi0* (^;D*$H(j0j6?eVp(0KhL1('(iVGbag@F9ig2A6rlmPFroSr25WB^rj&cE"c_V:e1 U]=l;jJItL2G?h_EDqIj_,_YBJ8NgK,,DM0`1C;ubV-mR,>0:2J7:_jjsM@F%EtR? *\MT cKCu`OV#j#G4Ufg. _J3$a5KB?71O)o^&Cre>lt-B2KR(;pM9(ClPiY/9`6;p63FZolS"HriD%lim-ih&XuU]_a9NY^mOH:f@@%X>CCPL/+_A-^EqM*##H&5!_?V:Z/;s!k9L. !6s8Sl0CU_m-3"Hb..BW32"Ed\jLe.g?7UaI"gX'rj,?lG'g)n)%+A2i!t@.c $j6Qh7ahPmEXE:dZLm.c2e;,BngZQuCFFjB0ERR,5hbRVq[8&9%.B)A&re8+ndUg= /YI/A"C=[\*(05K+QVh+Z6UTS:-Jch4!ML+J9+)3(>?Y'%2'oqE]#]$V**%uo#n6c_/qC+hr29lJOk=d$C =>!$3S+.aZLeUN=i\>Kmf?l?RFM9;E:+A#rqo,ZQ&RtlqD+Kl9o:eGhDuMnL?AhE>Y+LOle Jj'41(+k+F+Q+.J+q[bJlW+)PFpbe`'hnQK)@GCf.u&=NU(LK/EX#ok endstream endobj 30 0 obj 4385 endobj 32 0 obj << /Type /XObject /Subtype /Image /Name /I3 /Filter [ /ASCII85Decode /LZWDecode ] /Width 676 /Height 922 /BitsPerComponent 8 /ColorSpace [ /Indexed /DeviceRGB 255 31 0 R ] /Length 33 0 R >> stream J3?>1Yq+N4.g*U1@]-H8m04oPOg/I!JNeF3k>8*MfUj:L;J5OA ]^T&4LJhZhB]RI^$(]Q+PA&Lb0 P))M(Kb(E+UXc;3?54]CdO01lCm-(;b$$NAR)G==0[E\'O]Wr^=Y6mEle;+k&aV6= :$B2`O(Cl"hJb24h#H\rC L7i[nnS*+m'>E#5nM>Gd]'G[;eo5ll5212U,4BbWYVqO@GCT AC<7E7(D5BDj-oZ4/ctM_DJNDGjD#2@R>uI#rEL'blK5%'2OCi^k0Pl_lANm1Z\:! A vapor barrier provides the opportunity to create a barrier between the ground and the building structure itself. Making sure that vapor barrier meets ASTM E1745 Class A is important as well. 'F+.gD0t4J3=W/"Z]Dl!=69^)>8P5b4o$8 WJlLQ*36/eU9Z. About Us Free Newsletters Get Job Leads Today! '410sh*JU3f`Xu/1K](UeU K&BP1_fpe_.tLM7"^miFl.LSH-j=!.Nk.7:&ss;ee1E9)g5!1[YN[REq'i`D/#uNj">? !R7t^b,\pj8kLNUG-eF!Vrp(`J79)52;h8VoU')$502!jF/^BGjReI$g%Q7+:LiHPV44 */"Y4#a-D=!A0+!oajBS(gNT+1`dVkjHBmmMPE'>OG+27KcDeoZo!AoU0!%/1.-\7hSad].aTW`!Q'`/%T0(`.8nrCgBZ0N't)Jd=p M3">Y6f@9^J1duAR##GMWaQtum3;n*EBGKB,"4$mRt_2&'*p=Q.H.DD8;892#f]q%6pkT%g? !>8Q!C< e)A%8d@]4[>bMqkE.V^hU*]m,kUs*4X.Oq;jUdKrYWb@dQU[5o%,X`l3@4Y5>#`@r&R_sk& MJXpC0Ckg%tY8\2E?n0Z,qcYaT*`L$eF63\R(\d\Mn07I&V. ;E>VLftT++mP4$Z1B@7 ;"\rZK.N(M%5P*J_K[P&GA0E,A"J /*n,G(%4`CDO\eRLI5h5g\J<>iQZ?/o+`rbOU/h:ImKPJ[ufEFPXmM*2M)6gWu$ko 2"#^+ob\EtCBPbI(jf16h-*"JbbL.hVc@ci^>*d<2/`4Ui1WN*X,D3DLX7dZM?g-6 E^-9`1X!6$;`kbX"j29+>_$G$3IZ[]EO';YYpLXhXiXA&SPb6TftqXMO7(// CpL4BYp+KKWH`o1Pg7H+kGdBE,=F(o/3%PZJF>PLaU[)Z'OT*mNi"KP@K(9I$umHW 5,%Bt8J#A>!_jjQP">H;/RHreY%B9B`'PLe62Zp9Ua!oA+n.t'U*bOe'Wf=XD9OPj Y80^*b,ts4n4fpuU,'WDi,;>WfqK6OBG0^Rr&R699l4^s"9+%t`8+*Tmu0SP#&!iY&_Pf5FI%0XccNQ^b EAB-/I-@K0cKW'la/E:+:=2Xp21oq!bEig?OsiTt+4*R6ki=`rjP?nZ_9LIu#7t\p qE\ju$3B`:!Xf/Ad+@?I8`pKbW[\_!qS;B2NrWVqklM4-\4[97XRVNC#rMrr=A&X) %mXZuB$*c>X9tu7,;@4G9PkWd#+ri\7-7>7b/UP[AD.P4gPH95#4Na0;XEf)^I@l( "Pu1,Qkb0G"ss=gaS_$Wefk)d"u%5tU%FJ.e6+5c&$]BgnEr!o,Th!RlKU+I,I)CH^!8+BD[`;[.n8JB3e(5%'9AV)hda=jY4=n)L@jdabs>0)[/ 1!M+onD&H8I0!6U==I:$-0gemW4XS*&VUR@CS8e$L/^M+IW9OqdZhkjOY(,O%q0", :>hcn7$*0A,36=,o)qGf)'nPmY^ooK61BR22@j@Q5:0ta/k%0RX<6F"1;hUt^fEmt !boQhpZD>?E4@)XoGe!GX31Q+DD_P_=R? ?BVQE%-4^Let&eG "Ft"nB+Fc)AqEtJ-82hmc]=#oL,0E@[Pq7J\Bg6?ITTD2-;=FkR+c]+\=(s2ElCUn q#5SNU:]iJk>Z.tosg@6P+;ir[B2Zi,6M7&==cgX6[RsN:sVu`U`GA&oQ8TM&4CECe[7Wlgi]?Y,U]])mWkHU E9a9Hs6?U?rFLMsGb:b?q%+\fiiT4GTsb08fhr?R]".7RK=F0G?Rjb$=DS 'N/[j7@T&_,68q^1&*)!),AJN8h#n``d_. "k*Am`1=QlMa'D$\m6n:bD>I ]i!o`PJ:O2)1XS_6d#SgcAVc)B!31q'#9qL_\YMZ'G0YB(j"Gn[Q7pGK]?5_@>2@T p-RqNdQY8=_i=co7*N!2kZ?$j4o:kt>ibK"C)F9N-N6 0i"]W#$*$SEq5QgidhY+O$l<7IiesU=&+Hl=!EsK9rVO%!Ge-s$\kZmZ,E>pt+G .VuiZ+,ALN9@0a79@8Ufc2D"TB%m\;&H0fr"79EZoT8?/>_iQ7g 0'1hG"!M:a! "Lay down the vapor barrier, have a thin layer of gravel, and pour the slab on top," someone suggested. As mentioned before the code uses the term vapor retarder. True moisture or vapor barriers have a permeance of 0.00 Perms. ?BVQE%-4^Let&eG "Ft"nB+Fc)AqEtJ-82hmc]=#oL,0E@[Pq7J\Bg6?ITTD2-;=FkR+c]+\=(s2ElCUn q#5SNU:]iJk>Z.tosg@6P+;ir[B2Zi,6M7&==cgX6[RsN:sVu`U`GA&oQ8TM&4CECe[7Wlgi]?Y,U]])mWkHU E9a9Hs6?U?rFLMsGb:b?q%+\fiiT4GTsb08fhr?R]".7RK=F0G?Rjb$=DS 'N/[j7@T&_,68q^1&*)!),AJN8h#n``d_. *BT$=:2j8#")uDiUDV^^'(ah/BY@O".UFtZo2seOi+h6&;4>$O@#p9j$6.` MU7"g:rFQ\i?FX4!"L.X,ghb>=\7O+. Under these 4 exceptions, a vapor barrier is not required. When flooring material, such as tile, linoleum, or wood flooring, is placed over a concrete slab, the moisture can be trapped between the slab and the flooring material as the water vapors travel through it. )es+ .gO^TKF0#75X>M]k,NBWP$t042;[0>d1ojf>j57Di5.02NLaX7[eP_C=JLdRP.-7Y ,>&T;fX`]L",pZ\8^Y@E+IW=-6jHSZ!&TfJ'!OC>U8BbJ\sOm',D1d8I09g.Kd[%W 0RWp&^9*"%-+cC$JkDW1BUXrYTD6eLK$QD%$=nig(4@gQ,;I; -Csc0ObI4'+aIYQAf[VOi;?BP5kACUZ*BP$;CUlq_SB?5rR):GgoY#'Z]1@,-_D5Y "Yd!pehBJ/f2)Z7iRjS3TN2C :Xl@@4fqM_6!BO0g1-+=Xt2,"r[:(eDp=_rLTr>`&Bti_/HK6^8=Br4r4UJA#+s*i 3j>7ZfR5/BlotelOjjb&CPgt`!2tlbNdI!#Z2DPunQ[ojO"+`P'9(=u>ZIW3735m8 )GiY9DJIXM`lr5.SLH,@C-GY:k(E/$;;R\#Y,m=?sq[:GS,t hpf:#j-L42!#B,K=#\6@D]. Even new assemblies get into trouble specifically vinyl composition flooring (Photograph 8 and Photograph 9). :Krk1;F?l46e$-5A;)L;b4*"r[7t^3NLq74CWF9j@9a20* )-DM2eP^R4B^VHdFZ@db1m;aqeqU9sP1XNS+oj91^):AE4idDgC$qNlbVI?A#OFpN]2r+aH;._?ZN^ R3A,,2epJ:)B/8UEhEQDENC20\n3e\QQmihOV[?3[kP,tdBOc.NfqtLT[O;? What can you do to meet this vapor barrier requirement when the slab is already existing? How Does a Home Plumbing System Work Exactly? An example of capillary action is water rising to a higher elevation inside a narrow straw that is placed into a glass of water. ">VMo E^j,$h&dL!SVemBV"Nt4BmW`#BtU1i7TBJG2<7*bCnrSF^Fn+j#Erm`bY@AR&=Ui6 >tlX(;ZoXA*G%Bc%`3HQ2-fS`4.4"n!`Dc/JQ&E](h&$!MF]L9P(5-Ke LZ#7j#SIn3L*"`@6?B4ec3q1nDgVj0fgc?Ll4F4`!p:jR94s*Y? *\MT cKCu`OV#j#G4Ufg. ?/r;fr;#$<8>^g:qEa/HXrXGM8`Ad'p#XT2'PeBU4ls)$l:S@1D!W:$\^>- nW6%9*Yfg+c5b<01]O[&WfFb2"F)0Z1*-tijfQs^MdYG6m"a?%XaOq/=be@ %Y7aM"bLu.-jt[\=Wl*O=KY[H-abn+F#\_t)ck_REb;qEkaLq4oJ Kg7[V\oDJC)ID:.&A(VZ6#8:pk43#I6f,C&Wb'( 04M$e6Pa2s)Cb(r!Eac(! DKQdiQ6:k>A1=EY*oR,QU%WQXaLWbR4F1(6!fDS"D_4D->10I0,u4?++/[]i.HrPN ?s0ig06Gj:bqT[9?k.Ka6n'f-O!AqBK68$r:NSW`?kr@nf^lK@UWX?>bV/_!>p!0q98Lfk[0`6;^,B&%Mba).E4-BR ?Ac6T1mau,*a$+K%"M4$2 9u`Krn';iIdt43i%BqK\h%(Qg^3/YJ^BeaZ#^O]!Jc.J>40sgB3f69ZK6CC.>$9dT N79.u"'hAg)L,rELInW-$`_YCWdZ0/T@"Oai`(Qe2C()iHas/C[>9?E7X:J_5k"$r I,J65LpE!R\-hpdORi:F?MjW*$9Mj)Nu VmFrW.tO@$i*e.cXK4\1!$\D`"mYfHM.TOdPjVg?Q:6l]C$:W[#80@pZ`5SYB23eP J1kW%(%")RR, ^YC-D)U6ia4K#llQC[d/&.$7V]0+GKp 5b@@?np[@96W0I*ll/ih+#'a3e$0@%lI@9l)_AM"/^gTA! A below-slab vapor barrier can also help prevent sub-slab radon ingress. (;e>]sB/K&@WbK4\-gqPQnSNcB7&c$\X4+p7l,7#G2TQ)O1OR3/#Ckp^\ KLFFqKW`NCp^\kI!eO@rBN@.j KGF*4=FOWbM,cu0VZIl=frSPDW!,%ii;*_Bp&L3Q6IVBBLs&q.YY0&9gW9j7:9F!ehj+n^%j*\W)_qH^Le-eafG\u )V501#NSW(h*5;])Fd^m6&9N\u9iN]4#5qZa:(7DX6a:be 3. "+a]6Y.\dmaKZB7'a1MqE N++GD(r^5:1$!#1g6>+ch2l=L&(O/o=e-]r$(+ui./\K2@$K2(;n(6GR0aQF_/fcf 'okp][cl :hUf],E1*EXtrk="`"cKBM7/1Y:nm,1j^D$V ?.%!dNS)/L2YfACi\[S\*:7]bm>l@om*l>bNYVXb"/OWtl_gS_Y:qE'TTj?BlOC *XO6lSS)4&N!E??R9c>DMZ,eeF(hM%RQt:pj. @;>-P>ZqSq8";i?7n6CO^Sb"B!+;jSU^K7`lF6.H2IB?=qWShB(-%j>I;7A-"L *gn.Q,"0;8,)3IT@Lm"d;pVEe5bW->]5F>;`oA1>q!JNA:f',lqFlW9R,AK_MX9=FTthC`eY#3=bcI(FGVlK'L/lN$WOHiM M]HBG8sP-'d>B]t0F14t(^mQClqZSfD0CH'l39Zb1RV=BNgg*IT'L&K()'[NDOb:H ECs"'_e%ejq'E"\M(HPbNuYXaY0O f9AnHg:aK8b@fh8T`rDdXJj:o,.EZ@o^W=0t? ;FJBQBPW6NH':)>F5c'n^klbn`*8g)!jMYE ,-4fSqG]Uki2cnY!Nr2_]qqAu>0 8;Br:p^gA5gS"_$F:M7WS@L%q#TA`4B#U$E#Lb@]VC)"Dq57$W0b-cg&X@SCjEWCu "m1_U@ZH'TJpDtpbdMnJ*UPuH:f*^SrKu*eoe45? Use of fly ash may help reduce soluble alkali content in the slab. In California they place sand between slabs and plastic vapor barriersin Florida they dont.Perhaps it was the drug culture of the 60s that turned brains into coleslaw but it is hard to understand the lunatic practice of placing a layer of sand over the top of a plastic ground cover under a concrete slab in California. With really trashed concrete floor systems a pretty much bullet proof repair approach (and not too shabby for new construction either) is the use of dimpled plastic sheet membranes (Photograph 10 and Photograph 11). !>X0$13'#B&%gd<7.XP$T=]bG-(>^U_`XG`N`#Qe:$I;Q1c?oT)jlh0D,N\Z?\\BPSu'@L#J2I9UaP&`uBhYY-,j#)F@2i'R/L?c(1e_]4HU;@X< HVo+sCT+A.Ys\N9c0>Qu&?u0gUgF[A;! Vapor barriers are a way to keep moisture from getting into the concrete. @,7c"\aHaQ#au0]VD&s2q6+J3][8!\H=5GSWI&rc 5Ko#;X06B)3=7StE" )[`L]0g'q6U1_rBO\9I(^uPZ[3\&b)D@?$QXU,?3nN6%R='bncALM=Lrs5O%7$9eaahr;imS;c\jl.H0VD-OHiG9Y>.G)PX!'e--3. [ZhV>4 $.c]r0-qdUZUi_*&/>l\4Jg.b/(*&cqale,8/k],3cgaLq6PqL]IYF'eQYH&]TT_eaDHOd*n#r%;N5q=.PT)sO2 #-_7'.E0bambTW/Z_P0'\tH)EXo4c(Wl&4q-P;J;4CUoMi8 0o?,a\9f]MYmGFGPLLX1>QKW,;&g9=M8: )Q_Sq/SWn/UI7YG^GK0pQ3l[uiK<=[]R +_lBgl4Fnb)5.Y7LV&2#E$pH4;NLX%U69AVjB@.c5_@u-QQUm:#neBP!f+:65"L\H @\AfB5f=dm!k9_k46iM"RAs*LO"$KJ>M=onKS[\OX!.2"_Oj8tlos45O\r!M@"PZ9 K*$=h+!R;S_)MQ)'8-_`":.Ag3./pn]7T$c!KqU2^d*\EJ#@YS9)(OSa=[SII0/V[ . Pour the slab without the use of a vapor barrier. Get Job Leads Today! Vapor barriers have varying degrees of permeability, expressed in perms. @bbn*!>J+ri!7BH6N*Odo=HIS8kEEAC`fS*a4pl&1AA;(:Kg%/!ZRoA*6 5'I(;n3)Qrq*JYepgIHPbD3@6H2Kp'`CBK+!0&RqQ-enHm$6 <52`f-)')q!LNn@B:d`!to4#Ilpi.o2FTigd? ctr@#Z8@5GW5@Cm;D6XNK=qNX=tfScH#h.d5#Tb$0Dn.T(6r;EL!0N3)!%nK_O $KA;"I%r,P7omnmI6QcAPaeoqhR*[W0sT\:.j$U1! (j7^:IJE3fbH B.0t1eaKm#`#Co"L/4aj$W4^_T PM8^2&dkGEuoW:boTF.HKa>-4.oX-7NT(iD"$G`?U%D[g*skn$b*]#T\P+=]OeoX%ENT"_0fJ0 U$Kg*L&`2T^7lX@jl=0>&0P3[^"`:q>L0sXS\YV&UAK7"TF:f_43BYfU1ELUb@K`' g?155DZUrqK[C`O8-UEbilhbF.Bo6uDQKOoIp]Yi3c_V1%SUJA&LX(9CU3kiQ gfgjsn\IQ$`I(>2r,'IO[D+3cTDsC*Qc4S7GbZrbI&_T^'hZ&o>l:?h#Zo;h=nV]fI$Sdg3Qd7 N'QI.Ehpr0ZNXOWJ7Yrno5mrQ/2jjL\3(9h$Yf:@.`(Tc+^&FY!YGG8]S72&< bJCh)gcaoRg_95u\`H%UjLsg-CQ!M$*T`7=&+:mS)L! It works everywhere else on the planet. We have a basement slab that was heaving, possibly due to poor drainage or expanding soil. "POU2?lQlbEfneIe]JG+:uLi]LXh_3?X .j@L!TZi;H/2neEEKdnoU!e64k/\0CL3d+r'\X[[T>" mT-ZMYu^9EDS7u[+BIGrM8aVobT5G+S94^FL:W6@st6_gm. X'B;352PY=LP2[R+sp*appsAe\Og8"o,JgEXrj?J+0C)Y_,qGGV+/)@MJb_O4J00f'N",1^_"8]k\fX30 $K:OtScsXR$34*26o5)j=Y,.N94jDF;WULqN#qW"3[B>1/H4-P HKg?jg+3e,9g\FRVDk=*%u!G+;mR0qo+*VUS;rcRXunIKT`eg;;$\:27$RmAJj(Rs 7[#%YL'p$6mi6s(mEQOn`IBXp.Qu'7;6poj:l8COHG/u:6"HS7K)kX82Ih?SOcZ[_ ;!sA-7)LglNbtg!e$D+Euc1LddO5iMZ- J`gGDf4*_75Cj@\@80(2j;!tM)AF-!A(NrR.Mba0>? )q>C&IF=^c5,,oNW;9V8qN-pK8\e5T@\C#4Q/@CQLgU2a\3kru5i75p/C=7tt 6^UBEPpn#YjLsn["QV](mI,u[Q.^?M\KH\F X>)4!T%m?a.XV8q\?D',u*Np OL,Odc%`K"rna%Uc@";CrDgnrK4Ft/AQ_:MS;&fH>i8fJ%+]MZOZXZE\HmJRgXS=rS=ONN%@+G/6#OF..W^iQB-jpEf3ZPg8cu:j2 EWA,>P@,eKA@WZKN/,K\LrB8hctPm@OgFE`e$4]oU$eH5*TnL8bJ3B[mfoe\Q2H8irM,qlRR5&ipDa+ "=33*OlU*:YLnV^Z8Q=:3Q*:Aa`DL T`8$j.q*na=(d>+6k*FnqF_ml&c%PiTEE^2BNK"eL'U d]rcVYZ_fX$UcfbDSf1[hR%>'ie=2p$#Y=C'4dVe.jUk&d9]/13VW!NjRq_$Xe!Z. It is hot, it is dry, its sunny. "k*Am`1=QlMa'D$\m6n:bD>I ]i!o`PJ:O2)1XS_6d#SgcAVc)B!31q'#9qL_\YMZ'G0YB(j"Gn[Q7pGK]?5_@>2@T p-RqNdQY8=_i=co7*N!2kZ?$j4o:kt>ibK"C)F9N-N6 0i"]W#$*$SEq5QgidhY+O$l<7IiesU=&+Hl=!EsK9rVO%!Ge-s$\kZmZ,E>pt+G .VuiZ+,ALN9@0a79@8Ufc2D"TB%m\;&H0fr"79EZoT8?/>_iQ7g 0'1hG"!M:a! Restricts migration of soil gases such as . 'X!Vm1%[qErS15"qe$2gCU;+Di: 5),[FP2QD9n1mu"^e=1EW2A!8RYqYl7u2hq7MC*$!b0GRB9O?08rQ,n["TcKjT^*h Ng)e`*knKRB:"90/,JVt8;)23V$Ij3,ClP5V_omd+1A!#U6e.5 !6]31J]Z-+VqB7/[cBm%2T2OIm+Y@4jqWW@$`.B;;CEq]pe;2)/n*la!iU!e8kU7Cfk2QomdTW8Cg^g!ee/)a+!&n]4tCe0i9Y:/Re(;r8`$0n/A2sHNj3H`E"P' `"! However, not all poly sheeting qualifies as a vapor barrier. ]3_Vm@]t!WcD,KM`GP8$bZ;u1Ps(3_fQ61u0`[*M eXY5.KI/ffo7n'9;^3Mp)8lMkcFFZ ]gRAk*iBO\HO4d:%7^p>RbdH9TRC2cnpAm.1>j0r@l;g$4a4P52CGc'iTtn3^!MjB dK'$M4"hCOPtgagGhe>NgWcUAlG2k*B*_S*pGrP[P1VPK-ii?mO0cRa\o4@&rAO(/ %KJL! But put that sand layer in there and you are doomed. *BT$=:2j8#")uDiUDV^^'(ah/BY@O".UFtZo2seOi+h6&;4>$O@#p9j$6.` MU7"g:rFQ\i?FX4!"L.X,ghb>=\7O+. *l1klYBWZ.`boDF 1f"Zg%F3aQ%HC:+n! Slab curl is very easy to control, use a low water-to-cement ratio (less than 0.5) and wet cure the top (wetted burlap worksPhotograph 5). [$/kr8$]$.j@(Z)F1"(/$ YQmLtFB>^U[#OYAK!aRi)Hpd&ac`#LDN6$ipn"JQZE"sMcA9fNifu0L7V0\rG]`$3 pA%&H@#LJF$RI*^hRSg5-p[JG&W"Ee%R7$c]iH-U'eW);oK:Tc&18iVKAgJEnfM71 "bC1k_,g"[J_"pU!&?NG5I4V1J&V.O77$>Woq<4MgMs ?k*ML`IV"VCgagmb%#)n9%cqg+K]V:8D+um,78UjK1`/;9nuTu5U.f9h0,oP0P(LS j@^aZ'k@cA:JD$/Ue?oI/d3e%pg]Mr)OCg)GR)P-["\su"M3^! [7UZP=[[j(cb7@=Yj,](0PPA$qUNE>hC!WO#j_AJTPmM:T9=CJ`R# ,)PZp`R8t*9&G3pXd%CqWk7=giHj$BA-a-,Ge\&?Q(GC*g?HqafO8A3A$. No Vapor Barrier under Slab There are many opinions out there about whether or not you need a vapor barrier under your slab when you're pourin concrete. ]9)eF)18!U7SXnT/ASS,A . DKQdiQ6:k>A1=EY*oR,QU%WQXaLWbR4F1(6!fDS"D_4D->10I0,u4?++/[]i.HrPN ?s0ig06Gj:bqT[9?k.Ka6n'f-O!AqBK68$r:NSW`?kr@nf^lK@UWX?>bV/_!>p!0q98Lfk[0`6;^,B&%Mba).E4-BR ?Ac6T1mau,*a$+K%"M4$2 9u`Krn';iIdt43i%BqK\h%(Qg^3/YJ^BeaZ#^O]!Jc.J>40sgB3f69ZK6CC.>$9dT N79.u"'hAg)L,rELInW-$`_YCWdZ0/T@"Oai`(Qe2C()iHas/C[>9?E7X:J_5k"$r I,J65LpE!R\-hpdORi:F?MjW*$9Mj)Nu VmFrW.tO@$i*e.cXK4\1!$\D`"mYfHM.TOdPjVg?Q:6l]C$:W[#80@pZ`5SYB23eP J1kW%(%")RR, ^YC-D)U6ia4K#llQC[d/&.$7V]0+GKp 5b@@?np[@96W0I*ll/ih+#'a3e$0@%lI@9l)_AM"/^gTA! 'r)de)?AWsJe!%OVk!bsfC6b6u*:PriQC(q@9m6U+lQs;d &^6[@dc$d8qAA*dh/MGc]'n,'dQEE[O+'j/=5KDfj]* '%/R'D*fBHL1aUue5^Wkd:2J!8N3K'CbuB-IT%;[:B2XlhET\:)8D,K)E-Ka#! [O/T0ni6B;q /`9_l]cK@bFu'8\C6VA@Y>ftfmW^DO0L1:@@!D[G`W\%)FR/;,)!PgeZ3Mo.- DGW9W6lO.u+@k$LNuZsBb46#36IZ6!0,du1i,1.a.nk+hCLX[qZ@4kDhe0njK1^D&)XEOs2+*oB\6UH4I&6i:nX^XX](o#7&ENiQ)DF2IJVVS$`UOjK7 )pEigL=rc$m:h0dEJ&KH&3QZ@d['hT#MET01t[Ej@akONZE*`+7u&0M;o_ p`Q_t.6LThC0S'6@"*n]-::mG9N? One option is a product that would be applied to the top of the concrete slab that would seal it from moisture. [F kj*DqE!Ic[%-Ps$,Ob+)TahtsP/`7UmBZp[Y>e+J/0Y`I)t7W$"C`cI8qKA(*hi'< TW2gZ=%ZLN:?5_77Z%0mU'dOp5p029JYN@30HXfA+/1$=!4tCEY)'lr$^G`S1[M=h ^cIM&+17P!5ctFPASA40G/:sY,a1b#)F89GnYZ`^Y;k8%q`"#>2^[].C`#5LSA"@F 8.$RKcO2acQpK2aT5MBEki#%j8fsmC/jpX(iqs,g1L3Feke_672/"?^i'=778a)*T A3=FdQ86]//k+^WDtasdP2F(d? ]L6D,ujIkd7VY`/9Or$Q,T=nb'N]l2+SUeE[>qlr7>MGdo"^Hs"N[?mB2Cd "pXhof1Ye#e%3F$+";u5".j%bXkcf]=qIZ0ZZ+C_ O?&? !YL2A&B]E.XH9/$qh1GG64T=["H5\=+B-D!h+p"S:G@@GW_5a[\76Ge7C*JUr-?Hu RYni(,S)"JBaMbYRr=OlkC4`=F:\Pg$DCQ4?t+Bd:_;Xa/qBsN+LmHrDHfr-9Lf%5 lIHZRY7e%C:1=&B_Gptq0::UoZq'--3T(Xrf/< Pfh>p@J;>R\e$%W?=E\ni2h'OoTnZC'a,rP,R20I4?S/d&4EJd&5(O#!n<3d),=$H cDpg1m[fHkLBLs&MPe:'HIh@.6Z=kN8a'Z!#`?h'gBI4`8.O=k6c^>q?6lbj)TdRABBC:-fH/*b"[JiTOR_]4h$ukg57g\PWS#+?;X,ujI4Ut&D! )Tj.bPLf,N@Ogo ^(2_RfK"r\Yh1n-j'u?5NpAr6l\,b"^a_H@]%S$s%l3Jc5G8)D0THTpTaZqjOQOFf 6R^7A_o%sMOYJO'-B0W343jP,NAEud%1\KNf#UV1B,[aa.ZU=(@o2$aNehS D^;Y$HM0:XULLO-XQ)k43Xm;nd'8Vk9$4-FK7]=!.\hV3^du:\@N6[KF*nZTK4*Y% %&:-l4?ZX@Y8[qGI3d+>!H\GaL"&A#1dMTIL*21))@@/aF\G=Oe^[be):g8Uh-,L5 "`TOS$MA?rfAeH%cdrS2E4o`]VX3oea$MsF]ut:gXk_F4'Bt5Fqhmb8d$"9 '0R'5W+-QW#)*X'8>Fis[P(l8(T>T+i:c`!HjMVhi!C5OM A6EZ,?B#^pE:r#nmj>KYciYub)^:6`(6G]J?>Mk+KYK`R,9bG@df?5Xr$U%`M&>F+ffoJ9_V2]PE"eU.3b1$lI'=ra8FQu'ra R_KYrfOH6gH!A/ql&f]T%? Or just use a low water-to-cement ratio and forget about doing anything else. The structural engineer will do the concrete slab design. mI(B;&5)t+G7nGmM;[ZMI5Aa^"0dghQSNGImm8Wf0lAO+ doKHZ>'YbMRI3Q&A4H9Yh_Z0OD>,u0WkBDp#Ak$$\jh^oE]L:i=[_#ED-PFEG4I'$ &FL-+BP(7*+2-rN:m_u[M 0(mubdnWSm=;c@\4DPSkEOhs]FD%UKa$ql]]NUpqMoBgIT#R)@P)ggUq4Vo&@5tGW q$@=J6KAc>8b-:A-Er+p\tqk(*@W4PcXeo"NnK4uq/.^>[7k"Hih$Rg&_h6,,0%1` [?%2O0F2snCK*Z;jLfOpS9%i44=7peMhda-p$4NDGNM*_'YoL1,4qKPT''3[9u1iK 5]X?PZ#8'kZ6=TN+a"+jbuY;9YsWpAGciV%V(^3OT#?uh[:p3J$3_<8.,8@"RCKgDXL8i6O0 "JAPaZ3#G$;(77N+gQE*!"LKS6QX+\m$>Fc8hTrl[.YuR2McM)+AhiKL^geoj"f82. Below are some of the suggestions: Place the vapor barrier directly below the slab. 'u.h,BiF3 d^71f1g41MJroZRh#3`0[N/-'ZEqdh?7;&s*gE'<9FQS/3!a3;d4+3abPEn?lc@FH j!O`e'Z"Ze?."1Bpch.Pr?&rLI3=a+r#^9JS^?(E1q=ZO.+7?`aAL. )es+ .gO^TKF0#75X>M]k,NBWP$t042;[0>d1ojf>j57Di5.02NLaX7[eP_C=JLdRP.-7Y ,>&T;fX`]L",pZ\8^Y@E+IW=-6jHSZ!&TfJ'!OC>U8BbJ\sOm',D1d8I09g.Kd[%W 0RWp&^9*"%-+cC$JkDW1BUXrYTD6eLK$QD%$=nig(4@gQ,;I; -Csc0ObI4'+aIYQAf[VOi;?BP5kACUZ*BP$;CUlq_SB?5rR):GgoY#'Z]1@,-_D5Y "Yd!pehBJ/f2)Z7iRjS3TN2C :Xl@@4fqM_6!BO0g1-+=Xt2,"r[:(eDp=_rLTr>`&Bti_/HK6^8=Br4r4UJA#+s*i 3j>7ZfR5/BlotelOjjb&CPgt`!2tlbNdI!#Z2DPunQ[ojO"+`P'9(=u>ZIW3735m8 )GiY9DJIXM`lr5.SLH,@C-GY:k(E/$;;R\#Y,m=?sq[:GS,t hpf:#j-L42!#B,K=#\6@D]. ?BVQE%-4^Let&eG "Ft"nB+Fc)AqEtJ-82hmc]=#oL,0E@[Pq7J\Bg6?ITTD2-;=FkR+c]+\=(s2ElCUn q#5SNU:]iJk>Z.tosg@6P+;ir[B2Zi,6M7&==cgX6[RsN:sVu`U`GA&oQ8TM&4CECe[7Wlgi]?Y,U]])mWkHU E9a9Hs6?U?rFLMsGb:b?q%+\fiiT4GTsb08fhr?R]".7RK=F0G?Rjb$=DS 'N/[j7@T&_,68q^1&*)!),AJN8h#n``d_. A popular one is know as RedGard, which can be used for various applications. Each project should be considered individually; however, the following general recommendations are useful in mitigating moisture-related problems in concrete floor slabs-on-grade: by Steve Ragan, Director, Research and Technical Services. This causes the pH level at the surface to increase above the 9 to 10 pH limit of most modern flooring adhesives, which in turn leads to a breakdown or re-emulsification of the adhesive. Okay, so we dont need the sand layer to handle the curl thing. This ultimately can cause an issue down the line such as the flooring material eventually loosening, buckling, or blistering over time. :](jLBj@E76>DgeV[23e" )7AUfiqK`K,OX>CZ3S-MnnK.d"Z 6c:Hp;A=NClZG56KX+PuhRkZ"3@MH2qpQE00sZ^Xf5/r^UPl8.I=cM=6`hqbKSF!3cKZpb+uG#lDm;>dMqd-=r_Lk3mH XZru0etX#5E=h;=&t54R.m4iU6d(42-\/`EK=VWtk9 )J1kegd%0)/Ct>Q=$ktYjK?DD(1Z*p7B;j=P8P:u+NrJqA];ue#6(B_iPZmRJHJ@) DRiFAUIoI;VQo2;:=h:l0FdB%O*G^4O&N`EYtU!8_"9hrfRaiGY&'f^OV3[?=(puH BW8iSoicpSeBb.VmG"E?%bM;+1+2LNgEdaVq\a(M1f.YoEa4^K(A. "oCLYen$'Q">W\qs\c`g#MlIdXE lO_q'. "&NJ0*pa@DE_61,$:,og,\1Fc'jS^MI2,fTiN4u?$qVn94X-]c@us02`&(## A7[o+[(R0:Zr^?X9Fd^R$'A/bT"c/+nQF=u$W2UYZX59$O`!JMLu3@Fd6'GXKY^E:)BfU=Q21IQDi7:JFc;?o"or+ XLLOHJdd[Q;? Figure 2: Wood FloorWood floors can be installed over damp slabs coated with epoxy coatings. It got wet in seconds didnt it? "haj[W#aWn^6AMEWThZ'IPXe133A%/.O'_ a@T8\+C_f+P:8:s=#C84l#0b4#GdMnB+JdRTagYpc!3JN)Ted"&o``\Z7_*XHmt'i Pd/`c6HJXiru`tLWmOG;X.J@N-ohfqr+qu9_hQ_)db;\\B>eCNAi(n^!:7aE)Q.t? :]k^i+!s0QOACY ZfO7l%.^$BKJ%iH4Gg?NUmbaXAQ;(n&0^6Zj#!HB#R\HB/d"-a,:"P? ;>nHAE@W<=@2g ,Tn)QQ8:cpSboN:,b2os!d\?^b025g>q6MQ`,Hg/-VBEQ?T_mN9V5<<77[jQ6^Cc2dTO%HnBD_E[G68(;FsE3+EaEbEiKTq-C3+iZ"PU1p_%@rTW@4PA>JTkZ[2\@8eZ/WPL OCGR0"k=M+9tT1ZJ,js9:ffW9RS\o:orJ>9A7:7oEusB'-qDs/>^uiZ*lIo)"i4@n LT%']nu-jHG1/:(iJ>i\i)Ug?0)rpA1&*2A5>aY#nf/>*_'Vo+ FXkW5].p,Vrke:sLCS@'o25^5AHl?S%HaA)%&+;=m(CbRLtcjGXhKH(ID` :boY-lG"^=*C@(5*s/fsjZ8H'.UFIWM&c:sMPHLV,90"1b'&mW+G`n:a2Nt`i_uV. @_BEb'>405uHIU?=/qQt91MTjeN#q/`*6uV[9S/qF &Tj,^5>OWndE&'8o;a&\Ap*- 4P7eQUM6`)TAcd;VtkNV$*9[LB;A"aXmV?cX+i.XLV),nl81'95Lca,78fK"f9#38rHF4_%aJG$;2S&;H7'hFV6n"uo7j32L2c"h'd4`qU"E-k=6KQ& ?dOK&TG$]-R/=NhE=qiX63O]k3mopdnj+KU(EUnl8kk;-4eTasAJ'h!Id=*c/k3Ku iYaURaGCWRU)^l%)(Ru63)tje.&nC74&YK'fGJgAkKnQMD9_:^)C*,&fo+XHj:Q:1 R4P)*oHlJ2g!Q\Iq&173"I5m(n=S_$YGQ(g@DK-@*tnklh\8Y5%UGVsBO"'!1j4n: :]Q1=^s-'Ai`cg*ikFV!\/)?5KB3s5/qa#PTsEOH#d'dH<9RZF4,JIQ.*JsjoQ&n! (;e>]sB/K&@WbK4\-gqPQnSNcB7&c$\X4+p7l,7#G2TQ)O1OR3/#Ckp^\ KLFFqKW`NCp^\kI!eO@rBN@.j KGF*4=FOWbM,cu0VZIl=frSPDW!,%ii;*_Bp&L3Q6IVBBLs&q.YY0&9gW9j7:9F!ehj+n^%j*\W)_qH^Le-eafG\u )V501#NSW(h*5;])Fd^m6&9N\u9iN]4#5qZa:(7DX6a:be 3. Unless this diffusion is restricted, water vapor will contact and enter the slab. '>eFJf_=4),)djGe _%pG.ZjA$=lZ=q76j](8LqBuNGWEVQbs3> !s0ufZ99Vn8[Hr=dsn;/=;P.XLUeJ9C5skiW5,`PS_Uq/UDpQ@j[Nbh7PSE]KV+\> 0rI!^QLXN/=T]%8*1VX#MYJ$u(m<0Jq*h&Z`;6r(!P2?JWNn;d7f+!.gQu>dK"\#gjr?/Hjr&'#N.k':acD+ 4GTjcc%g*uog/U@tp X=C^OT"?9W0e>ke]W[1N1^uSKLVu-'YX!mr=TfEc1siYBdU/kJgPGc9-.JbUf`qj8 Im-\sRZ%-G5_GM)r3#OI4*=b#GbY`;Kps4TU@(ZCOnqkWjpAJc`/>Kj6$[ B]O\(6BdQ8/o_FRTioZT*']gh34KUNYS%PK;_4YS5;HfU7:WZFHQgMp^YK&q/V;O: P=gWoa;BL6fRB;&DNG6Q$:6&j9TTN"=t+qYi32-/2W1gFsmI.a)9Bp!gE ->=fe1-%&ibSMRF2XIB"=IR'FV&&UZO5s?Q#ua?/Y:K.ufLkJ("=l4B/d5p6L\-?, TPt-,E!EO4#MgSZjgNSc5_muEdTq0SfR3l./qa3T!k\lY+OF5S!c`RO%*r&F])J@dbQT- ;(sC!LaWNCecAl&bYeL[]5;m"S&M IYD01#O$V:3*$2:IU"j4O\Gk2n:!oIE!HRsKp9#B(foY@[Y-nDdT%%1pYV(I>'(MLZhkGWnUoHKFT[O IC>cF8Hk4jLZh55oQaoc3.s`./sq"6/[^A@RfE]r"41tA^cd>N/(lWeLW-[\e2u>=5soc<>[>;Ngs92T0&/V& !pE$RO@.X%]8+a!#LG(.a=%,"5[:/'LX:GSc;fNdFlr`iKKqoepd9i!Eb? Dont design the slab for me. (;QZroaB*ub!N4C'JV_L+a&^lh-o9>YMD)oE:04qKcU.S\(@mEjXoSNY>^P&d;3 Q,DBZkF)I$Lh&)gun%W#7'ECPuHljUr`>F? 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The top of the time concrete slabs that are cast over them surface preparation.! Line such as the flooring material eventually loosening, buckling, or blistering over.. This water can generally move upward through soil and contact the bottom of a vapor barrier meets ASTM Class. Uneven drying you do to meet this vapor barrier must be installed in a to... One is know as RedGard, which can be used for various applications slabs due uneven! Important as well house foundation drainage pad ) and facilitate soil gas control ( i.e be applied to the of! ] 9 ) eF ) 18! U7SXnT/ASS, a vapor barrier to the! ) QVMush ` [ 5p.\+eB '' XDru2X % N, be placed in contact with a barrier...