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R402.2.8 BASEMENT WALLS _ <br /> Below-grade exterior wall insulation used on the exterior(cold)side of the wall shall I _ ; »,•l ,: <br /> extend from the top of the below-grade wall to the top of the footing and shall be ! ii- -� <br /> approved for below-grade use.Above-grade insulation shall be protected.Insulation <br /> Ji,used on the interior(warm)side of the wall shall extend from the top of the below- -`-'� ! 3 <br /> P. <br /> grade wall to the below-grade floor level and shall include R-5 rigid board providing a _ <br /> thermal break between the concrete wall and the slab. r I -- • <br /> �i+ ► 1 <br /> 1 r Floor foist r <br /> r A rake, <br /> Exterior siding --_-_� _ { 'r <br /> ., i ., ,. <br /> 2 14=1"le--1?-1r14116616411ri <br /> i \i 3,.plyxood or'4'drywall fire t:iock " '_.. :i..:- ....r,•. <br /> 1 1 'f <br /> ,Il \ 1 - 10"concrete t 4 r%OMAN"I <br /> r•, , <br /> i_ - foundation wall 4 4 t k ¢ ,: <br /> • <br /> Exterior grade varies I i r ,, ,i , <br /> L•--3 K"cavrty insulation i ►y <br /> (R-15} ! M' . • . -a.. <br /> l -4� <br /> - —1"polyisocyanurato .. . 1 •' <br /> rigid insulation(R-6.5) <br /> recommended wall assembly.R-13 bott applied over R-S foam. <br /> interior lnsulotion R-15 Continuous Y <br /> This is equivalent to an R-21 wall. <br /> 2x4 stud wall • <br /> ~.� Do not Install vapor retarders In below-grade walls <br /> 2012 International Residential Code <br /> •— 1/2"gypsum board interior R702.7 Vapor retarders.Class l <br /> or II vapor retarders are required <br /> 2x4 treated bottom plate ' on the interior side of frame <br /> Sill sealer-extend under walls in Climate Zones 5,6,7,$ <br /> II <br /> rigid insulation ' . 1. and Marine 4. <br /> • t , I .11 Exceptions: <br /> S 1. Basement walls. <br /> l �) 2. Below grade portion of any y <br /> • wall. <br /> 3. Construction where <br /> moisture or its freezing will <br /> a� �� not damage the materials. <br /> R-21 cavity allowed but not recommended <br /> due to potential moisture problems <br />