Wasden Posted December 18, 2014 Report Share Posted December 18, 2014 Polyiso Thermal Gard foam sheathing on interior basement. It's clearly labeled "combustible". Does this emit a toxic gas when burned? I've seen it used on exterior but is it acceptable for interior? Click to Enlarge 28.72 KB Click to Enlarge 51.58 KB Link to comment Share on other sites More sharing options...
Marc Posted December 18, 2014 Report Share Posted December 18, 2014 Many types of building material gives off toxic fumes when burned. That polyiso needs to be concealed behind gypsum. Marc Link to comment Share on other sites More sharing options...
kurt Posted December 18, 2014 Report Share Posted December 18, 2014 You want drywall for a thermal barrier anyway. Foam without mass inside it isn't particularly effective. Link to comment Share on other sites More sharing options...
Wasden Posted December 18, 2014 Author Report Share Posted December 18, 2014 Thanks guys! Link to comment Share on other sites More sharing options...
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