Recent Q&A

• Exterior insulation

  I am considering adding a slightly modified exterior insulation detail my build coming up. Instead of using Rockwool comfort-board 80 3”, I am considering this assembly from the interior to…

• Parapet and insulation air barrier

  I am building a double stud wall that will have a parapet and I am wanting to avoid a hinge point so I'd like to balloon frame it. When this…

• Drywall instead of osb as vapour retarder/air barrier on ceiling with service cavity

  I see a lot of osb used to make a vapour control layer and air barrier on the ceiling then furring down 1.5" for a service cavity. Can a person…

• Is an air space between a ceiling and SIPs a problem?

  I have a timber roof system that goes like this. timber rafters plywood with a flooring glued to it and fastened down on top of the timber rafters suredeck membrane…

• Which wall system is appropriate: ICF or double-stud 2×10 with full height veneer stone?

  I have a client who wants a thick wall construction with full height veneer stone that comes "right out the ground", so there is no typical foundation to siding detail.…

• Do the “channels” in the Insofast product reduce the efficiency of this choice for exterior insulation?

  I really like the idea of one product for insulation/ capillary break and insofast seems to remedy this. BUT as the other articles have indicated, those wiring channels and even…

• In thickened edge insulated slab, I am looking for info

  In most application's, you see the insulation follow the slope of the thickened edge to where the nominal slab is placed. Would there be a problem with insulating/slab seal on…