Wall Sealing

 

 

 

 

We have previously discussed measures we have taken to reduce thermal transfer and maximize space for insulation. At this point framing is complete, roofing installed, windows and doors installed and we are tight to weather.

Soon the insulation and drywall will be installed closing in the wall cavities. Prior to that occurring, we have full access to the inside of the wall cavities and an opportunity to seal any areas that could potentially allow unconditioned air from outside the house to enter into the conditioned space of the building envelope.

Areas of concern are the sill plate to concrete floor connection, even though we utilized sill wall sealing foam during construction, all sheathing panel edges and perimeter openings for windows and doors, even though we taped all seams from the exterior with DOW Weathermate tape, and wall plate seams and penetrations.

 

 

 

 

DOW professional expanding foam sealant is utilized extensively in these areas and will dramatically improve how much (or how little) air infiltration can occur. We also seal any penetrations left behind from our platform staging and penetrations from plumbing and electrical rough-ins. These efforts also keep any air trapped within the wall assembly (once they are closed in) from circulating and causing convection which can create drafty conditions inside the house.