Recent Q&A

• Fastening Strapping in a Bonfiglioli-Inspired Ceiling

  Porch conversion to year round room. Sprayed 4-5” of CCSF to underside of roof deck. Rafters are 2x8. Plan to add 1.5-2” XPS strips to underside of rafters, then strapping,…

• GRK Fasteners with Zip-R Sheathing

  I am sheathing a 26x14 porch addition with 2" xps under zip system. Lead times on Zip-R were prohibitive and I could not source polyiso locally. Zip suggests that fasteners…

• Converting Porch to Enclosed Space

  I have a covered porch on 6x6 posts with sliders, 26x14 that I want to enclose as a 4-season room.I live in coastal MA, zone 5.I need help with my…

• Dana Dorsett Consultation ?

  I’m getting ready to start a porch remodel project and want some help thinking through my insulation and air sealing approach.Does Dana still visit here and consult and if so…

• Rigid insulation under cold floor/pier foundation

  Hi,Zone 5 (MA).I am insulating a porch on a pier foundation. I am starting with the floor and have begun by hanging 2" XPS (r10) across the undersides of the…

• Converting porch to living space — insulation plan

  Hi,Zone 5. I have a 13x26 porch with glass sliders that's on 6x6 posts about 18" - 40" off ground (ground slopes away from house) connected by glass doors to main…

• Insulating porch on piers

  Hi Everyone, Zone 5. I have a roughly 26x13 summer porch built on piers. 6x6 posts every 8.5 or so feet down to sono tubes, 2x10 band and floor joists,…

• Thermax over XPS rim joist

  I believe the answer is no, but no problem layering foil faced polyiso over XPS in the rim joist, correct? The XPS was can spray-foamed in, no issue if there…

• Insulation upgrades

  Hi Everyone. Thank you in advance for your feedback, you have all been so helpful. Zone 5A (coastal Mass) house. I have an older 3200 sq ft home with a…

• Boiler Combustion Air & Indirect HW tank question

  Hi Everyone, I live in MA (5A) and have a system 2000 oil boiler, currently pulling combustion air from my basement, which is a combination of poured concrete and fieldstone.…