Recent Q&A

• PGH insulation and wrb details

  Zone 5 new build would love some feedback. We are installing 2” foil faced hi-R on the exterior, with windows/doors installed on the outside, taped in (zip-tape), the intention being…

• Potential for Condensation on Windows

  New build in western Massachusetts (zone 5) - we are using Loewen double pane windows, with 6” wall cavity fluffy insulation and hi R (r13) exterior continuous foam. Other pertinent…

• Does HRV system need to be connected to bath/kitchen exhaust?

  Hi I’m Lukas Schwartz, building a pgh in zone 6. We are aiming for ~ach 1 with spray foam and triple pane tilt turn windows. My ventilation contractor has proposed…

• Condensation on stone floor

  Southwestern Massachusetts early 1980’s construction. I can’t figure out exactly why my client’s entry floor seems to have condensation. Wall Construction is: vertical wood siding, felt wrb, 1/2 cdx sheathing,…

• Fentrim tape worth the expense?

  Can anyone weigh in on this super tape? My client is balking at $2k in tape, vs $400 for grace vycor. We have euro windows with no built in flashing.

• Do generous overhangs need venting or insulation?

  Building a 1900 sf house, Berkshires, ma - zone 6. We have an unvented roof assembly - flat roof 2 x12s. Interior to be spray foam, but what about the…

• Heated slab on grade insulation

  Building new in Berkshire county, MA. We have frost walls that are notched to 5.5" at the top. The architect plans show R-15 under the slab, running up the stem…

• Building a 1,900 square foot one-level house, slab on grade

  Building a 1900 sq. ft. one-level house, slab on grade. Plan is to insulate with closed-cell foam. With high-quality glazing (casement windows with triple layer weatherstripping) should I expect to…