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Product Guide How water testing and treatment are critical to ensuring clean, safe water from your faucets By Caroline Blazovsky | July 15, 2026 Water is the quiet hero behind our lives—we drink it, prepare food with it, give it to our pets, bathe with it, and clean with it. But often we don’t give […]
Based on Martin’s answer here: https://www.greenbuildingadvisor.com/question/vented-attic-vapor-retarder US building codes do not require vented cathedral ceilings in zones 1-5 to have a vapor retarder (just need an air barrier). I also understand that the majority of roof moisture problems come from air leakage, not vapor diffusion. Assuming the ceiling is air tight, any incidental moisture from […]
Hi all. I have a question about the proper technique for dense-packing cellulose into existing wall cavities… Short version: When dense-packing a wall cavity with cellulose, how important is it for the installer to push a semi-rigid hose deep inside a wall and into the tops/bottoms of the wall cavities as opposed to just barely […]
BCI joists are blocked at rim joist with BCI cutoffs, leaving a 3/4-1” air gap between the block and rim joist (due to outward facing half of BCI flange). Considering two options for sealing and insulating: (1) fill void behind block with closed cell foam and then potentially add mineral wool on the inboard side […]
I’ve designed an 8’x8′ cathedral ceiling mudroom for clients in Kingston NY – Zone 6A. Although the addition is unheated and will be constructed on pier footings (not a full foundation), it is connected to the heated space of the house with a 32″ door that may be left open often.Please comment on the insulation […]