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Kiryl | Posted in General Questions on July 22, 2025 10:53am Hello everyone, recently I read about Vapor retarders in ventilated attic, ventilated crawlspace, ventilated cathedral roof, and I understand that in cold climate I can place the Vapor barrier near the drywall (under insulation) in all these areas. And then I found on the […]
Hmq | Posted in General Questions on July 22, 2025 09:56am The attic has an HVAC system in the attic, There is insulation surrounding the unit and all throughout the floor boards in the attic The ceiling in the attic is not insulated so the attic is very hot. Is it advisable to insulate the […]
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I am moving into my new build home. I did 100% closed cell foam R7.3 per inch throughout basement (2″), 1st, 2nd (4″) and unvented attic (6″) Climate zone 4 Outside 3/4 plywood with blueskin vp100 3/4″ tuff R (foil faced) – R5 exterior continuous insulation on top + Hardie board. The seams are taped […]
I posted about this a while back but want to make absolutely sure I understood correctly… Zone 6, 1 inch silverboard xs (micro perforated) on the exterior, 1-1/8″ rimboard, 2 inch siverboard (non-perf) on the inside in the joist bays with the edges foamed in (tytan extreme window and door). Am I safe to add […]