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GBA Pro Help

  • Question & Answers

    Smart controller for Renewaire Premium X

    I gave up on the Zehnder ERV mostly because of price, and I am running round metal duct.  Instead, I purchased a Renewaire Premium X.  For the initial install, all…

  • Question & Answers

    Advice on metal flashing for window and window trim

    We are going to be residing a room on the 2nd floor and reinstalling the windows there.  I'm trying to figure out how to do the metal flashing for the…

  • Question & Answers

    Soffit situation – vented or unvented

    Zone 2 Phoenix, AZ Question about soffits—I have a flat roof with trusses that have heels, and the attic will be conditioned from the heel inward. The eave portion of…

  • Question & Answers

    Re-roof sheathing question

    Aged and damaged shingles to be replaced prior to PV install. Discovered decking is only 3/8 plywood, with soft flexy areas and visible Hi/Lo wave on West pitch. 2X rafters…

  • Question & Answers

    Enclosed attic detail review – zone 2

    Zone 2 - Phoenix, AZ Single level residential home Hello.  I'm hoping to get some feedback on my plan to create a conditioned attic on my flat (0.5:12) roof.  I'd…

  • Question & Answers

    R-60 rigid insulation attachment for cathedral ceiling with exposed rafter.

    Hi, I am designing a home with double studded wall, cathedral ceiling (exposed beams and rafters, decking over the rafters). The roof slope is 3/12, Marine 4 climate zone (roof…

  • Question & Answers

    Fireproof (resistant) cathedral roof

    --Looking for modifications to make one of the "5 Cathedral Roofs that work" in Martin's Dec. 11, 2020 article  more FIRE-RESISTANT.(https://www.greenbuildingadvisor.com/article/five-cathedral-ceilings-that-workcid=287281&discussion=comment#comment-287281)We are building a new home with cathedral ceilings in…

  • Question & Answers

    Mitigating moisture at wood finished vaulted ceiling

    Hello Everyone!   I'm renovating a room with a vaulted ceiling whose final finish is walnut plywood. This home is in Oregon. On the interior side of the insulation/framing, I'm…

  • Question & Answers

    Smell from damp proofing

    We live in a detached home. Our neighbours damp proofed one side of our foundational wall with Jet Black AE, replaced our dimple wrap, and replaced our broken weeping tile.…

  • Question & Answers

    Interior Foundation Wall Treatment

    Hello everyone and thanks for reading. We’re early into our renovation of a 1900’s detached house in Toronto, Canada. We’re close to finishing an underpin, which includes exterior waterproofing and…