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Green Products and Materials

  • Question & Answers

    Inappropriate Advertising on GBA

    Just got an email from GBA touting "Steam Shower Wellness Experience" in any home. I really doubt this is a green product. Seems like just another opportunity to throw heat…

  • Question & Answers

    World’s whitest paint, claimed to eliminate/reduce air conditioning needs

    https://www.usatoday.com/story/news/nation/2021/09/17/whitest-paint-created-global-warming/8378579002/I eagerly await the testing and results as I am about to start building a house in north Texas (climate zone 3).Any comments? It doesn't seem like this is "insulating…

  • Question & Answers

    PV + Electric with or Without Propane

    I am the owner/designer working with a green-certified contractor on a multi-generational, green, family home (~4000 sq ft). We are wrestling with whether to take advantage of the ease of…

  • Question & Answers

    Cork Paint on Brick Veneer

    I'm an energy auditor in Northern Colorado, 5000' elevation, CZ5, 6000 HDD. I have a customer who wants to paint the brick veneer on her wood framed house with cork…

  • Question & Answers

    Slab insulation

    I am a green building novice looking for help on materials for a new garage. I have seen some information and posts about garages and concrete slab, but I'm having…

  • Question & Answers

    Wood vs. PVC Trim

    Hi- I'm having carpentry repair done on my 1935 Cape. The wood trim on the dormers and windows is deteriorating. I've signed on with a carpenter. He's recommending using PVC…

  • Question & Answers

    Sanden Heat Pumps

    Just wondering if about the current state of Sanden in the U.S. and whether the product is properly serviced these days. I've been looking at these heat pumps for 3…

  • Question & Answers

    Magnesium Oxide Structural Insulated Panels

    Does anyone have experience with MgO wall boards in the US? Specifically concerned about potential issues related to moisture if anyone has an experience or thoughts about the material for…

  • Question & Answers

    Vapor Barrier for Existing Slab

    I'm seeking product recommendations for topically applied above slab concrete vapor barrier for old existing slabs, achieving a documentable .06 Class I vapor barrier per ASTM E96  .  I'm stuck…

  • Question & Answers

    Will an ERV/HRV do anything meaningful in the Phoenix desert heat?

    I'm building an 800 sq ft house in Phoenix AZ and since my goal is to be extremely air tight (certainly better than 3 ACH50), my thoughts move towards mechanical…