Continuous Exterior Insualation

Hello,Location - Ottawa, Ontario, CanadaI am starting a new build shortly and require continuous exterior insulation based on our heating choice of a interior air handler and heat pump. I…

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Gothic arch cabin, roof/wall layers?

Hello,I plan on building a 20ft x28ft gothic arch cabin in two years. Imagine the building like a A-frame cabin, only with a ballooned/curved roof/wall. My plan is to install 3x6…

Complex roof cathedral insulation

I've been looking at all the blogs and am lost.  I'm sorry if this has been answered somewhere else!  I am in Austin, Texas. I have a room with a…

Insulation Strategy to Prevent Ice Dams

We are doing a whole house gut remodel of a 1954 home in Minneapolis, MN (Climate Zone 6A). It is a single level house with a full basement that has…

Need clarity on vapor diffusion ridge openings of conditioned attic

Hi all, We're looking at doing an unvented / conditioned attic in Southern California and struggling with the detail for a vapor permeable membrane at some of the ridges at different…

What WRB/Air Barrier to use for CMU wall + interior cellulose insulated wall?

We are remodeling an old concrete block building into our future net zero (or almost net zero) retirement home.  The house is located in Hillsborough, NC which is in climate…

ratio of closed cell foam to other insulation for ceilings and roofs

Hi - we are building an energy efficient house (radiant heat in slab) in southwestern Montana in CZ6 and trying to figure out our insulation options.   We've read an…

Sealing holes in Hardie soffit

We are converting our vented roof to a vapor diffusion port ( southeast US coast zone 3) and we currently have Hardie soffits. Easy access from the inside. What is…

Juggling Disparate Heating Load Calculations for sizing heat pumps new Maine home

Thanks for your great help with questions re our concrete-free slab and HPWH. Now I am looking for advice on sizing ASHP heating system given widely disparate heat load estimates: …