Questions- Page 2408 of 3124
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Best HVAC for a 1,100 sq. ft. passive solar house at 46 N latitude?
We are building high-performance, all electric, 1,100 sq foot passive solar home in cold weather winter climate with hot, humid summers. Slab on grade. Exposed concrete floor as thermal mass.…
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Air seal complex joint
I have a polyiso/wood and polyiso/polyiso joint that I want to air seal. So far I have been using spray foam to accomplish the task. Even with the low expanding,…
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Please help ID this loose-fill insulation
Recently did some work in an attic that contained a type of loose-fill insulation I've never seen before, and I would like to help the homeowner find out what it…
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Can this really be? ACH50 of 0.62?
With homage to Martin's Christmas poem, I thought I'd share the results of my blower door test and ask... Is this really to be believed? The interior volume of my…
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Using sill gaskets and tar paper on the interior for interior ledgers
So I have ledgers being bolted onto the foundation wall concrete to hang the joists after. Right now I have tar paper between the ledger and the concrete so that…
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Solar thermal buffs bite (Martin) back
Solar Thermal is Dead (NOT!) http://www.builditsolar.com/Projects/WaterHeating/Dead/Dead.htm I should start out by saying that I like a lot of the articles that Martin Holladay puts up on theGreenBuildingAdvisor.com site. They often…
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Roof and ceiling design advice wanted for steel building
Hello, I have been reading a lot of posts here on roofing and insulation but could still use some advice on my project, any advice or suggestions would be greatly…
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Any information about the efficiency & cost of direct Solar Hot Water systems versus using Heat Pump Water Heater and PV panels to power it?
Location: Northern California - Sacramento
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What to do about the existing housing stock?
Many of the articles and the focus here concern new construction, but this is an aging country with a mostly sufficient existing housing stock that dwarfs the new construction market…
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Basement insulation
We just bought our first home. The basement is mostly finished, except for a side room that contains the furnace, washer, and dryer, and some storage space. We'd like to…