Alternatives to Foam
My North Texas Climate (hot/mixed humid) is not-so-extreme.
But we WASTE a lot of Energy and money trying to stay comfortable.
Even more than folks in the North-East.
The standard Low Energy Enclosure here is almost always achieved with spray foam or sometimes with a combination of spray foam and rigid foam.
I can design structures to around a HERS 50 with these products plus some “gooey-stuff”
If I want to go below HERS 50… I quickly hit the dreaded diminishing return.
Not because R-value “stops working” but because the “COST” of foam is TOO darn high.
This is what sent me on the path for Alternatives to Foam.
Martin will attach a couple of drawings and then I will be asking for suggestions and feedback.
I will provide more description after the drawings are posted.
I understand the Priorities for designing in a Hot Climate
Proper shading and window orientation …
I would prefer not to go into those aspects in this thread.
I would rather focus on Good airtightness, Reduction of thermal bridging and low cost/high R-value.
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