
pghbob
PITTSBURGH, PA, US
Member
Co-designer and owner of 4800 sf Prairie style in Chicagoland, c 1998, many energy efficient items. Now planning Usonian for retirement, looking to achieve very high efficiency, possible solar generation.
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Recent Q&A
IECC to Mandate R-60 Roofs
It is stated at https://thehtrc.com/2020/insulation-requirements-2021-iecc that the new (2021) IECC code will call for at least R-60 worth of insulation for zone 5 roofs, with comparable changes for other zones…
Building envelope for reconstruction of Roof
My 90 year old brick house in Zone 5 (Pittsburgh) has a simple gable roof that covers a finished third floor. This space has knee-walls under a flat ceiling, above…
Insulation Behind Cast Iron Radiators?
My Zone 5 house is about 100 years old and is heated with hot water circulated through original cast iron radiators, which all have wooden covers. Almost all of them…
How to Insulate an Unvented Attic Below “Hot Roof”
My Zone 5A Pittsburgh house is at least 90 years old with an all brick exterior and slate roof over a completely unvented and uninsulated attic. Both gable ends are…
How to replace inefficient AC in an old house?
I'm planning a major renovation of my 90+ year old house in western Pennsylvania (zone 5). The existing central air system was installed by a previous owner at least 10…