Am I proposing home clothing? Damart thermal under layers and full arctic gear for homes, able to be put on and taken off as needed?
I don’t know the sweet spot but most older structures are not very recyclable. Lead, copper and to a lesser extent glass, timber and other metals but the brick, mortar and concrete are usually only any good as hardcore, with a very energy inefficient system to crush them.
Physics at uni helped. Building science corp publications /videos. Manufactures offer some very good information to support their products.
I haven’t found many books though. I’d appreciate recommendations.