
Insulation & Air Sealing


Window banks need to line up neatly for the trim to work out. Foam walls add the extra possibility of compressing the backing. So there's that.



A superinsulated sunroom might sound like an oxymoronic idea, but it is not. Just use triple glazed windows and thick foam over the wall framing and roof


Built tight and verify. And then ventilate.


The final step: center it in the opening, and seal the perimeter


Blowing a thick bed of insulation into an attic is really a two-person job, but you can do it by yourself if you have to


A few really cool tricks and a Master Class at the end


Tight makes right behind tubs and showers—because they can be *ruff* to retrofit

You can dig in to the roof without adding more insulation, but you can't dig far

