> Spray foam insulation can seal essentially any structure, and it doesn't require much more than a small hole drilled into the wall between the beams which is easily spackled over.
A hard maybe on here. Done right it can of course, but you are depending on it filling the cavity without so much pressure that is breaks the walls. The industry as figured a lot out, but this is still compromise and some guessing and so it won't always work (it usually will). There are also many ways they used to put voids in old houses that would not be reached by this.
A hard maybe on here. Done right it can of course, but you are depending on it filling the cavity without so much pressure that is breaks the walls. The industry as figured a lot out, but this is still compromise and some guessing and so it won't always work (it usually will). There are also many ways they used to put voids in old houses that would not be reached by this.