Approved. I should probably retract that as we all know that applies to everything. Learn how to beef up your wall's weather protection in 4 easy steps. Add a comment. Cellulose Guy- "man our stuff is elastic and it moves with the house and it breathes but not to much and that closed cell stuff is just to expensive and to rigid and it doesn't breath and its toxic and don't buy all that crap about structural value and racking load man". And it – that’s unclear. If a cavity is present then this is the quickest, cheapest and least disruptive I could however apply almost the exact same assembly as the wall in terms of sticking to established methods of framing details, be it attic with trusses or cathedral (hand stacked) framing. It's a good idea to cover nearby furniture or finished flooring with plastic tarp to avoid getting any of the insulation on it. Your right this is a "not so perfect" option and there are some higher performing methods. % of people told us that this article helped them. When insulating walls from the inside, it is of great importance to ensure high-quality ventilation of the room. 2) Extend your roof overhangs to keep sun off your walls. Energy Value of Masonry (brick, block) Construction Homes; Thermal Mass, R-value,block vs. wood. Tom Silva replies: Filling walls with a fluffy layer of fiberglass insulation is one of the easiest and least expensive ways to make your home more energy efficient. Frankly, I also don't like the fact that if I could accomplish all those details correctly there would be like to no benefit in terms of affordability and the resulting finished product is really not lending anything in terms of structural value. When the whole ceiling is glued, aerated concrete slabs must be primed. When copying site materials, keep an active link to the source. It protects the head flashing, and the amount of water that gets behind the siding is easily handled by evaporation. and not for a wall? I imagine that Gregg wants to insulate, to make his home comfortable and cheaper to heat? But sometimes, when the exterior decoration of the building is already completed, and the interior finishing work is just beginning, it is more advisable to lay thermal insulation from the premises. Using rigid insulation will result in only a 10mm reduction in overall wall thickness, as mineral wool can be used to fill the cavity, whereas a 50mm cavity is still needed with the rigid boards. In my climate here in Boise Idaho, you need about 3.5" of closed cell foam to achieve this. I realize how hard it is to find people with real world experience to help sort out both the benefits as well as the drawbacks to many of these off the beaten path methods.