This is equivalent to approximately 6 inches of cellulose insulation. The complete source for building, designing and remodeling green homes A collection of a thousand building details organized by climate and part of the house So how much does sedimented cellulose weigh? It depends on who you talk to. It was often said that cellulose from the old hammer mill was deposited at a density of 2.3 pounds per cubic foot. But Bill Hulstrunk, from National Fiber, says that newer types of cellulose settle at approximately 1.5 pounds per cubic foot.
I believe that a subject never trumps mathematics in this case. However, the usual method for cathedral ceilings is to install drywall (or continuous rigid foam) on the inner side of the ceiling before installing the cellulose. For more information, see How to install cellulose insulation. I have dense cathedral ceilings, made of plasterboard sheets and presheets.
My personal preference is prelaminate because it removes the tension from busted screws and arched panels. If you want to go the previous route to drywall, I recommend that you install an air barrier membrane (Intello Plus, Membrain, etc.). I would also recommend straps 1 or 2 times at right angles to the beams. This supports the membrane and provides a flat surface for the gypsum sheet, as the dense package will tend to stick out.
It can also be made with an air-porous mesh product such as InsulWeb, although at 24 oC. Gravity will work against you; unless you install straps, the swivel plates may have trouble getting the panels in place. If your climate requires a vapor retarder, you can use a vapor retardant primer on the drywall sheet. My drywall ceilings have been raised for 5 years and won't sink.
I think that strapping is a good idea to alleviate bulging problems if you use a net to hold the cellulose before installing the drywall, but I think some professionals use a large metal roller to put the cellulose back in place. I wish my installers had done this, as they had trouble pushing the bump back to get the drywall in place. I also believe that cellulose acquires a certain stiffness as it fuses, thus resting itself between the beams. I'm asking because I'm trying to figure out this detail myself in my current newly built house.
I always intended to staple the vapor retarder (CertainTeed Membrain) to the underside of the roof studs before gluing and screwing the drywall. When I took a moment to think, I realized that gluing would be a waste in this scenario, since it would only stick to the surface of the vapor retarder. I will also be adding R-60 cellulose to the roof, and I wonder if Bill Hulstrunk's successful experience of adding R100 to the roof without it sinking was always with glue with the screws. Become a GBA Prime member and get full access to GBA articles, encyclopedia, videos, CAD library and more.
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Thin drywall can hold 1.2 to 1.6 pounds per square foot without any support. Thicker drywall can hold between 1.5 and 2.1 pounds per square foot without additional support. Cut and tension affect the supported weight. Yes, drywall adds R value and helps to insulate.
This is because any material resists the flow of heat from one side to the other. That said, drywall is not a particularly efficient insulating material. Drywall only adds about R-0,5 to R-0,6 to the entire wall assembly. Scott Pfleeger Pink Drywall and Wall Repair When you're hired to fix a wall, are you identifying imperfections, cracks, dents, or small nail holes that require attention, even when the customer doesn't mention them?.
Drywall is considered a suitable building material for interior walls, but its main purpose is not to insulate. However, compared to wood paneling or lathe and plaster, drywall is very effective in damping the movement of sound through a house. To facilitate the comfort and consistency of a home's temperature, stopping air flow is as important as having insulation. HANGPro Drywall Lift TM WALL HANGPro Drywall Lift TM By Myron Ferguson Today, there are many new and innovative products coming to market.
Alpine Insulation is proud to offer reliable, quality drywall and insulation installation services in all areas of central and southern Wisconsin. Drywall and siding stop convective heat transfer in the standard wall design, and fiberglass block insulation prevents conductive heat transfer. However, drywall confers many benefits to the home, some of which actually help insulate your home outside the R value. In addition to the small amount of insulation provided by drywall, properly installed drywall prevents air from moving through a wall assembly.
This is because insulation saves you money and energy by reducing heating and cooling needs. Using the right drywall anchor will allow you to hang decorative and practical items in your home without worry. Keep reading the rest of this publication to learn more about the insulating properties of drywall and other alternative wall coverings. .