Nettet19. des. 2024 · The foamboard rests on the battens, not the ceiling material; then add more insulation on top. When needed, you can locate the joists in the loose insulation so you you don't go through the ceiling, and you have more depth of insulation. So a better job for the more work. Nettet16. sep. 2024 · Generally, though, most of the products you’ll consider putting between your ceiling joists will have an R-value of 10 or above. If you live in a cool climate and …
Air gap in ceiling insulation, unvented : r/Homebuilding - Reddit
Nettet18. aug. 2024 · Layered Insulation for the Ceiling & Walls. We ended up crafting an insulation sandwich of sorts, with all of our layers: LiquidFoil on the roof decking and all rafters; Baffles to allow air flow to continue flowing from soffit to ridge vent; 1 inch rigid foam boards over the baffles; Canned Spray Foam for all the seams; R-19 … Nettet9. apr. 2024 · When installing insulation in your attic, place the foil or paper backing against the ceiling, with the fiberglass facing the roof. Do not let the insulation touch … geisha drinking coffee
Insulating rafters AND joists - good idea or not? DIYnot Forums
NettetNote: The prices above are based on Rawlinsons’ Australian Construction Handbook 2024, Edition 36. 3. Installation difficulty. The thicker the insulation, the harder it gets for the installer to cut the ceiling batts.Likewise, irregular spacing between the ceiling joists will require more cutting work adding to the cost. Nettet23. aug. 2016 · Yes, you should spray foam your ceiling joists only (The back to the sheetrock), and if you were too paranoid and concerned about not having your HVAC system in a ("conditioned space", WHICH IT IS NOT even if you sprayed the roof shedding, ) you could spray foam your ducting too. Spraying under the shedding comes … NettetPut insulation meant for 2x4 framed walls between the joists (which will be the same height as the joists), then lay a perpendicular layer of attic insulation (maybe R-30) on top of them. Option 2 has the benefit of preventing any thermal bridging via the ceiling joists. geisha facebook covers