WebApr 20, 2024 · 2x10 is only 9 ¼" deep. Less a 2" air gap leaves 7 ¼". Less 1" for right Polyisocyanurate leaves 6 ¼" (r-6.5) Install Roxul at a R-21 for a total of R-27.5. Options are to either increase the 2x10 with the addition of a 2x4 or slightly less or switch to more foam products with a higher r-value per inch. WebMar 26, 2024 · Flash and batt garage ceiling with living space above? 03-25-2024, 11:33 AM I'm in Climate Zone 5. The garage space is unconditioned and the space above the garage is conditioned. I have 3" of CC foam applied in the joist bays against the subfloor (garage ceiling). Joists are 2x10's.
A Crash Course in Roof Venting - Fine Homebuilding
WebFlash and Batt 2 Can you put batt insulation over spray foam insulation? Spray Jones 49K views 2 years ago WHAT is this, and WHY do you want it under your floors? Matt Risinger 5.1M views 4... WebFeb 1, 2024 · Fiberglass batt is more flexible with room to compress to fit into tight spots. Most manufacturers cut the batt to fit standard frame sizes for uniformity in the process. However, manufacturers craft the batt with some wiggle room for compression without compromising the R-value. tripsix instagram
Flash and Batt for an Unvented Flat Roof Ceiling
WebMar 15, 2024 · Ceiling insulation typically uses loose-fill or blanket (batt) insulation in the attic, and roof insulation types include rigid foam insulation boards, radiant barriers, and spray foam... WebThe flash-and-batt (or flash-and-fill) approach combines a layer of closed-cell spray foam with a layer of fluffy insulation (fiberglass, mineral wool, or cellulose). The illustration … WebCut 1-in.-thick rigid polyiso insulation into 2-in.- wide spacer strips, and glue them to the inside face of each rafter with a spray-foam adhesive like Pur Stick ( www.todol.com ). Cut the polyiso insulation to fit snugly in each rafter bay, and foam it in place against the spacer to create a 2-in. chute or baffle. tripsitter clinic going public