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How to Improve Attic and Roof Ventilation (DIY) Family Handyman
WebNov 22, 2016 · A finished attic is insulated in one of three ways: Remove the drywall or paneling covering the ceilings and walls. Install fiberglass blankets between the rafters and wall studs, and install new drywall or paneling. Drill holes between studs and rafters and blow in insulation without taking down walls. Add insulation from the outside at the ... WebMar 29, 2024 · Flat Roof Insulation Costs. The average cost to install insulation on a flat roof is around $0.67 per square foot, using 1-inch thick PolyISO with an R-value of six. … WebNov 12, 2016 · Venting a finished attic. 5 year old house - finished attic. Permanent stairs, carpet, heat, ceilings, drywall - completely finished. The insulation is spray foam (open cell) directly on the underside of the roof deck (min - R19) and on the inside of the exterior walls. There was ridge vent originally installed, but sealed up with spray foam ... does symbicort come in generic form