If the attic is relatively unobstructed with chimneys, plumbing stacks or structural members, consider installing polyethylene directly over the ceiling joists. Another approach is to hire a spray foam contractor familiar with air sealing to block these critical areas. Figure Extending the rafters provides space for insulation and ventilation Larger image. Material must be smooth and creamy. Rapid Roof III base and top coats are each applied at a rate of 1. Figure The top layer of insulation runs perpendicular to the bottom layer. Spray foam under the roof This approach involves installing closed-cell spray foam directly under the roof surface, right down to the junction of the ceiling and exterior walls.
Cut rigid board to fit between the ceiling joists and to extend from the exterior wall top plate toward the attic. This step is not necessary if an air barrier is already in place. If you choose to finish your attic, check for local code requirements and then consider the following steps:. Walk on and grout in just 4 hours Go to product See all products. Figure Ventilation occurs between sections through attic rafter vents installed in the rafter section. Ten pounds fills one square foot, one inch deep.
CONKLIN'S COATING SYSTEMS | Skyline Consultants & Building Services, Inc.
Silicone Sealants Today, of the , metric tons of sealant used in construction, 88, metric tons are silicone. This hospital-strength formula disinfects hard, non-porous surfaces in bathrooms, kitchens, and laundries, as it kills illness-causing germs and bacteria. Silicone and polyether will adhere to such contamination; however, a rigorous clean-out of the joint with a wire brush will help ensure success. Please visit the link below to view credentials. Handles weather extremes and resists chalking, cracking and checking. Application rates are dependent on the smoothness of the foam surface. Once installed, Duro-Last is watertight and virtually maintenance free.
A caulk has limited weathering properties. Figure Installing loose-fill insulation. Finally, with GacoRoof, building owners can coat their roofs with the same long-lasting waterproof coating that professional contractors rely upon. This eliminates roof venting and creates what is called a hot roof, where the attic space becomes part of the conditioned heated and cooled house space. In our shop, we bend all types of metal flashings and copings on the perimeters of buildings. Their extreme sensitivity calls for a temperature of 50 degrees when applied. Economic pressures have caused many formulators to use vinyl acetate as a copolymer or in blends with higher quality acrylic resins.