Flat Roof Insulation Precautions And TipsFlat roofs are stylish, but they can often be very difficult to maintain. One very important step in maintaining a flat roof's condition is the insulation products and techniques used in the installation process. There is a variety of flat roof insulation that can be used, but there are many factors that will determine which one is best. Flat roofs present a few problems for home owners. They are difficult to install, and they have drainage problems. There is not very many long lasting solutions for flat roof maintenance, especially when the insulation is inadequate. The biggest problem presented by flat roofs when considering the insulation to use is the fact that water often pools on the roof. Slanted roofs provide a run off for rain or excess water, but with a flat roof there is no way for the water to escape. A few precautionary measures can be taken to ensure the integrity of the flat roof. With these precautions, almost any type of insulation will work for the flat roof. First, there needs to be proper ventilation. Having good ventilation will give the moisture in the house a way to escape instead of getting trapped between the flat roof insulation and the roof. Ventilation can be achieved by installing side vents in the exterior walls of the home, or having properly sealed roof vents that are positioned so that water will not get in to them. The vents make sure the water has a way to get out, and a vapor barrier keeps any remaining moisture from rotting the ceiling. A vapor barrier should be placed between the ceiling panels and joists and the insulation (with the insulation on top). Vapor barriers are usually made from paper-backed aluminum, polyethylene film, or asphalt-laced building paper. The vapor barrier is very important to have with a flat roof. The last step to ensuring the integrity of a flat roof and the flat roof insulation is sealing any bypasses. The bypasses are holes or cracks in the insulation where hot or cool air can pass freely and create pockets of moisture. Fiberglass has cracks between each sheet of insulation, so it might not be the best choice for a flat roof. Many people prefer to use spray foam or expanding foam insulation for their flat roofs because it creates that seal automatically. Dow Building Solutions has an excellent spray foam product called STYROFOAM. After following the safety precautions, almost any insulation will work for a flat roof. The decision then depends on the consumer's budget and the particular roof's needs. |
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