Atlanta Roofing: Article About All About Underlayment
Roofing underlayment offers an extra level of weatherproof protection for buildings of all kinds, creating a watertight and thermally insulating barrier underneath the roofing material. Almost all forms of roofing have some kind of seam, from metal sheets to traditional shingle styles. Wherever these roofs have seams, there is some risk of moisture penetrating into the interior of the building. Underlayment serves to maintain a strong seal, keeping the house dry and structurally sound.
Roof underlayment may be made of a range of materials, from fiberglass to synthetic materials to rubberized forms of asphalt. The best kind of underlayment depends on the local climate and the type of roof, both its design and its material. Most reliable Atlanta roofing companies can help advise clients on the relative benefits of the most common types of underlayment. For example, on a steeply pitched roof, it may be advisable to use anti slip underlayment for the safety of anyone installing new roofing. Organic underlayment may be preferable for homeowners interested in eco friendly options.
One of the primary decisions when selecting underlayment is whether to opt for felt or synthetic materials. Felt, the more traditional material, is typically less expensive than synthetic underlayment. However, synthetic underlayment is lighter, resists moisture and provides roofers with better footing while they work.
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Labor cost can also vary, with certain types of synthetic underlayment requiring a more intensive installation process, leading to higher costs.
In areas with heavy precipitation, whether rain or snow, it's generally a good idea to invest in an ice and water shield. This form of underlayment is composed of polyethylene and rubberized asphalt, making it extremely resilient even in the worst weather conditions. The shield should cover the entire roof, thereby stopping water from penetrating even in cases of broken or lost shingles.
Underlayment should not be confused with flashing, another component of any well built roof. Flashing, typically made of metal, is key to avoiding any water penetration along any roof valleys and anywhere that the roof is otherwise particularly susceptible to damage. Flashing is also commonly seen around chimneys and dormers. It comes in metal sheets and is designed to add extra protection to high risk areas. On the other hand, underlayment is usually made of a thin and flexible membrane of some kind and is meant to cover the entire roof. Whereas underlayment goes under the roofing, as the name suggests, flashing is meant to sit on top of the roofing.