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Newport News Roofers: Article About Choosing A Roof Underlayment

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Along with the type of roofing material, the type of underlayment that homeowners select influences the longevity and durability of the roof. A roof underlayment provides an extra layer of protection underneath shingles, shakes or tiles and on top of the roof deck. Most underlayment is water resistant, so it can prevent leaks even if a large storm damages the roof. The most efficient systems can act as a primary roofing surface and withstand the elements alone for up to six months. They also have a high fire safety rating. Experienced, reliable Newport News roofers can help homeowners choose the best underlayment for their roofs.

Builder's felt, also called tar paper, is one of the most common types of underlayment available. It's made of felt paper saturated with asphalt. The paper is made from an organic or fiberglass substrate. Organic underlayment has a cellulose base. Both types come in rolls, and their thickness is measured in pounds. The 15 pound and 30 pound thicknesses are most common. Thirty pound felt is thicker and typically more stiff, in addition to being more resistant to damage during the installation of shingles, shakes or tiles. It can also protect the roof longer if the top layer of roofing material becomes damaged. Roofs with a steep pitch require heavier underlayment.

The roofing professionals from Jayhawk Exteriors of Newport News would be happy to answer any questions you have about windows or roofing.

Builder's felt is usually fastened to the roof with staples or tacks. In areas with high winds, plastic wind strips along the edges of the roof can prevent tearing. Plastic caps can also help keep felt attached. They help prevent leakage through holes made by the fasteners and they have better wind resistance than staples.

Synthetic underlayment is becoming more and more popular. It can be as much as five times lighter than felt, it resists tearing and wrinkles and it's easy to cut for faster installation. Many synthetic underlayments are also resistant to insect damage, rotting, algae and sun damage. Some are even slip resistant for better worker safety during the installation.

Rubberized asphalt is one of the strongest types of underlayments on the market, but it's more expensive than standard felt. It's self sealing, which keeps water from leaking around the tacks or staples used to install it. It also comes with an adhesive backing, and it can withstand the high temperatures underneath metal roofs. Underlayment backed with adhesive can offer additional protection against rain, snow, ice and wind. The adhesive helps the underlayment make strong, complete contact with the roof, reducing the risk of leaks.

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