There are several different type of underlayment available for use with different roofing styles. The type of roofing being installed will determine which type of underlayment will be used. The most common underlayment for steep sloped residential asphalt shingle roofing is felt paper.
The felt underlayment is normally black in color and saturated with asphalt. Either a fiberglass or organic substrate is used in the production of the felt underlayment. The felt underlayment is not completely waterproof, but it is water resistant and normally available in two different thickness. The thinner underlayment is 15 pound and the thicker is 30 pound.
The slope of the roof will help determine the installation method of the underlayment. A roof with a lower slope will require more overlap of the sections of underlayment compared to a roof with a steeper slope.
Damage to the felt underlayment can be due to a number of factors. The quality of the underlayment can determine how durable it is over time. The age of the underlayment also influences its effectiveness. Over time, the underlayment becomes less effective. The underlayment can also be damaged by exposure to the sun and damage during the installation is not done properly.
If you want more information about asphalt shingle underlayment, please visit our website at www.apextx.com, call us 817-239-8744 or view our YouTube Channel at http://www.youtube.com/user/ApexRoofingInc.
