Your roof’s underlayment is just as important as the shingles attached to it. The underlayment is a hidden but integral part of your roof that serves as a secondary barrier against moisture in case there’s a leak.
What are the other functions of roofing underlayment?
The Primary Function of Roofing Underlayment
In addition to protecting your roof from moisture damage, waterproof underlayment also protects your roof’s underlayers from chemicals used in shingles. Keep in mind different kinds of underlayment offer varying levels of protection. That’s why if you’re planning a roof replacement, it’d be a good idea to do your research on the types of underlayment most suited to your area’s climate.
Kinds of Underlayment
There are three different kinds of underlayment: asphalt-saturated felt, non-bitumen synthetic underlayment, and rubberized asphalt underlayment. Each has its pros and cons. To help you get started, here’s a quick overview:
Asphalt-saturated felt underlayment – Of the three, this is the most affordable option. Asphalt-saturated felt underlayment is manufactured by saturating felt paper with asphalt to waterproof it and comes in 15-pound and 30-pound varieties. The latter is stiffer than the 15-pound variety but is less susceptible to damage during installation.
Non-bitumen synthetic underlayment – Most roof repair contractors prefer non-bitumen synthetic underlayment because of its excellent waterproofing capabilities.
Rubberized asphalt underlayment – This type of underlayment is the most expensive option but is worth the extra cost if you want to maximize protection against moisture damage. Thanks to its high percentage of asphalt and rubber polymer and adhesive underside, rubberized asphalt underlayment is completely waterproof.
Can’t decide between the three? Consult a professional general contractor.
Masters Roofing, the largest residential roofing company in the Mid-South area, offers a wide range of professional exterior services, including roof repairs and replacements. To request a free estimate, call us at (901) 871-7663 or fill out this form. We serve homeowners in Cordova, TN, as well as the surrounding communities.