Below the surface is one of the most important components of your roof. It can be tempting to judge the strength of your roof by its outside appearance. In reality, there is more that must go into determining what lies beneath your roof to protect you from possible from leaks, water damage and other threats. The underlayment of your roof is integral for providing this protection. Here we will look at what roof underlayment is and what it does, as well as which materials it can be made of.


Lying between the final coverings of your roof (shingle, tiles or shakes) and the roof’s base structure is the underlayment. This acts to protect your roof’s materials from the weather and from age.

Various factors go into keeping your roof from water damage. Included in this is the need for good quality flashing installation and shingling installation from professional roofers. Another important piece to this is underlayment, which is used to help reduce rotting on the roof caused by the sneaking in of moisture. It also keeps unwanted heat and cold from entering your home.

Overall, you can expect your roof to last longer if you have underlayment installed on it properly. You will be investing in a safeguard that will prevent you from having to later spend time and money on repairs or some preventative roof maintenance.


Your roofing contractors in Vancouver will figure out which type of material should be used on your roof. In the past, the most commonly used material was a building paper that was asphalt saturated. These were placed in between the structure of the roof and the top coverings just as underlayment is now. However, there are now various types available for use, including fiberglass, plastic polymers, synthetic materials and asphalt made based with rubber.

We at Kanga Roofing know the importance of underlayment when it comes to considering the roof in its entirety. Contact us to learn more.

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