You have two options when replacing your old roofing system: either you overlay it, or do a complete tear-off. While both are technically viable, tear-offs are the better solution most of the time.
In this post, Northern Pacific Roofing, Inc. explains why tear-offs are better than overlaying.
Tear-Offs and Overlay
The tear-off method involves removing the old shingles before installing the new ones. Overlaying, on the other hand, involves applying new shingles on top of the existing ones.
The Disadvantages of Overlaying
Although it requires less time and is more affordable to do, the overlay method has several key disadvantages that can prove troublesome in the long run. First, new shingles that are installed over the old roof won’t last as long due to the extra heat trapped between the layers. The second shingle layer also adds extra weight to the roof, which may not be advisable if you have an older home. Finally, you’ll have a more difficult time checking the deck and tracking leaks since you essentially have to check two roof layers. In some areas, an overlay is illegal.
As your local roofing contractor, we recommend the tear-off method as it’s a complete replacement. You get a new roof that has better quality, lasts longer, and won’t put as much weight on your home. In addition, the tear-off method allows your roofer to inspect the underlying components of your roof and address any damage there.
The only drawback of tear-offs is that they are more expensive and time-consuming due to the extra labor involved. That said, a brand new roof adds significant value to your home’s curb appeal and resale value. On top of that, the long-term effects of a completely new roof will benefit your entire home, from better insulation and ventilation to superior weather protection.
As your local residential and commercial roofing experts, we guarantee high-quality workmanship on every project. Call us today at (888) 919-8539 to learn more about our services. We are a local roofing contractor serving San Rafael, Petaluma and San Francisco, CA.