A roof overlay costs less than a roofing replacement, but just because it’s inexpensive doesn’t necessarily mean that it’s cost-effective. In fact, a reroofing project or roof overlay will likely cost you more in the long run.
Pritchett Bros, your trusted roofer, elaborates further below:
The Disadvantages of a Roof Overlay
- Voided warranties – If the old underlayment isn’t torn off, your roof’s warranty may be voided. That’s because manufacturers have strict guidelines about the installation of their roofing products, and most shingle manufacturers usually require contractors to install one new layer of felt.
- Added weight load – During a roof overlay, the new shingles are placed on top of the old ones. However, this adds to the weight load your roof has to support and increases the burden on your roof’s structural support.
- Shorter lifespan – The extra layer of shingles traps heat and moisture, which can drastically reduce your roof’s lifespan.
- Underlying roofing issues – To inspect your decking for signs of rot and moisture damage, your contractors need to remove the old underlayment. If the old underlayer isn’t removed during the roof overlay, underlying roofing issues may shorten the lifespan of the new layer of shingles above.
Given that the disadvantages of a roof overlay far outweigh its pros, a complete roofing tear-off makes more practical and financial sense than a reroofing project.
Planning Tips for a Roofing Project
- Don’t get preoccupied with the costs – Focus instead on maximizing your returns on investment.
- Choose a roofing material that’s suited to the local climate – Your new roof won’t last long if it’s made of materials not suited to the local climate. To learn more about your roofing options, consult an experienced roofer.
Pritchett Bros, a family-owned and -operated company with over 50 years of experience, offers a wide range of professional roofing services. To get a free roof inspection, call us at (812) 275-3185, or fill out this form. We serve homeowners in Bloomington as well as the surrounding Indiana communities.