Is a Roof Overlay a Smarter Choice for Roofing Problems?

By Gerry Donaghue • March 15, 2018
Is a Roof Overlay a Smarter Choice for Roofing Problems?

In a bid to save on the costs of a roof replacement, many homeowners opt for an overlay. Overlaying is the process of placing the new shingles over the old. However, there are several reasons that an overlay might not be the best solution for your roofing problem.

The Overlay Adds Weight

Your home’s roof was constructed to hold a certain amount of weight on top of it. The architect and engineer likely accounted for the weight of one layer of shingles plus snow, leaves, and other debris usually found up top. The addition of a new layer could prove to be too heavy to support and cause damage to the house.

The Roof Is More Susceptible to Being Compromised

Part of the process for replacing a roof is stripping away the shingles and other components, such as the flashing. With overlaying, the other roofing components are not replaced, and this could mean they are more vulnerable to being compromised by rainwater. This may lead to early rotting and other problems.

Hidden Damage Is Often Not Detected

Damage to the roofing is not just limited to the shingles. There is a possibility that your roof has damage beneath the shingles. With an overlay, existing problems, such as rotted wood, often go undetected. Over time, the underlying problem can worsen and you could end up needing a complete roof replacement.

The Overlay May Not Last Long

Overlaying requires considerable prep work to get the shingles to properly fit. Unfortunately, the methods used can often compromise the integrity of the shingles, which could give them a shorter lifespan.

Your Warranty Could Be Voided

One more consideration is the terms of the roof’s warranty. Most manufacturers have strict policies in place when it comes to warranty issues. Depending on the manufacturer, there is a possibility that your warranty could be voided if you opt for an overlay instead of a complete replacement.

 

In many cases, a complete roof replacement has advantages over an overlay. Before making a final decision for your home, talk to your roofer. He or she can provide invaluable input on the right step for your home.

February 17, 2025
Welcome to our new website for GT Donaghue Construction & Metal Roofing, LLC! We are so excited to roll out a much needed refresh on our website and share it with all of you. And with a new website comes a reintroduction to us here at GT Donaghue Construction! For those not familiar with us, GT Donaghue Construction & Metal Roofing, LLC (formerly Donaghue Construction) has been in business for almost 40 years working across New Hampshire, Vermont, Maine, and even parts of New York bringing quality craftsmanship and decades of experience to all the projects we complete. Gerry Donaghue, our founder, started this business out of his house formerly in Nashua, NH and has sustained a quality business over the years through hard work and resilience. We have navigated fluctuations in the industry across the years with some years only allowing for a few members on our crew and some calling for multiple crews and larger partnerships. The one thing that hasn’t changed? Gerry’s commitment to high standard work and building relationships with the folks he serves. A family owned business, his daughter Ashley supports him on his admin team (after she did her time driving the dump truck for him as a teenager!), his brother Andrew works on the job site, and his wife Pat has always been there to help when needed-you can sometimes see her in the office or even at a home show! Gerry has a wealth and variety of experience ranging from ground up new builds, additions and interior remodels, deck installations, siding replacements and installations, and of course his favorite-metal roofing installations. Whether it is a unique custom job or a traditional upgrade, GT Donaghue Construction & Metal Roofing can help you out! We hope you enjoy our new website and feel free to reach out to us when we can help at your house!
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