Why Roofing Contractors Don’t Like Roof-Overs

Homeowners often consider roof-overs, also known as a roof overlay, as a cost-effective solution to extend the life of their roofs. This involves installing the new roof over the existing one. However, roofing contractors typically advise against this approach for several important reasons. Local roofing contractor Northeast Gutters and Remodeling highlights some of them in this blog post.

Compromising the Roof Structure

One of the primary concerns of adding a new roof over an old one is the additional weight it places on the home’s structure. This, combined with elemental factors like snow buildup on the roof surface, could push the structure beyond its capacity, risking potential collapse or long-term damage.

Unaddressed Underlying Issues

A roof tear-off, which is the typical method of roof replacement, is more than just removing the old roof to accommodate a new one. It’s an opportune time to inspect and repair any underlying issues, such as weathered or rotten decking. Choosing a roof-over over a tear-off bypasses the chance to identify and address these problems. Consequently, the integrity of the new roof is compromised from the start, as it’s built over a potentially faulty base.

Ventilation and Warranty Concerns

Roofing systems require adequate ventilation to function correctly, promoting air circulation that wards off moisture problems within the attic. A roof-over can obstruct existing ventilation pathways, leading to moisture accumulation and an increased risk of mold, mildew, and wood rot. Moreover, most roofing material warranties require proper installation and ventilation; a roof-over can nullify these warranties, leaving homeowners unprotected.

Increased Difficulty for Future Repairs

Tracking down and repairing leaks becomes a significant challenge when two roofing layers are present. In the event of water intrusion, a contractor must determine whether the leak originates from the old or new layer and possibly contend with repairs that involve removing sections of both. This complexity leads to costlier and more time-consuming repair jobs.

Short-Term Savings, Long-Term Costs

While nailing a new roof over an old one may offer initial savings, it often results in higher costs down the line. The roof overlay doesn’t stop the aging of the existing roof or the progression of any pre-existing issues. It’s important to approach roof replacement with long-term integrity in mind, which is why roofers often recommend a complete tear-off over a roof-over.

Northeast Gutters and Remodeling provides a complete range of services for all your residential and commercial roofing needs, including roof replacement and repair. We’re proud to be factory-certified with GAF, North America’s largest roofing manufacturer, and are authorized to offer extended warranty options when you purchase a new GAF roofing system. We are also a BBB-accredited business with an A+ rating.

Give us a call at (860) 899-7878, or fill out our contact form to request an estimate.