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5 Star Pittsburgh Roofing Contractor

Pittsburgh's Favorite Roofing Company

At Craig Gouker Roofing, we are your premier choice for roofing services in Pittsburgh for over 33 years. As an Owens Corning Platinum Preferred Contractor, we specialize exclusively in high-quality roof replacements and siding installations. Our commitment to excellence ensures that every project meets the highest standards of craftsmanship and customer satisfaction. Let our experienced team help you enhance and protect your home with dependable, professional solutions tailored to your needs.

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Writer's pictureCraig Gouker Roofing

Can I put new shingles over old shingles?


Can I put new shingles over old shingles?

Some homeowners or contractors will install a new layer of shingles over the old one to save time or money.  Most roofing contractors do not recommend this for several reasons.  In some areas building codes don’t allow this. The homeowner or contractor should always check with the city, township, etc. before installing shingles over old ones.  By not removing the old shingles, the contractor cannot see if there are other problems underneath such as rotten or missing wood.  Removing the old layer also allows access to install new protective membranes to keep the roof watertight.  Shingles installed on each other often tend to buckle.


Doubling the roofing layer adds significant weight that the roof structure may not be designed to withstand.  While not removing the old layer may save time and money initially, the lifespan of the roof is drastically reduced and will need to be replaced sooner.  Most roofing manufacturers will not cover warranty claims when their materials are installed over old.


Craig Gouker Roofing has been installing quality residential roofing in South East Pittsburgh since 1991 and is the expert in shingle roof replacement.www.craiggoukerroofing.com    (412)664-7679

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