Many roofing companies re-roof over existing shingles when installing or repairing a roof. There are multiple reasons Robbins Roofing will not re-roof over old shingles.
If you are having your roof repaired because of leaks and problems, you need to get to the root of the problem instead of hiding pre-existing problems. If you just cover over the existing problem shingle, you are not getting to the problem’s core. Removing all the existing shingles and felt paper will expose the problem and allow us to fix it properly. We will also inspect the roof deck and make sure it is in good condition. Some people may roof over existing shingles, but doing so can worsen the problem and ultimately won’t fix it properly.
If a roofing company does not remove existing shingles, your roof will have problems with moisture. The last thing you want under and between your shingles is extra moisture. Water and moisture can get lodged in between the shingles from wind-driven rain, and this can cause serious problems. Roofing on previous shingles will also significantly increase the heat off your roof because it adds another layer of asphalt. Also, if you have two or three layers of shingles on your home, it will cause your roof to sag from the extra weight.
Overlaying your roof will often cause problems with warranties. It can void the pre-existing roof warranty, and you may not be able to cover the overlaying shingles under a warranty. It is hard to get a warranty when roofing over pre-existing roofing problems.
A layover will not last nearly as long as a new roof. There is no doubt that the best solution to any roofing problems is to remove all pre-existing shingles.
Roofing companies roof over old shingles to cut corners. Robbins Roofing strongly advises against roofing over existing shingles. If you want a free quote on your residential or commercial roof repairs, contact Robbins Roofing.