When You Can And Cannot Reroof Over Existing Shingles

When You Can And Cannot Reroof Over Existing Shingles

When You Can And Cannot Reroof Over Existing Shingles

Your existing layer of roof shingles is deteriorating and you need to get a new roof installed. One question you might have is “Can I reroof over existing shingles?” The answer is, “It depends.” State regulations and the condition of your roof both play a role in determining if you need a roof replacement-tear off vs cover over.

In the State of Florida

The state of Florida has certain regulations on when a roof needs to be torn off before being replaced versus when it will allow the existing roof to be covered by new roofing materials.

In Florida, a roofer must remove the existing roofing in the following circumstances:

  • If the roof is water soaked or badly deteriorated
  • If blisters exist in any of the old roofing material. (This has one exception: if the roofer scrapes the blister down and nails around the opening.)
  • If the existing roof is gravel or of similar material
  • If the existing roof is slate or a similar material
  • If the roofing structure cannot support the weight of an additional layer of roofing material
  • If the existing roof has two or more layers of any type of roofing material

 

The Pros and Cons of Covering Old Roofing

What if your roof is eligible for a cover over instead of a full tear off and replacement? Is it a good idea to do it?

The Pros

  • It saves money. You don’t have to pay for the cost to remove the old roofing. This means less labor and lower disposal costs. Plus, you won’t need roofing paper or its installation costs.
  • It offers less liability. The roof takes less time to install so the potential for liability issues is lowered.
  • It offers similar quality. Almost every roofing manufacturer guarantees their materials whether there is old material below it or not. The second layer of shingles actually offers cushioning and protection if the first layer fails.

The Cons

  • It’s possible to miss damage. There may be damage below the old layer you aren’t seeing, which could cause leaking or failure in the future.
  • It can be a negative when selling your home. Inspectors will note the condition of your roof. The inspector may caution the potential buyer if he finds multiple layers of shingles.

If you need a new roof, call Mark Kaufman Roofing today for an estimate. Work with the professionals who work for you.

Read More: What is the Lifespan of a Shingle Roof