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Sarasota Weather

Can I Layer Shingles on My Roof? Yes, in Florida up to (2) layers.

Like many common home improvement questions, the answer is you can, but you need to decide if layering shingles is the best course of action for your home. It isn’t uncommon to layer a second roof right over the first and then tear everything off before you put a third layer down. Building codes and most municipalities will usually allow you to overlay a second (though never a third) layer of asphalt shingles over an existing shingled roof. You will need to check with your building  inspections department to be sure.

Common Problems with Layering Shingles Owens Corning pc-logo-small
Layering shingles has a few drawbacks that you should take into consideration before you decide to lay new shingles over the old.

  • With (2) layers your not eligible for the greatest dollar reduction in your insurance premiums.  Contact your insurance agent for details!
  • If there’s any curling of the old shingles, the new shingles will not lay flat.
  • Moisture can get trapped under the heavy layers and cause premature rotting of the wood.
  • You do add excess weight to the roof framing, which can cause the decking and/or roof joists to bow and cause a ripple effect in the roof.
  • Overlay will not work well at all with dimensional shingles, only three tab. Campaigner GAF ELK LOGO CE18239
  • If you do overlay, you have to cut off the tab of the first course which will give you a "bump" about 6" up the roof all the way around the shingle roof.
  • You must pull off both layers before you roof the next time. Many times the cost for a double tear-off is more than doing it two separate times.