How many times can new shingles be put over an existing roof? Two or three times?
How many times can new shingles be put over the existing roof
glassroof
Related Topic
- Ok to roof-over in the rain
- Roof Decking: Plywood/OSB over skip sheathing (decking) or should I strip to the rafters
- How to temporarily remedy the rotten, leaky roof on a mobile home?
- Why are the new roof shingles showing these lighter patches in cool weather
- Water – How to get under shingles to replace the roof edge flashing
- Deciding whether to replace missing shingles or the entire roof
- Q. Should I be able to push up shingles on edge of new roof
- Put drip edge underneath felt without removing roof
Best Answer
In the U.S. for composition shingles it is 2 roofs only, then you must tear off all roofs. Also must tear off if roofing is wet, wood, slate, tile or cement. (See ICC 1510.3)