Would you recommend installing an asphalt roof over two existing layers of shingles? | | Yes | 2% | | In some cases | 10% | | Never | 86% | | Not Sure | 2% | | | | | Question: Would you recommend installing an asphalt roof over two existing layers of shingles? Top Answer (86% of 50 votes): Never.
Answer: Never
Explanation: Installing a new asphalt roof over two existing layers of shingles is not recommended. In most areas, building codes limit roofing to a maximum of two layers total, and adding a third layer is typically not allowed due to safety and structural concerns.
Multiple layers can add excessive weight to the roof structure, hide underlying damage, and reduce the effectiveness and lifespan of the new roofing system. A full tear-off is the proper method in this situation because it allows for inspection and repair of the roof decking and ensures a clean, properly installed new roof. | | Mendoza Construction | Answer: Never
Explanation: Before you could now only 1layer over existing | | Pacific isle roofing | Answer: Never
Explanation: LEARN MORE: https://4squareroofing.org | | 4 Square Roofing | | | ProMatcher | Answer: Never
Explanation: Not allowed by the Building Code | | Sharp Roofing | Answer: Never
Explanation: NO NO and NO | | JPS-WNC llc | Answer: Never
Explanation: Code does not allow more than two layers. | | J. Edmund Construction Roofing and Siding | | | ProMatcher | Answer: Yes
Explanation: Yes okay | | HAMMER & SONS CONSTRUCTION | Answer: Never
Explanation: We will not do this as when you read the fine print there is no shingle manufacturer warranty, and from an install stand point we are unable to change out flashings, install ice and water shield, and replace any bad wood when a "go over" is done. We strongly suggest against this | | American roofing &remodeling |
|