Real ChatGPT answer · index seedzT1AbFE0yqgcompleteHome services and improvement · roofinginformational
What are the structural implications of adding a second layer of shingles over an existing roof instead of doing a complete tear-off?
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The searches the AI actually ran for this prompt.
SEED QUERY
What are the structural implications of adding a second layer of shingles over an existing roof instead of doing a complete tear-off?
1 real search · 1 real-search pass
asphalt shingle roof overlay second layer structural load dead load tear off building code requirementsGoogle ↗
OBSERVED
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Searches and sources
ChatGPT1 real searches · gpt-6
asphalt shingle roof overlay second layer structural load dead load tear off building code requirements Google ↗
- CHAPTER 9 ROOF ASSEMBLIES · codes.iccsafe.org
- 503.13.3 706.4 Roof recovering. Where the application of a new roof covering over wood shingle or shake roofs creates a combustible concealed space, the entire existing surface shall be covered with gypsum board, mineral fiber, glass fiber or other approved materials securely fastened in place. · media.iccsafe.org