These changes relate to the type of materials that can be used and how the roofing materials are to be installed. There has been code changes for homes in high fire risk areas and ones that are subject to strong wind conditions.
This is also weight concern, as well as a concern that the new roof is not compatible with the old roof. Secondly, is the new roof being placed on top of the existing roof. First, there is the concern about the weight of the new roof is it heavier than what the roofs’ framing is designed for? If the old roof was wood shingles, which are very light in weight, is replaced with a concrete tile roof, which is very heavy, then there may be a structural failure or even a collapse. Reroofing a home may require permits in many building jurisdictions due to a number of concerns. a storm has blown off an area of the roofing and is damaging the interior of the house. Most building jurisdictions allow for repairs to be done temporally if it is necessary to stop further damage to a home and until a permit and proper repairs can be made i.e. Normally you can do temporary or emergency repairs under certain conditions Look for cracked or damaged rafters or trusses, ones that are leaning or sagging and for evidence of water damage. Tip: If your roof has suffered damage due to a tornado, hurricane or other wind events, take a few minutes and go into your attic and check for damage.
Roofing codes in these areas are more stringent and both repairs and reroofing are more likely to require permits. Roofs in areas that are subject to high winds, tornadoes and hurricanes will often experience gusting and turbulent winds that change directions, often carrying flying debris with them.
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