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Despite its advantages, reroofing is not without its drawbacks. One of the foremost considerations is local building codes. Many jurisdictions allow homeowners to place a new layer of shingles atop existing ones, but there may be limitations. Some areas only permit a single overlay, and if your roof has previously been reroofed, you may be required to remove the old shingles before installing new ones. Always check with local authorities before beginning the project to ensure compliance.
reroof over existing asphalt shingles

2. Roof Size and Complexity Larger roofs naturally cost more to replace. Additionally, roofs with steep pitches or complex designs (such as multi-layered roofs) will often require more labor and materials, thus driving up the cost per square foot. It's crucial to factor in these complexities when estimating the total cost of a replacement.
shingle roof replacement cost per square foot
