Is replacing a roof considered structural?
Short answer. Usually not. Replacing shingles, underlayment, and even some decking is generally treated as work on the roof covering rather than a structural change, although most Georgia cities and counties still require a permit for it. It becomes structural when rafters, trusses, or other load-bearing framing are replaced or altered, or when a much heavier roofing material is added.
Covering versus structure
- Roof covering: shingles, underlayment, flashing, vents, drip edge, and ridge cap. A standard replacement changes these.
- Roof deck: the plywood or OSB sheathing. Replacing damaged sheets during a reroof is routine and normally treated as part of the reroof. See OSB vs plywood roof decking.
- Structure: rafters, trusses, ridge beams, collar ties, bearing walls, and their connections.
When a roof project becomes structural
- Sagging ridges or rafters that need to be sistered, replaced, or reinforced.
- Fire, tree impact, or long-term rot that damaged framing.
- Changing the roof pitch or shape, or adding dormers.
- Switching to a much heavier material, such as clay tile or slate, which can require an engineer to confirm the framing can carry it.
- Adding significant rooftop loads, such as a deck.
Why the distinction matters
- Permits: reroof permits are usually simpler; structural work typically needs plans and framing inspections. Requirements vary by jurisdiction. See roofing permits in Georgia.
- Contractors: structural repairs may call for a general contractor or engineer in addition to the roofer.
- Home warranties: builder structural warranties typically exclude the roof covering.
- Real estate: inspection reports separate roof covering condition from structural concerns, and buyers react differently to each.