Solar + roofing integration, 55 tools

Solar and your roof, planned together

Your roof and your solar array are one decision, not two. These tools cover reroof timing, mounting cost by roof type, structural load, warranty overlap, and every cost that shows up when roofing and solar projects meet, starting with the roof condition checks in the Building America Solution Center's roofing guides.

Performance and comfort

How your roof affects panel output

Approvals and special cases

HOA rules and historic homes

Questions

Frequently asked

If your roof has less than 10 years of life left, reroofing first almost always costs less than removing and reinstalling panels later. The reroof before solar calculator compares both paths using your roof's real age and material. The financing cost per watt calculator folds the reroof cost into the per-watt figure lenders look at.

Yes. Tile and slate roofs cost more to mount on than asphalt shingle because of extra flashing and breakage risk. Pick your roof type from the mounting cost tools above to see your real number. The International Residential Code's roof assembly rules set the flashing and attachment minimums behind those prices.

Most roofs built to modern code handle panel weight without reinforcement, but snow load and wind uplift both add to the total. Check the structural load estimator and snow load calculator for your specific numbers. The panel lifespan estimator shows how long the array sitting on that structure is expected to last.

Panels usually need to come off and go back on, which adds labor cost on top of the repair itself. The removal and reinstall cost tool and hail damage tool both cover this scenario directly.