What is the best metal roof for a residential home?
Short answer. For most homes the best metal roof is standing seam: concealed fasteners, panels that move freely with heat, and the longest service life, typically in 24 or 26 gauge Galvalume steel with a PVDF paint finish. Exposed fastener panels cost less but need fastener maintenance, and stone coated steel or metal shingles suit homeowners who want a shingle or shake look.
The main residential systems
- Standing seam: vertical panels joined by raised seams, with clips hidden under the seams. No exposed screws to leak, and panels expand and contract freely. Highest cost, best longevity.
- Exposed fastener panels: screwed through the face with rubber washers. Common on barns and budget homes. The washers age in the sun and need checking and replacing over the roof's life.
- Stone coated steel: steel panels coated in granules that look like shingles, shakes or tile. Quieter and less obviously metal.
- Metal shingles: interlocking pressed steel or aluminum pieces with a shingle style look.
Specs to ask about
- Gauge: lower is thicker. 24 gauge is sturdy for standing seam; 26 is common; 29 is thin and usually for outbuildings.
- Substrate: Galvalume steel is standard inland in Georgia; aluminum suits coastal homes.
- Finish: PVDF finishes hold color longest; SMP finishes cost less but fade and chalk sooner.
- Underlayment: a high temperature rated product, since metal runs hot.
Things to weigh in Georgia
- Hail: metal resists punctures, but hail can dent it, and some policies exclude purely cosmetic damage to metal roofs. Read your policy and cosmetic damage exclusions.
- HOAs: some neighborhoods restrict metal or only allow certain colors.
- Installer skill: metal is less forgiving of flashing mistakes than shingles.
Compare the options in metal roofing in Georgia and HOA roof approval in Georgia.