Commercial Roofing Materials: A Coastal Georgia Building Owner's Guide

The best commercial roofing material for Savannah depends on the building type. For warehouses and retail with energy-efficiency goals, TPO single-ply (60-80 mil) is the most common new install at $5.50-$8.50 per square foot. For long-life and hurricane-rated performance, standing-seam metal lasts 40-50 years at $11.00-$18.00 per square foot. For restaurants and grease-exposure rooftops, PVC is required because animal fats degrade TPO. Coastal Roofing of Georgia installs and services all seven main commercial materials across the Coastal Georgia region.

Commercial roof lifespans in Coastal Georgia: TPO 18-25 years, PVC 25-30 years, EPDM 20-30 years, standing-seam metal 40-50 years, modified bitumen 15-20 years, built-up roof 20-30 years, acrylic/silicone coatings add 10-15 years per cycle to an existing roof. Coastal Georgia exposure (salt air, humidity, UV, hurricane wind) typically cuts manufacturer-stated lifespan by 10-15% compared to inland installs — which is why maintenance and inspection cadence matter more here.

For new installations in Savannah, TPO single-ply is the cheapest commercial roof system at $5.50-$8.50 per square foot installed. EPDM is close behind at $5.50-$9.00 per square foot. For restoring an existing roof rather than full replacement, an acrylic coating is the lowest-cost option at $2.50-$4.50 per square foot — but the existing roof must be sound enough to coat. Coastal Roofing of Georgia inspects every roof before recommending coating versus replacement.

TPO (thermoplastic polyolefin) and PVC (polyvinyl chloride) are both heat-weldable single-ply commercial membranes, but PVC has significantly better chemical resistance — especially to oils, greases, and animal fats. TPO costs less ($5.50-$8.50 per square foot in Savannah vs $7.00-$11.00 for PVC) and works for most warehouses and retail. PVC is the required choice for restaurants, food processing, and rooftops with kitchen exhaust where grease exposure would degrade TPO.

Standing-seam metal lasts 2-2.5 times longer than TPO (40-50 years vs 18-25 years) but costs roughly 2 times more upfront ($11.00-$18.00 per square foot vs $5.50-$8.50). On a per-year basis, metal is often cheaper for owners planning to keep the building 20+ years. TPO is the right choice for buildings being held shorter than 15 years or where reflectivity matters more than longevity. Coastal Roofing of Georgia installs both and recommends based on ownership horizon, building type, and slope.

Sometimes — depends on the condition of the existing roof. An acrylic, silicone, or elastomeric coating adds 10-15 years of life to a structurally sound commercial roof at roughly 30-50% of the cost of full replacement. It does NOT replace a failed roof. The existing membrane and insulation must be sound, drainage must be positive, and any wet insulation must be replaced first. We run an IR moisture survey on every coating candidate to confirm the existing assembly is dry before recommending coating over replacement.

For warehouses in Savannah, the two most common commercial roof materials are TPO single-ply (60-80 mil, white reflective surface) and standing-seam metal. TPO is the choice when energy efficiency, short ownership horizon, or initial cost rules. Standing-seam metal is the choice when 40-50 year life, hurricane wind exposure, or the building owner plans to keep the facility long-term. EPDM is a budget alternative for owners prioritizing puncture resistance over reflectivity. Modified bitumen and BUR are uncommon on new warehouse builds in Coastal Georgia today.

Coastal Roofing of Georgia (CRG) installs all seven main commercial roofing materials in Savannah and across the Coastal Georgia region — TPO, PVC, EPDM, standing-seam metal, modified bitumen, built-up roof (BUR), and acrylic/silicone coatings. We provide free assessments with material recommendations based on building type, slope, ownership horizon, and budget. Call (912) 312-0507 to schedule a commercial roof assessment.