Commercial Roof Type Identifier

TPO is typically white or light gray with visible heat-welded seams and a smooth, slightly glossy surface. EPDM is typically black (though white-coated versions exist) with taped or adhesive-bonded seams and a matte rubber texture. From the ground you'll rarely see seam details - but color and any visible roof edge can help. An on-site inspection is the only definitive method.

Yes. Carriers factor material type, expected lifespan, and current age when calculating ACV vs RCV settlements. TPO and EPDM age differently, and a carrier's depreciation schedule reflects that. Knowing your system before an adjuster visit lets you verify their assessment rather than simply accepting it.

Repair is typically appropriate when damage is localized to less than 25% of the roof area and the membrane is within its expected service life. Replacement is typically better when the membrane is at or past expected service life, when damage is widespread, or when an insurance carrier is covering storm damage - since full replacement may be no more expensive out-of-pocket than a major repair that won't extend carrier eligibility.