Question: how much does it cost to replace a single garage flat roof?
Answer: TPO & EPDM roofing – being the cheapest roofing materials for flat roofs – have a similar lifespan to that of asphalt roofing shingles (used on sloped roofs) of 25 to 30 years. Cost-wise, they go for approximately $8.25 to $10.45 per square foot.