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RV shops quote roof replacements by the linear foot of the coach. A1 RV Repair's 2026 comparison (updated May 2026) prices a full membrane replacement on a 30 ft RV at $3,500–$6,800 for EPDM rubber, $3,800–$7,500 for TPO, $8,500–$16,500 for fiberglass and $5,500–$9,500 for aluminum, and adds $1,200–$4,500 when the substrate under the membrane has rotted. The RV Roof Replacement Cost Calculator divides those prices by 30 ft and multiplies by your length — about $117–$227 per foot for EPDM and $127–$250 for TPO. Alongside it shows a full tear-off with new luan decking at about $350 per linear foot, the figure At Your Door RV Service gives from an itemised 40 ft job of about $2,000 in materials and 77 hours of labor at $150 an hour. A 30 ft trailer with EPDM and soft decking comes to $4,700–$11,300; a full reroof reference is $10,500.
A1 RV Repair’s roof comparison (a1rvrepair.com, updated May 2026) prices a full membrane replacement on a 30 ft coach; dividing by 30 gives a price per linear foot. Rotten substrate adds $1,200–$4,500. At Your Door RV Service (atyourdoorrvservice.com) puts a full tear-off with new decking at about $350 per linear foot.
| Length | EPDM rubber | TPO | Fiberglass | Aluminum | Full reroof |
|---|---|---|---|---|---|
| 20 ft | $2,333–$4,533 | $2,533–$5,000 | $5,667–$11,000 | $3,667–$6,333 | $7,000 |
| 25 ft | $2,917–$5,667 | $3,167–$6,250 | $7,083–$13,750 | $4,583–$7,917 | $8,750 |
| 30 ft | $3,500–$6,800 | $3,800–$7,500 | $8,500–$16,500 | $5,500–$9,500 | $10,500 |
| 35 ft | $4,083–$7,933 | $4,433–$8,750 | $9,917–$19,250 | $6,417–$11,083 | $12,250 |
| 40 ft | $4,667–$9,067 | $5,067–$10,000 | $11,333–$22,000 | $7,333–$12,667 | $14,000 |
| 45 ft | $5,250–$10,200 | $5,700–$11,250 | $12,750–$24,750 | $8,250–$14,250 | $15,750 |
A1 RV Repair (May 2026) prices a full membrane replacement on a 30 ft coach at $3,500–$6,800 for EPDM rubber, $3,800–$7,500 for TPO and $8,500–$16,500 for fiberglass. Rotten decking adds $1,200–$4,500. A full tear-off with new luan decking runs about $350 per linear foot at At Your Door RV Service — $10,500 for 30 ft.
Shops quote by the linear foot of the RV. A1 RV Repair's 30 ft figures work out to about $117–$227 per foot for EPDM, $127–$250 for TPO and $283–$550 for fiberglass, membrane only. At Your Door RV Service puts a full reroof with new decking at about $350 per foot.
TPO costs a little more ($3,800–$7,500 against $3,500–$6,800 on a 30 ft coach), reflects more heat and has heat-welded seams; A1 RV Repair gives it a 12–18 year life against 10–15 for EPDM. EPDM is cheaper and suits temperate and cold climates. Either needs its seams and fixtures resealed every few years.
A1 RV Repair's 2026 table: TPO 12–18 years, EPDM 10–15, fiberglass 18–25 and legacy aluminum 25–40, with full reseals every 5–7 years on membranes and a recoat every 8–12 years on fiberglass. Missed reseals are what turn a membrane job into a decking job.
Yes, if you can work safely on the roof and have the time: the cost is mostly labor. At Your Door RV Service's itemised 40 ft job is about $2,000 in materials and 77 hours of labor. Budget for sealants, adhesive, new decking where it is soft, and a dry place to work.
Recoating instead of replacing? The roof coating calculator works out gallons of elastomeric coating.
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