Most homeowners pay $2,400–$6,000 to replace a garage roof, with a national average of about $4,000. Expect $4–$11 per sq. ft. installed for non-premium materials; a 1-car garage runs about $1,500–$4,000 and a 3-car garage $3,200–$8,000 (Angi and HomeGuide data, as of October 2026).
Updated October 8, 2026. Source: Angi + 3 more. National US estimates.
Detached garages often get a new roof on a different schedule from the house, and attached garages under a separate roof plane may too. Missing shingles, a sagging ridge, daylight through the deck or a leaking flat roof are the usual triggers.
Below are 2026 prices by garage size, material and pitch, plus a line-item budget. If the garage shares one continuous roof with the house, it's usually cheaper to price it with the main roof; see our roof replacement cost guide or the roof replacement cost calculator.
Average cost
Typical installed totals for a garage roof replacement, including tear-off, national averages as of October 2026:
| Scenario | Typical range | Notes |
|---|---|---|
| 1-car garage (about 250–350 sq. ft. of roof) | $1,500–$4,000 | Asphalt shingles or a simple membrane roof |
| 2-car garage (about 500–600 sq. ft. of roof) | $2,400–$6,000 | Most common project; average near $4,000 |
| 3-car garage, or premium materials (metal, tile) | $3,200–$8,000+ | Larger roof area; standing seam or tile at the high end |
Garage roof cost by roof size
| Roof area | Typical installed cost |
|---|---|
| 200 sq. ft. | $800–$2,200 |
| 300 sq. ft. | $1,200–$3,300 |
| 400 sq. ft. | $1,600–$4,400 |
| 500 sq. ft. | $2,000–$5,500 |
| 600 sq. ft. | $2,400–$6,600 |
| 650 sq. ft. | $2,600–$7,150 |
Garage roof cost by material
| Material | Installed per sq. ft. |
|---|---|
| Asphalt shingles | $3–$9 |
| Rubber/EPDM membrane (flat roofs) | $4–$14 |
| Composite shingles | $4–$14 |
| Metal (exposed fastener to standing seam) | $7–$16 |
| Wood shakes | $6–$13 |
| Clay tile | $10–$25 |
Cost breakdown: materials, labor, permits and extras
Line-item estimate for replacing the roof on a detached 2-car garage (about 500 sq. ft. of roof) with architectural asphalt shingles. Ranges are national, as of October 8, 2026.
| Cost item | Typical range | What it covers |
|---|---|---|
| Shingles (materials) | $500–$1,250 | About 5 squares at $100–$250 per square, plus ridge and starter |
| Underlayment and drip edge | $50–$400 | Synthetic underlayment at $0.10–$0.80 per sq. ft. |
| Installation labor | $750–$1,500 | About $150–$300 per square |
| Tear-off and disposal | $500–$1,500 | $100–$300 per square; hauling alone averages about $400 |
| Permits & inspections | $50–$500 | Many towns require one even for detached garages |
| Contingency: decking repairs | $150–$1,000 | Garages often have rotted sheathing at the eaves |
| Estimated total | $2,000–$6,200 | Before any discounts or rebates |
Small roofs carry relatively high per-square costs because setup, dumpster and minimum charges are spread over fewer squares.
What affects the price
- Size. Garage roofs typically range from about 200 to 650 sq. ft. At $4–$11 per sq. ft., that's roughly $800–$7,150. A 2-car garage averages about $2,400–$6,000.
- Material. Asphalt shingles cost about $3–$9 per sq. ft. installed and are the usual choice to match the house. Metal runs $7–$16, rubber membrane on flat garage roofs $4–$14, and clay tile up to $25.
- Pitch. Simple flat or low-pitch garage roofs are the cheapest to replace. Steep roofs, multiple angles, valleys or dormers need more safety equipment and labor time.
- Tear-off of old layers. Removal costs about $100–$300 per square when itemized, and hauling the debris averages about $400; a week-long dumpster rental runs about $293–$479. A full tear-off is recommended over an overlay so rotted decking gets fixed.
- Permits. Many municipalities require a permit even for detached garages. Fees typically run $50–$500, and contractors usually include them in the quote.
Ways to save
- Get at least three written quotes that list the same material, underlayment, tear-off and disposal so you can compare like for like.
- Re-roof the garage at the same time as the house when both are due; you avoid a second setup and dumpster fee and the materials match.
- Use architectural asphalt shingles or exposed-fastener metal instead of standing seam or tile on a detached garage that doesn't need to match a premium house roof.
- Ask for a fixed per-sheet price for decking replacement in the contract.
- If you're comfortable hauling debris yourself, ask whether the contractor will discount the price without the dumpster, but leave the roof work itself to the pros.
How to get an accurate quote
Ask at least three licensed, insured roofers for written quotes. Give each the same information:
- Garage size (1-, 2- or 3-car), roof area if known, pitch, and whether it is attached or detached.
- The material you want and whether it must match the house roof.
- Current roof layers and any leaks, sagging or rot.
- Ask what is included: tear-off, disposal, underlayment, drip edge, flashing against the house wall, permits and the workmanship warranty.
FAQ
How long does it take to replace a garage roof?
Most 1- and 2-car garage roofs are replaced in a single day. Rotted decking, metal panels or tile can add a day or two.
Do I need a permit to replace a garage roof?
Often yes, even for a detached garage. Fees typically run $50–$500, and most roofers pull the permit for you.
Can I repair the garage roof instead?
If damage is limited to a few shingles or one leak, a repair usually costs far less. See our roof repair cost guide to compare.
For the big picture, start with our complete roof replacement cost guide.
Related cost guides
Sources
- Angi — How Much Does It Cost to Replace a Garage Roof? (updated Jul 9, 2026). Checked October 8, 2026.
- HomeGuide — How much does garage roof replacement cost? (2026) (Jan 31, 2026). Checked October 8, 2026.
- HomeGuide — How Much Does a Roof Replacement Cost? (2026) (Nov 7, 2025). Checked October 8, 2026.
- Fixr — How Much Does an Asphalt Shingle Roof Cost in 2026? (updated Jan 21, 2026). Checked October 8, 2026.
Prices are estimates and vary by location and provider. See our methodology and editorial policy. Browse all exterior cost guides.