Home Repair Estimate: 2 Car Garage Roof Replacement Cost
- Redfield Contracting
- Aug 23
- 4 min read
Replacing the roof of your 2-car garage is no small task, but it’s one of the best ways to protect your garage’s structure and everything inside. Whether it’s worn out from age or damaged by storms, knowing the potential cost is essential for smart planning and budgeting.
This guide explains the key factors affecting price, shares national averages, and provides estimates for a typical 2-car garage so you can better understand your roof replacement cost.
Average Size of a 2-Car Garage
Before discussing costs, it helps to know the typical size of a 2-car garage. Most measure around 20×20 feet (about 400 sq. ft.), though larger ones can reach 24×24 feet (576 sq. ft.). Because of the roof pitch, the actual surface area is greater—usually 440 to 760 sq. ft.—so estimates account for this added coverage.
Key Factors Influencing Roof Replacement Costs
The total cost of replacing a 2-car garage roof can vary widely based on several elements, including:
Roofing material (e.g., asphalt shingles, metal, tile, etc.)
Pitch of the roof (steeper roofs require more labor)
Existing roof condition (removal of old materials, repairs, etc.)
Local labor rates (rates fluctuate geographically)
Permit fees (if required by your area). Read more about permits in thig blog
Understanding these variables will help you fine-tune your estimate and avoid surprises during the project.
National Average Costs of Roof Replacement
Now, let's discuss the nationwide averages for roof replacement. According to industry data, the cost per square foot to replace a garage roof typically ranges from $5 to $10, depending on factors like materials and labor. For a 2-car garage, this can result in a variety of price points based on your roof’s size and slope:
Flat roof (400 sq. ft.) Estimate: $2,000 to $4,000
Moderate slope roof (500 sq. ft.) Estimate: $2,500 to $5,000
Steep slope roof (760 sq. ft.) Estimate: $3,800 to $7,600
To provide a more detailed breakdown, here’s a look at the impact of various roofing materials on costs.
Roofing Materials and Their Cost Implications
The choice of roofing material significantly influences your overall expenses. Here’s a look at the most common options:
1. Asphalt Shingles
Widely regarded as the most cost-effective material, asphalt shingles are popular for their affordability and durability.
Cost per square foot (installed): $4 to $7
Total for 2-car garage (400–760 sq. ft.): $1,600 to $5,320
2. Metal Roofing
Metal roofs are more expensive upfront but offer exceptional durability and energy efficiency.
Cost per square foot (installed): $10 to $15
Total for 2-car garage (400–760 sq. ft.): $4,000 to $11,400
3. Clay or Concrete Tiles
Tiles provide a high-end look and excellent longevity, but they require professional installation.
Cost per square foot (installed): $14 to $20
Total for 2-car garage (400–760 sq. ft.): $5,600 to $15,200
4. Cedar Shakes
Cedar adds a rustic appearance and significant resale value but comes with higher costs.
Cost per square foot (installed): $10 to $14
Total for 2-car garage (400–760 sq. ft.): $4,000 to $10,640
5. Flat Roof Options (e.g., TPO, Rubber Membranes)
If your garage has a flat roof, specialized materials like TPO or rubber are ideal.
Cost per square foot (installed): $5 to $9
Total for 2-car garage (400–760 sq. ft.): $2,000 to $6,840
Additional Costs to Consider
Beyond the base replacement costs, additional expenses often arise during roof replacement projects. Some of the most common include:
Roof Deck Repair or Replacement: If the underlying decking is damaged, repairs may range from $1 to $3 per square foot, adding $400 to $2,280 for a 2-car garage.
Tear-Off Costs: Removing old roofing material typically adds around $1 to $5 per square foot, or $400 to $3,800 for a 2-car garage.
Permit Fees: Depending on your municipality, permits can cost anywhere from $100 to $500+.
Ventilation Installation: Adding or replacing roof vents generally costs $300 to $700, but can improve energy efficiency and prolong roof lifespan.
DIY vs. Professional Installation
If you’re considering DIY roof replacement, be aware of the challenges and risks. While a DIY approach may save on labor costs, the savings often come at the expense of increased time, complexity, and potential errors.
DIY Materials-Only Cost: $2,000 to $5,000 for basic shingles on a 2-car garage.
Professional Installation Cost: $3,000 to $15,000+, depending on materials and job complexity.
Hiring professionals ensures proper roof installation, warranty coverage, and long-term durability. For most homeowners, professional installers provide better peace of mind and value.
Tips for Saving on Your Garage Roof Replacement
Though the costs may seem overwhelming, there are several ways to save money without sacrificing quality. :
Get at Least 3 Quotes: Collect multiple estimates to compare pricing and services.
Time Your Project Carefully: Prices are often lower in the off-season (late fall or winter).
Choose Cost-Effective Materials: Asphalt shingles are a reliable, budget-friendly option.
Bundle Repairs: If your home also needs roof work, bundling projects can offer discounts.
We created a separate discussion about the cost of a residential roofing contractor service. Read it here!
Final Thoughts on 2 Car Garage Roof Replacement Costs
Replacing the roof on your 2-car garage is an important investment that ensures long-term functionality and protects your assets. While the cost depends on factors like size, materials, and local labor rates, understanding the general price range outlined above can simplify your planning process.
Perform your due diligence by gathering multiple quotes, evaluating cost-effective materials, and hiring a reputable professional. By balancing budget with quality, you’ll enjoy a durable and visually appealing roof that stands the test of time. Talk to an expert today!