Flat roofs are becoming more popular in homes due to their modern look and potential cost savings in installation. On average, repairing a flat roof costs about $700. However, depending on the complexity of the job, costs can range from $300 to $1,100. Also visit website
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- Repair Costs: The average repair cost for a flat roof is $700, but it can vary from $300 to $1,100 based on the difficulty of the repair.
- Material Costs: The choice of materials affects the price. Black and white EPDM are more expensive than bitumen or glass-reinforced polyester.
- Labor Costs: Labor is the most significant expense, making up about 70% of the total repair cost.
What Is a Flat Roof?
A flat roof is designed with a minimal slope to keep the building dry. It uses special waterproofing techniques and materials like modified bitumen or single-ply membranes. Although it looks flat, a slight slope is always present to ensure water drainage.
Average Repair Costs:
- Average Cost: $700
- Highest Cost: $1,100
- Lowest Cost: $300
Costs Based on Size:
- 25 square feet: $163 (average), $250 (high), $75 (low)
- 50 square feet: $325 (average), $500 (high), $150 (low)
- 200 square feet: $1,300 (average), $2,000 (high), $600 (low)
- 500 square feet: $3,250 (average), $5,000 (high), $1,500 (low)
Costs by Repair Type:
- Drip edge repair: $200 to $450
- EPDM or modified bitumen membrane repair: $250 to $1,650
- Fixing loose seams: $200 to $550
- Fixing large sags: $800 to $2,200
- Removing the entire roof: $1,600 to $5,500
Costs by Material Type:
- Black EPDM: $6 to $14 per square foot
- White EPDM: $8 to $18 per square foot
- Modified Bitumen: $5 to $9 per square foot
- GRP (Glass Reinforced Polyester): $5 to $7 per square foot
- Fiberglass: $5 to $7 per square foot
Installation Costs: Installing a flat roof costs between $4,500 and $14,000 for 1,000 square feet, with an average cost of $9,250.
Labor Costs: Labor constitutes up to 70% of the total repair cost. You can expect to pay $50 to $80 per hour for a professional roofer.
Repair Methods and Costs:
- Patches and paint: $150 to $1,000
- Resurfacing: $300 to $1,200
- Torching down modified bitumen: $375 to $3,200
DIY vs. Professional Repair: For major repairs, hiring a professional is recommended. However, simple spot repairs might be manageable for DIYers. Professional repair costs are comparable to the cost of materials and tools for a DIY job, which is around $50 for about 10 to 12 square feet of repair.
Repairing a flat roof involves various factors including the type of repair, the materials used, and labor costs. While the average repair cost is around $700, it can vary widely based on specific needs and materials. For minor repairs, a DIY approach might be feasible, but for more extensive issues, professional help is generally more effective. Understanding these aspects will help homeowners make informed decisions about maintaining or repairing their flat roofs.
