How much does it cost to get a roof resealed?
Resealing a roof typically costs between $500 to $2,500, with most homeowners paying around $1,200. The cost varies significantly based on roof size, type of sealant used, roof pitch, and the extent of areas requiring resealing.
Roof Resealing Cost by Project Type
- Flat roof resealing (full) – $1,000-$3,000 (complete coating application)
- Flashing and penetration sealing – $300-$800 (vents, chimneys, skylights)
- Valley and seam sealing – $400-$1,200 (metal roof seams or shingle valleys)
- Entire sloped roof coating – $1,500-$4,000+ (depends on square footage)
- Minor spot sealing – $200-$500 (small problem areas)
Types of Roof Sealants and Coatings
- Silicone sealant – Excellent for metal roofs and flashing
- Acrylic coating – UV-resistant, good for flat roofs
- Polyurethane foam – Provides insulation and waterproofing
- Elastomeric coating – Flexible rubber-like coating for various roof types
- Asphalt-based sealant – Traditional option for flat and low-slope roofs
When to Consider Roof Resealing
Resealing is often recommended for flat roofs, metal roofs, or as a maintenance measure when:
- The roof shows minor wear but doesn’t need full replacement
- You want to extend the life of an aging roof by 5-10 years
- There are small leaks around penetrations or seams
- The existing sealant has deteriorated or cracked
Roof resealing is a cost-effective preventive measure that can significantly extend roof life. However, it’s not appropriate for severely damaged roofs. A professional inspection can determine if resealing is suitable for your situation.