Wood shake roof repair is essential for maintaining curb appeal, preventing leaks, and extending the life of a historic or modern home roof. This guide explains common problems, inspection steps, repair options, materials, costs, and maintenance best practices to help homeowners make informed decisions. Practical tips and safety considerations are included to decide when to DIY and when to hire a professional.
| Topic | Quick Take |
|---|---|
| Common Issues | Cracked, cupped, loose shakes; moss, rot, leaks |
| Repair Options | Patching, replacing shakes, flashing repair, re-nailing |
| Materials | Cedar or redwood shakes, stainless steel nails, sealants |
| Typical Cost | $250–$900 for small repairs; $8,000–$25,000 for full replacement |
| DIY vs Pro | DIY for small, safe repairs; pros for complex flashing, steep slopes |
Signs That A Wood Shake Roof Needs Repair
Homeowners should look for visual and performance indicators. Visible cracked, split, or cupped shakes allow water intrusion and accelerate deterioration. Other signs include dark staining, moss or algae growth, sagging roof sections, and water stains on interior ceilings.
Additional indicators are repeated shingle blow-offs after storms, excessive granule loss where applicable, and deteriorated flashings around chimneys, vents, and valleys. Promptly addressing small issues prevents much larger structural damage.
Initial Inspection: What To Check And How
Inspections should be performed at least twice yearly and after severe weather. Start from the ground using binoculars to spot obvious problems. Look for missing or visibly deformed shakes and areas of dark discoloration.
For a closer inspection, use a stable ladder and check for loose shakes, lifted edges, and exposed fasteners. Inspect flashings, ridge caps, valleys, and penetrations. Smell for mustiness in the attic and check for light penetration through the roof deck as indicators of leaks.
Common Repair Techniques
Patching And Replacing Individual Shakes
Small damaged areas are commonly repaired by removing the damaged shake and installing a new one cut to size. Replacement shakes should match the existing profile and thickness for consistent shedding and appearance.
Techniques include using a circular saw to cut along the adjacent shakes, sliding a new shake into place, and securing with stainless steel or hot-dipped galvanized nails. Leave an appropriate expansion gap at the butt end to prevent buckling.
Re-Nailing And Fastener Replacement
Loose or corroded nails reduce wind resistance and water shedding capability. Re-nailing with stainless steel or hot-dipped galvanized nails helps prevent future corrosion and staining. Fasteners should be long enough to engage the sheathing securely without overdriving.
Flashing And Valley Repairs
Flashing failures commonly cause leaks. Repair options include replacing damaged flashing with corrosion-resistant metals like aluminum or copper and ensuring proper integration with shakes. Valley repairs often use a woven or closed metal flashing method for durability.
Applying Treatments And Sealants
Wood preservatives and fungicidal treatments can slow rot and prevent moss. However, sealants that trap moisture can be harmful. Use breathable preservative treatments recommended for shakes and avoid heavy topical coatings that alter the wood’s ability to dry.
Materials And Tools Required
High-quality materials extend repair longevity. Preferred shakes are split cedar or redwood, typically 3/8″ to 1″ thick at the butt, with longer lengths for longer spans. Avoid pressure-treated shakes unless specified by manufacturer and local code.
Essential tools include a pry bar, circular saw, hammer, roofing nails (stainless or hot-dipped), flashing materials, roofing cement compatible with wood, chalk line, safety harness, and ladder. For large jobs, a nail gun rated for roofing may speed work but should be used with care to avoid overdriving fasteners.
Cost Factors And Budgeting
Repair costs depend on extent of damage, roof pitch, access, materials, and local labor rates. Small localized repairs typically run $250–$900 depending on material and labor complexity. Full roof replacement costs scale by square footage and complexity.
Complete replacement of a wood shake roof averages from $8,000 to $25,000 for typical homes in the U.S., with premium materials and complex rooflines raising the total. Budget additional funds for underlayment, flashing upgrades, and permit or disposal fees.
When To DIY And When To Hire A Professional
DIY repairs suit small, low-risk jobs on single-story homes with safe ladder access. Homeowners with carpentry skills can replace a few shakes and re-nail loose boards.
Hire a licensed roofing contractor when the repair involves flashing, valleys, roof penetrations, steep pitches, structural deck concerns, or when widespread rot is present. Pros can ensure correct installation of underlayment, flashing integration, and warranty coverage.
Safety And Code Considerations
Safety is essential. Use fall protection for steep roofs, have a helper, and keep tools secured. Follow Occupational Safety standards and local building codes for roofing work, especially when installing or repairing flashing and structural components.
Many jurisdictions restrict or specify materials and installation methods for wood roofing due to fire ratings. In some areas, treated or fire-retardant shakes may be required. Verify local code requirements and obtain necessary permits before major work.
Preventive Maintenance To Extend Roof Life
Regular maintenance extends wood shake life and reduces the need for major repairs. Recommended steps include annual inspections, removing moss and debris, trimming overhanging branches, and ensuring gutters are clear. Good attic ventilation and insulation control moisture and prolong shakes.
Periodically replace worn underlayment and maintain flashings. Consider strategic application of wood preservatives on shaded or moisture-prone areas, following manufacturer guidance to avoid trapping moisture.
Choosing The Right Contractor And Warranties
Select contractors with experience in wood shakes. Request references, proof of insurance, and examples of completed projects. Ask about manufacturer or workmanship warranties and get a written estimate outlining scope, materials, and timeline. Clear warranty terms protect homeowners from premature failures.
Compare at least three bids and evaluate contractor familiarity with local code and best practices for shake installation and repair. Verify that the contractor uses corrosion-resistant fasteners and appropriate flashing materials.
Frequently Asked Questions
How Long Do Wood Shake Roofs Last?
With proper maintenance, cedar and redwood shakes can last 30 to 50 years in favorable climates. Lifespan shortens with poor ventilation, high humidity, or lack of maintenance.
Can Moss Be Removed Without Damaging Shakes?
Yes. Use gentle methods: soft-bristle brushes, low-pressure washing, and recommended moss treatments. Avoid power washing at high pressure because it can erode the wood surface and shorten shake life.
Is It Worth Repairing Or Replacing?
Repair is cost-effective for localized damage or when the majority of the roof is in good condition. Replace when widespread rot, repeated leaks, or structural issues exist. Consider long-term costs and energy impacts when deciding.
Resources And Further Reading
Homeowners should consult authoritative resources for code, materials, and installation standards. Useful sources include local building departments, the Cedar Shake And Shingle Bureau, and manufacturer installation guides. Consulting these resources helps ensure code compliance and best practices.
For complex repairs, request a detailed inspection report from a qualified roofing contractor, including photos and recommended remediation steps to support informed decisions and insurance claims if applicable.