The TAMKO warranty covers defects. Maintenance covers the rest.
You install TAMKO, and the warranty helps you sell the roof. But the TAMKO shingle limited warranty and DiamondShield cover manufacturing defects. TAMKO also lists the damage it doesn’t cover, and most of that list is exactly what a maintenance visit catches. That gap is a reason for every homeowner you’ve roofed to keep you around.
What the TAMKO warranty doesn’t cover
- Inadequate ventilation. Shingles installed without it aren't covered.
- Roof traffic and impact. Damage from either isn't covered.
- Ice damming. Leaks or damage from it aren't covered.
- Algae, moss and overhanging trees, and damage from chemicals like solvents and oils. Algae has its own limited cleaning coverage.
TAMKO's Algae Cleaning Limited Warranty helps pay the labor to clean significant algae staining in the first 120 months, reduced after the first year. It's worth knowing on a younger TAMKO roof.
None of that is a manufacturing defect. Most of it builds slowly, out of sight from the ground, and the homeowner finds out when something leaks.
What TAMKO recommends
- Seasonal checks in spring, fall and before winter. TAMKO doesn't publish a set schedule, but it recommends a professional inspection, especially for older, steep or hard-to-reach roofs.
- A professional inspection before winter, which TAMKO calls one of the most important steps, checking for missing shingles, cracked flashing, water getting in and ventilation problems.
- Homeowners check only from the ground, and let a qualified roofer make any repairs.
- Ventilation matters. TAMKO notes that blisters are often a direct result of underventilated attics.
One thing to get right: DiamondShield doesn't add any maintenance, inspection or record-keeping requirements. TAMKO's guidance is a recommendation, not a warranty condition, and every season it points the homeowner back to a professional.
Why this matters to your company
- Every TAMKO roof you’ve installed is a homeowner who’s been told the warranty has them covered. It covers defects. A yearly visit from the company that put the roof on covers the rest.
- Ask the homeowner who maintains their roof. For most, the answer is nobody. That’s not a problem with the roof; it’s an open door.
- About 94 of every 100 homeowners won’t replace their roof this year. Every one of them still has a roof that needs maintenance.
- Recurring revenue changes what your company is worth. Home-service businesses with recurring maintenance sell for 4 to 6 times earnings, compared with 2 to 4 times for project-based ones.
Turn every TAMKO roof into a customer for life
ReMember helps roofing companies run a Roof Maintenance Program under their own name. In a free 30-minute session, Joe walks through what it would look like in your company and tells you straight whether it fits.
Book Free SessionSources
- TAMKO Fiberglass/Asphalt Shingle Limited Warranty (2025)
- TAMKO DiamondShield Enhanced Limited System Warranty
- TAMKO: Is Your Roof Ready for Spring?
- TAMKO: Fall Roof Maintenance
- TAMKO: Winter Roof Maintenance Tips
- TAMKO: How to Read Your Roof
ReMember isn’t affiliated with TAMKO. This page summarizes TAMKO’s published warranty and homeowner guidance; the warranty itself sets coverage. The valuation range is from the OffDeal valuation guide.