The Tamko Do Not Mix Letter outlines guidelines for installing Tamko roofing shingles without mixing different product lots, colors, or types. This guidance helps prevent color mismatches, warranty issues, and potential performance problems. Homeowners and contractors can use this letter to improve installation quality, ensure warranty coverage, and prolong roof life by maintaining consistency across the entire roof run.
What Is The Tamko Do Not Mix Letter?
The Tamko Do Not Mix Letter is an official communication from Tamko Roofing Products that cautions against mixing shingles from different production runs, colors, or product lines on a single roof. It explains why consistency matters for color match, sealant performance, and wind resistance. The letter also provides recommended practices for ordering, storage, and installation to minimize discrepancies that could impact performance or warranty eligibility.
Why Mixing Shingles Can Be Problematic
Mixing shingles from different lots or colors can lead to visible color variations, which some homeowners find unsightly. Beyond aesthetics, differences in batch composition may affect warranty coverage, as Tamko and many manufacturers require uniform materials for the entire roof. Variations can also influence shingle alignment, seal strength, and wind uplift resistance, potentially creating gaps or leaks over time.
How To Identify Do Not Mix Situations
Identify potential mixing scenarios by reviewing order details, packaging, and lot codes on each pallet. When multiple pallets are needed, require the same lot when possible. Check color codes and product lines to ensure compatibility. If a project must use multiple shipments, consult Tamko’s guidelines or contact the distributor to confirm whether mixing is permissible for a specific application and what precautions are required.
Best Practices For Installation
- Order Consistency: Whenever feasible, source shingles from the same lot and color family to ensure uniform appearance and performance.
- Storage And Handling: Store shingles flat in a shaded, dry area and avoid exposing them to extended direct sunlight before installation, which can alter color and adhesive performance.
- Inventory Management: Plan ahead to minimize the need to mix lots. If a match cannot be found, consider alternate color options or a complete re-order for consistency.
- On-Site Verification: Before installation, verify color match and batch information on every bundle. Set aside any potentially incompatible bundles for a separate, isolated area.
- Warranty Implications: Document material lots and colors used on the roof, and follow Tamko’s guidance to preserve warranty eligibility.
Warranty Implications And Guidance
Tamko warranties often require uniform roofing materials across the entire roof to maintain coverage. Mixing different colors or lots can void portions of the warranty if the variation contributes to leaks, seal failures, or cosmetic concerns. To minimize risk, document material sources, maintain consistent product lines, and adhere to installation guidelines stipulated in Tamko’s warranty documentation and the Do Not Mix Letter. If a mismatch occurs, contact Tamko support to determine if any exception or remediation steps are available.
Practical Steps For Homeowners And Contractors
- Review the Do Not Mix Letter and any current Tamko warranty terms before starting a project.
- Coordinate with suppliers to obtain shingles from a single lot and color family whenever possible.
- Create an installation plan that assigns a single lot to contiguous sections of the roof to reduce the risk of visible differences.
- Label and segregate bundles by lot and color on the job site to prevent cross-use of incompatible materials.
- Keep comprehensive records of material sources, lot numbers, and installation dates for warranty support.
FAQs On Tamko Do Not Mix Guidance
Q: Can I mix Tamko shingles from two different colors on the same roof? A: Mixing colors is generally discouraged and may affect warranty eligibility and appearance. Check the Do Not Mix Letter and Tamko’s guidance for your specific products.
Q: What should I do if a color match is not available? A: Contact the supplier or Tamko to discuss alternatives, such as selecting a closely matched color or reordering to ensure consistency.
Q: Does Do Not Mix apply to all Tamko products? A: The guidance typically covers common residential shingles, but always verify with Tamko documentation for your product line.
Conclusion
The Tamko Do Not Mix Letter serves as a practical reference to help homeowners and contractors achieve consistent aesthetics, reliable performance, and full warranty protection. By prioritizing uniform materials, proper handling, and adherence to Tamko’s guidelines, roof installations can avoid common issues associated with mixing shingles from different lots or colors.