What Is Asphaltic Oil Staining?
Asphaltic oil staining refers to the appearance of dark-colored oils on the granules of shingles, which can cause a temporary darker visual appearance. This phenomenon is purely cosmetic and does not affect the performance of the shingles.
Causes of Asphaltic Oil Staining
Asphaltic oils are naturally present in all asphalts. The staining does not occur during the manufacturing process but can develop during storage, especially when shingles are stored in hot conditions or for extended periods.
What NOT To Do When Dealing with Oil Staining
- Do not rinse the roof from the ground with a hose:
- This can drive water under the shingles, potentially causing damage.
- Avoid rinsing from the roof top:
- Wet roofs are slippery, and this method is not safe. It’s best to allow the staining to rinse off naturally.
- Do not use high-pressure sprays:
- High pressure can damage the shingles.
- Avoid chemical washes:
- Chemicals can loosen the granule surfacing or damage the asphaltic coating.
Impact on Shingles and Warranty
Will the Oil Staining Damage the Shingles?
No, asphaltic oil staining is a cosmetic issue that does not affect the performance or long-term appearance of the shingles. Once the staining has weathered out naturally, the shingles’ original color will be restored.
Does Asphaltic Oil Staining Affect the Warranty?
No, the GAF Shingle Limited Warranty remains in effect despite the presence of asphaltic oil staining.
Minimizing the Possibility of Oil Staining
- Stock Rotation:
- Use a “first-in, first-out” stock rotation policy to minimize storage time.
- Proper Storage:
- Follow GAF’s recommendations for proper shingle storage to prevent staining. Refer to Technical Advisory Bulletin TAB-R-122 for detailed guidelines.
- Date Code Management:
- To avoid immediate callbacks due to staining, install bundles with date codes as close together as possible. Refer to Technical Advisory Bulletin TAB-R-129 for more information.
Conclusion
Asphaltic oil staining on new shingles is a temporary and cosmetic issue that does not impact the shingles’ performance or warranty. By following proper storage practices and allowing the staining to weather out naturally, homeowners can ensure their shingles maintain their intended appearance and functionality.
For Immediate Service or Consultation
Contact Allied Emergency Services, INC.
Phone: 1-800-792-0212
Email: Info@AlliedEmergencyServices.com
Location: Serving Illinois, Wisconsin, and Indiana with a focus on the greater Chicago area.
If you require immediate assistance or have specific questions, our human support is readily available to help you.
Disclaimer: This article is intended for informational purposes only. For professional advice, consult experts in the field.
