Installing new shingles on a roof requires careful consideration of the substrate to ensure long-term performance and adherence to local building codes. One common query involves using OSB (Oriented Strand Board) sheathing over existing deck boards. Here’s what you need to know about this installation method and how it impacts the use of Atlas shingles.
Understanding the Use of OSB Over Deck Boards
Atlas has approved the use of OSB sheathing that is placed on top of and mechanically fastened to existing deck boards. This method can serve as a suitable substrate for attaching Atlas shingles as part of a complete roof system. When installed correctly, this setup should not negatively affect the performance of the shingles.
Compliance with Local Building Codes
It is crucial to ensure that any deviations from manufacturer’s instructions meet local building codes. Approval from the local building department should be obtained to confirm that the deck construction complies with local requirements. This step is essential to avoid any compliance issues that could affect the validity of your roof installation.
Warranty Considerations
If a manufacturing defect occurs that is not related to the double roof decking, the resolution will be in accordance with the terms of Atlas’s Limited Shingle Warranty. However, Atlas does not warrant the installation method of OSB over deck boards and will not cover deficiencies in the product, performance of the decking, or problems with the shingles caused by the deck or substrate.
Importance of Following Manufacturer’s Instructions
Atlas’s correct application instructions for shingle products are clearly stated on all product bundle wrappers and should be followed for optimum performance. Deviations from these instructions can lead to performance issues and may void warranty coverage for related problems.
Key Points to Consider:
- Suitable Substrate: OSB sheathing over existing deck boards can be a suitable substrate for Atlas shingles.
- Local Code Compliance: Ensure approval from the local building department to confirm the deck construction meets local codes.
- Warranty Limitations: Atlas does not warrant the installation method of OSB over deck boards.
- Follow Instructions: Adhere strictly to Atlas’s application instructions for optimal shingle performance and warranty protection.
Conclusion
Using OSB over deck boards is a viable method for re-roofing with Atlas shingles, provided it meets local building codes and is installed correctly. Always follow the manufacturer’s instructions to ensure the best performance and to maintain warranty coverage.
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Disclaimer: This article is intended for informational purposes only. For professional advice, consult experts in the field.
