Ensuring Proper Installation of Self-Adhered Underlayment Over Full Decks with Unvented Attics

Understanding the Importance of Proper Installation Self-adhered underlayments play a crucial role in roofing systems by providing a waterproof layer and sealing around fastener penetrations from mechanically fastened underlayment. However, when applied incorrectly, particularly over full decks with unvented attics, these materials can cause significant moisture-related issues. Key Issues with Unvented Attics When self-adhered underlayment…

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Roof Deck Requirements for Installing Asphalt Shingles: Owens Corning Guidelines

Understanding Roof Deck Requirements Proper roof deck preparation is crucial for the successful installation of asphalt shingles. Owens Corning outlines specific requirements to ensure the integrity and longevity of their asphalt shingles. This technical bulletin addresses the necessary conditions and limitations for roof decks, particularly those involving spaced sheathing or deck boards. Key Requirements for…

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Re-Using Existing Flashing with Owens Corning® Extended Warranties

Understanding the Use of Existing Flashing in Roofing Projects In roofing projects, particularly those involving Owens Corning® Extended Warranties, the condition and quality of flashing are critical. Flashing is a key component in protecting vulnerable areas of the roof, such as chimneys, valleys, and wall intersections. This technical bulletin outlines the guidelines for re-using existing…

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Re-Roofing Over an Existing Layer of Self-Adhered Ice Dam Protection: Owens Corning’s Recommendations

Understanding Re-Roofing Over Ice Dam Protection Re-roofing projects often encounter existing self-adhering ice dam protection underlayment at the eaves. Removing this underlayment can be challenging and may cause damage to the roof sheathing. Owens Corning provides detailed procedures to handle this situation effectively, ensuring the integrity of the roof. Key Recommendations for Re-Roofing Option A:…

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