Owens Corning lists approved substrates for DeckSeal self-adhering base and cap sheets, including specific wood, insulation and cover-board conditions. Unlisted surfaces are not approved by this bulletin
Owens Corning technical bulletin: DeckSeal Suitable Substrates Tech Bulletin.
What this means for your roof
Owens Corning lists approved substrates for DeckSeal self-adhering base and cap sheets, including specific wood, insulation and cover-board conditions. Unlisted surfaces are not approved by this bulletin. Radiant-barrier decking receives a separate caution and recommendation for a mechanically fastened base sheet.
A useful question for your contractor
Ask for the complete DeckSeal assembly and substrate condition to be specified before work begins.
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin dated: August 2023. The date shown identifies the manufacturer document used for this summary.
Read Owens Corning: DeckSeal Suitable Substrates Tech Bulletin
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.