Preparation includes a clean, dry, sound deck, suitable weather and carefully handled rolls. Owens Corning covers relaxing the material, edge sequencing, surface contact and product-specific end-lap treatment
Owens Corning technical bulletin: Self-Adhered Underlayment Tech Bulletin.
What this means for your roof
Preparation includes a clean, dry, sound deck, suitable weather and carefully handled rolls. Owens Corning covers relaxing the material, edge sequencing, surface contact and product-specific end-lap treatment. Wrinkles, bubbles or damaged sheets need attention before the roof covering conceals them.
A useful question for your contractor
Ask to see the underlayment installation before shingles cover its laps, edges and repaired areas.
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: February 2023. The date shown identifies the manufacturer document used for this summary.
Read Owens Corning: Self-Adhered Underlayment 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.