Malarkey warns that stacking weight, heat and prolonged exposure can deform shingles, stain them or make bundles stick together. It recommends orderly stock rotation and careful separation of shingles
Malarkey technical bulletin: Storage and Handling of Asphalt Shingles.
What this means for your roof
Malarkey warns that stacking weight, heat and prolonged exposure can deform shingles, stain them or make bundles stick together. It recommends orderly stock rotation and careful separation of shingles. Damaged material should not be installed simply because it arrived in a new bundle.
A useful question for your contractor
Ask how bundles will be stored and how damaged or distorted shingles will be identified before installation.
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 edition: October 2020. The date shown identifies the manufacturer document used for this summary.
Read Malarkey: Storage and Handling of Asphalt Shingles
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.