Guide
When a second shingle layer belongs on the tear-off line, not left in place
Written by Ultra Power Construction. The credentials page states that this contractor is licensed and insured in New Jersey and lists GAF and Owens Corning programs. Updated 2026-09-28.
Many Montclair, Maplewood, and South Orange roofs already carry more than one shingle layer. A bid that assumes a clean overlay can miss soft deck, fastening limits, and the weight of a third system. The decision is whether the estimate removes every layer to the deck or leaves the old roof under the new one.
- Count the layers from the eave and a cutout
- Know why overlays fail on older North Jersey houses
- What the written tear-off line must name
Count the layers from the eave and a cutout
Look at the eave edge and any open valley. Two thicknesses of shingle mean a second layer is already there. The estimate should say how many layers come off, not only which shingle brand goes on.
Know why overlays fail on older North Jersey houses
An overlay adds weight, can trap moisture against soft plywood, and often cannot meet manufacturer fastening rules on an uneven deck. If the second layer is cupped or the nails are popping, tear-off is the honest scope.
What the written tear-off line must name
Name the layer count, dumpster or disposal, and whether soft deck will be replaced by the sheet. A Maplewood or South Orange bid that says “re-roof” without a tear-off line leaves that decision unpriced.