Guide
Where ice-and-water shield must run on cold, wooded North Jersey roofs
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.
Harding Township, Mendham, and Mountain Lakes roofs sit in colder, more wooded settings where ice at the eaves and water in valleys matter as much as the shingle field. The decision is whether the estimate shows ice-and-water membrane at the eaves, valleys, and penetrations—or only a thin felt strip at the drip edge.
- Eaves need membrane, not a token strip
- Valleys and penetrations are separate runs
- What the estimate must spell out
Eaves need membrane, not a token strip
Ice-and-water should extend from the eave up the roof far enough to cover the heated wall line, not stop at a single narrow band. Ask how many feet upslope the membrane runs on each eave.
Valleys and penetrations are separate runs
Open and closed valleys, skylight curbs, and chimney sides need membrane under the metal or shingles. Listing “ice shield included” without those locations leaves the layout undecided.
What the estimate must spell out
Name eave coverage depth, valley coverage, and whether pipe boots and step flashing sit on membrane. A Mendham or Mountain Lakes bid that only says “underlayment” is incomplete for winter weather.