Decking replacement
The sheathing under the shingles
Head of the Harbor, New York
Ice and water shield in Head of the Harbor
Ice and water shield is a self-adhering rubberised membrane applied at the roof's most vulnerable points — eaves, valleys, and around penetrations — where ordinary underlayment is not enough. It seals around fixings rather than just lying under them, so water that gets past the covering still cannot reach the decking. It matters most where meltwater backs up behind ice at a cold eave, and in valleys where water volume is highest.
What the job involves
- Membrane at eaves extending past the interior wall line
- Full-width application in valleys
- Sealing around penetrations, skylights and chimney bases
- Correct overlap and roller-bonding to the decking
Signs you need it
- A history of ice damming at the eaves
- Repeated valley leaks despite repair
- Any re-covering on a roof with low-slope sections
Why roofs fail in Head of the Harbor and Suffolk County
Head of the Harbor sits on a barrier-adjacent island where three things attack a roof at once. Salt air corrodes every metal component up there — flashing, fasteners, drip edge, vent collars — so the parts meant to outlast the shingles frequently do not, and most leaks here turn out to be metal failures rather than shingle failures. Nor'easters bring sustained wind with rain driven sideways, which gets under courses that would shed any amount of vertical water. Then winter adds ice damming at the eaves, where meltwater running down a warm roof refreezes over the cold overhang and backs up beneath the shingles. Housing stock across Suffolk County runs older than the national average, with a lot of complex roof geometry, dormers and additions — and every junction is another place flashing has to work.
Head of the Harbor has a population of about 1,520, and the housing stock here sets the pattern for what fails first on a roof.
Questions about ice and water shield in Head of the Harbor
Do I need this where I am?
At the eaves it matters most anywhere that gets freeze-thaw and ice damming — the colder the winter, the more it earns its cost. In valleys and around penetrations it is worth having in any climate, because that is about water volume rather than ice.
Can it be added to an existing roof?
Only where the covering comes off, since it bonds directly to the decking. It is a re-cover or major-repair item rather than a retrofit.
Other roofing work in Head of the Harbor
Roof and attic ventilation
Airflow that stops condensation and ice dams
Tile roof repair
Concrete and clay tile
Wind damage repair
Lifted tabs and broken seals
Solar panel removal and reset
Lifting panels for roof work
Skylight replacement
Replacing a failed roof window
Describe what you are seeing
You will get a straight answer on whether Head of the Harbor needs someone out today or whether it can wait — before anyone quotes you for anything.
Call (706) 696-1888