Roofing Service in Ocean City, NJ

A Roof on a Barrier Island Is a Different Assembly

Ocean City sits on a barrier island with the Atlantic on one side and the back bays on the other, and there is nowhere on it that is more than a few blocks from salt water. That single fact drives most of what makes roofing here different from roofing eight miles inland, and it is the thing most commonly ignored by whoever put the last roof on.

Salt-bearing air is relentless and it attacks metal first. Galvanised flashing, electro-galvanised nails and standard drip edge corrode here in a fraction of their inland life, and the failure is almost never the shingle — it is the fastener holding the shingle or the flashing at the wall junction that gave up first. We have opened plenty of roofs on this island where the field looked serviceable and every nail head had rusted away to nothing.

The specification that actually survives is unglamorous: stainless or hot-dipped galvanised fasteners, aluminium or coated flashing rather than bare galvanised, and sealed, properly lapped edge detail. It costs a little more on the estimate and it is the difference between a roof that reaches its rated life on a barrier island and one that does not get close.

Wind, Nor'easters, and the Months Nobody Is Watching

The wind exposure here is the second thing that separates island roofs from mainland ones. There is nothing between an Ocean City roof and open ocean, and the standard nailing pattern a crew uses inland is not the pattern this exposure calls for. High-wind installation means more fasteners per shingle, placed correctly in the nailing zone, with the starter course and the rake and ridge detailed to resist uplift at the edges — which is where wind failure virtually always begins.

The weather that does the damage is usually not a summer hurricane. It is a February nor'easter: two or three days of sustained wind driving rain almost horizontally from the northeast, which is precisely the loading that finds a marginal wall junction or a lifted tab and pushes water uphill under it. Wind-driven rain does not obey gravity, which is why coastal detailing has to assume water will arrive from below and sideways.

And the timing is the cruel part. A very large share of the island's housing stock is second homes and summer rentals, standing empty through exactly the season that produces the damage. A shingle lifts in November, the roof takes water through four months of storms, and the first anyone knows is a ceiling stain found on Memorial Day weekend by which point the decking and insulation are gone too.

That is the specific reason we will inspect and photograph a roof for an owner who lives elsewhere and send the report through. Finding a lifted section in December costs a repair. Finding it in May costs a repair plus decking, insulation, drywall and a lost rental week.

• High-wind nailing patterns and reinforced edge, rake and ridge detail — uplift starts at the perimeter
• Nor'easters drive rain sideways and uphill; flashing has to assume water arrives from below
• Empty winter houses turn a small failure into a four-month one
• Off-season inspection with photographs is the cheapest insurance an absentee owner can buy

Flat and Low-Slope Roofs: Common Here, Commonly Done Wrong

Ocean City has a great deal of low-slope roofing — the flat sections over rear additions, the roofs on duplex and triplex units, the decks and porch roofs that tie into a main slope. Low slope is not a lesser version of a pitched roof, it is a different building system, and the most common failure we find on the island is asphalt shingles installed on a pitch too shallow to shed the way shingles need to.

Below about a 2:12 pitch, shingles simply do not work: water moves slowly enough to find the laps, and wind-driven rain pushes it back up under the courses. The correct answer is a membrane — TPO or EPDM in single ply, or modified bitumen — installed as a continuous waterproof surface with the seams welded or bonded rather than relying on gravity and overlap.

The details are where membrane roofs live or die, and the details are all at the edges: the perimeter termination, the flashing where the flat meets a vertical wall, the drain or scupper, and every penetration through it. A membrane field almost never fails in the middle of a sheet. It fails at a termination bar someone did not fasten properly or a scupper that was never sized for the water the roof actually collects.

Ponding is the other flat-roof issue here, and on an island with a high water table and settled framing it is common. Standing water accelerates every failure mode a membrane has. Sometimes the fix is tapered insulation to build fall, sometimes it is relocating or adding a drain. Either way it needs identifying before the new roof goes on, not afterwards.

Elevated Houses, Flood Rules and Rebuilt Rooflines

Since Sandy a large number of houses on the island have been raised, and a raised house is a windier house. Lifting a structure eight or ten feet puts the roof into faster-moving air and increases uplift on the same roof that was fine at the old elevation. When we look at a raised house we look hard at the edge and ridge detail, because that is where the additional load shows up first.

Rebuilt and elevated houses also tend to have complicated rooflines — dormers, multiple pitches, decks cut into the roof plane, and flat sections joined to pitched ones. Every one of those junctions is a place water can be driven into during a nor'easter, and complexity is the honest reason two houses on the same block can be very different numbers.

Construction on the island also carries its own practicalities: permits through the Ocean City building department, tight lots, limited street frontage for a dumpster, and summer periods when nobody wants a tear-off happening next door. We plan staging and timing at the estimate. Shoulder-season work is often easier to schedule and easier on the neighbours, and if you are running a rental it keeps the work clear of the weeks that earn.