Flat roof repair & replacement in Edgewater, NJ
Most of the roof area in Edgewater is flat. The condominium and rental buildings that replaced the River Road factories carry low-slope membrane roofs, and much of that stock went up from the 1980s on — which puts a good many original membranes at or past the life they were sold with. We repair, recover and replace EPDM, TPO and modified bitumen, and write it up for whoever has to decide.
The redevelopment calendar is a re-roofing calendar.
Until the middle of the last century the Edgewater waterfront was industry — Ford assembly, Alcoa, Valvoline, American Can, and the chemical and dye works. As the factories closed, the land was redeveloped as housing, slowly from the 1960s and quickly from the early 1980s, and building has hardly stopped since: the borough grew by almost a quarter between 2010 and 2020.
Seen from the Palisades, that history is a series of generations of flat roofs. A building finished in the 1980s or 1990s that is still on its first membrane is at or beyond the life that membrane was sold with. One finished in the 2000s is usually sound across the field but starting to need its seams, edges and flashings looked at. The newest buildings are still inside their warranties, which makes now the time to read what those warranties ask of the owner.
If nobody on the board knows when the roof was last replaced, that is the first question worth answering. The association’s records usually say; a core sample says for certain.
Repair, recover or replace — decided by what is under the membrane.
| Option | When it is the right answer | What it involves |
|---|---|---|
| Repair | The membrane is sound across the field and the water is getting in at a detail: a seam, a drain, an edge, a penetration | The failed details re-flashed and re-sealed in the same system, and the rest of the roof photographed and noted, so the board knows what is coming next |
| Recover | There is only one existing roof, the insulation under it is dry, and the deck is sound | A new cover board and membrane laid over the existing roof without stripping it — the cost and disruption of a tear-off saved |
| Replace | The insulation is wet, there are already two roofs on the deck, the deck is damaged, or the falls have to be rebuilt to stop ponding | Stripped to the deck, tapered insulation wherever the water needs a better path to the drains, and a new membrane held down for the exposure |
The line between recover and replace is usually wet insulation, and nobody can see it from the surface. That is why the survey comes before the price.
What a moisture survey tells a board.
Wet insulation under a membrane does not show on the surface, and it does two kinds of damage: it stops insulating, and it rules out a recover. So a building roof is surveyed before it is priced — moisture readings taken across the field, then confirmed with core samples cut at the suspect areas and patched the same day. The cores also show what is really up there: how many roofs, what insulation, what deck.
What comes back is a roof plan marked with the wet areas and the core locations, photographs of every detail that is failing, and each option with the reasoning behind it. A board can vote on that. It cannot vote sensibly on three prices for three different scopes.
Four things a waterfront flat roof has to withstand.
Suction at the edges and corners
Wind crossing a flat roof pulls up hardest along the perimeter and hardest of all at the corners. On a building facing open water, those zones get more fasteners and plates than the middle of the roof, and the edge metal should be a tested system — the ES-1 standard the building code references for low-slope roof edges — not a strip of bent flashing.
Metal in salt-influenced air
Coping caps, termination bars, drain clamping rings, equipment stands and the screws that hold them all corrode faster beside the river than inland. They are specified in aluminum, stainless or coated steel and kept apart from dissimilar metals, not left to whichever galvanized part was cheapest.
Rain driven into parapets
On an exposed face, wind pushes rain sideways into coping joints and the tops of parapet walls. Copings need sloped tops, covered joints and a membrane carried up and over the wall beneath them; otherwise the water ends up inside the wall and appears in a unit below, a long way from the roof.
Anything loose
Stone ballast and pavers get scoured off corners in high winds, and anything left lying on a roof can go over the edge. Where a roof is ballasted, the corners and edges are checked on every visit, and whatever another trade has set on the roof is secured and flashed rather than left to sit.
Porches, rear rooms and dormer tops.
Flat roofs are not only on the waterfront. The older houses on the hillside streets have their own: a porch roof, a rear room added later, the flat top of a dormer. They are small roofs with a great deal of detail around them — a wall to flash into, a pitched roof to tie under, edge metal on three sides — and they get the same membranes as a building roof, never rolled roofing. Usually they are done alongside a roof repair or a new roof on the rest of the house.
What an association gets from us.
- Photographs and a written account of the roof’s condition, before anyone mentions a price.
- The survey results on a roof plan, with the wet areas and every core location marked.
- Repair, recover and replace set side by side, each with the reasoning that supports it.
- A phasing plan that keeps occupied units weathertight, with notice of which parts of the building are affected and when.
- Certificates of insurance that name the association or the owner.
The retail and mixed-use roofs along River Road get the same report at their own scale, addressed to the owner or the property manager. The systems themselves — EPDM, TPO and modified bitumen, and where each is the right answer — are compared on flat & low-slope roofing.
The rest of the roof, and the rest of the borough.
Do you work on flat roofs on Edgewater condominium buildings?
Yes. Most of the roof area in the borough is low-slope membrane on the condominium and rental buildings along River Road. We repair, recover and replace EPDM, TPO and modified bitumen roofs and report to the board or the managing agent, with photographs and a written assessment before any price.
Our roof is original to the building. Does it need replacing?
Age alone does not decide it. A membrane from the 1980s or 1990s is at or past the life it was sold with, but what decides between repair, recover and full replacement is whether the insulation under it is wet and how many roofs are already on the deck. A moisture survey, confirmed with core samples, answers both questions.
Can a new membrane go over the old one?
Sometimes. Under the building code a recover is generally allowed only over a single existing roof that is dry and sound. If the insulation is wet, if there are already two roofs on the deck, or if the existing covering is not a sound base, the roof has to come off. Where a recover is allowed, it saves real money and a good deal of disruption for the people living underneath.
Which membrane is best for a building on the Hudson?
It depends more on the building than on the brand. TPO's reflective, welded seams suit a large roof over occupied units; EPDM is forgiving and long-serving; modified bitumen suits small roofs crowded with detail. On an exposed waterfront roof, how the membrane is held down matters as much as which one it is: full adhesion or enhanced fastening at the edges and corners is what keeps it on.
Do you repair flat roofs on smaller commercial buildings along River Road?
Yes. The retail and mixed-use buildings along River Road use the same low-slope systems as the condominiums, and they get the same survey, report and photographs, addressed to the owner or the property manager.
Know what is under the membrane before you vote on it.
A written report, photographs and a marked roof plan, from a firm based in Edgewater itself.