What a Roof Coating System Does
Roof coating is a fluid-applied layer that bonds to an existing membrane and turns it back into a watertight surface. For building owners in Ironbound and Roseville, it costs far less than a full tear-off.
- Elastomeric coating stretches and contracts with the roof deck instead of cracking at every temperature swing.
- Acrylic coating suits dry, low-traffic rooftops that need reflectivity more than elongation.
- Silicone coating stays flexible over ponding water, the standing moisture that never drains off a flat roof.
- Polyurethane coating adds abrasion resistance where carts, tools, and foot traffic wear the surface.
- A primer bonds the finish coat to a chalky or dirty substrate so it does not peel within a season.
- Polyester reinforcing fabric goes into the wet base coat to bridge splits at each seam and penetration.
- We quote GAF Unisil, Henry, and Tropical Roofing lines because they publish coverage rate and tensile strength data we can hold them to.
What We Check During the Roof Condition Survey
A roof condition survey tells us whether coating is the right call or whether the roof is past saving. We walk the field, probe soft spots, and test drainage before we price a single square.
- Ponding water that lingers more than 48 hours points to a drainage or slope problem coating alone will not solve.
- UV degradation shows as chalking, alligatoring, and a surface that flakes under a fingernail.
- Blistering means moisture is already trapped in the membrane and will push a new coating off from below.
- Seam separation on a built-up roof or modified bitumen field lets water wick into the insulation.
- Old tar, pitch, asphalt, or bitumen patching tells us where someone chased a leak instead of finding it.
A roofer who quotes a coating without walking the roof is guessing with your money. We walk every one.
How the Work Runs, Start to Finish
Crews follow the same order every time, because skipping prep is how coatings fail in year two. A typical Essex County recoat runs six stages.
- We protect the property first, with scaffold and ladder access, safety harness tie-offs, and a dumpster set so debris never blocks your lot.
- Failed sections come out with a pry bar and roofing shovel, then we pull nails, screws, and fasteners by hand or with a nail gun.
- Reinforcing fabric goes into the base coat at every seam, valley, and penetration, with fresh caulk, sealant, and adhesive at each pipe boot.
- Finish coat goes down at the specified wet film thickness, and we verify dry film thickness after it cures.
- Cure time runs 24 to 72 hours depending on temperature, so we schedule around dry weather windows.
- A final roof inspection covers drainage and flashing, plus a written list of anything we could not fix that day.
Before any of that, the roof deck gets swept and measured in roofing squares, and any rotted plywood or OSB sheathing is replaced.
Crews work off scaffold or ladders in safety harnesses, nail guns run off an air compressor, and a torch only appears when a torch-applied cap sheet is specified.
Edge, Flashing, and Drainage Details That Decide the Job
Most callbacks trace back to a detail at the perimeter, not the field of the roof. These are the spots we rebuild rather than coat over.
- Drip edge, rake trim, and eave metal get replaced when they are bent or short, since water has to leave the roof cleanly.
- Fascia and soffit rot is common on older Newark frames, and we repair it before coating so the roofline stays square.
- Ridge cap, ridge vent, and a correctly sized soffit vent keep the attic breathing, which is what prevents ice dams in the first place.
- Step flashing, counter-flashing, and apron flashing are hand-sealed at every wall and chimney, then re-sealed with roof cement and mastic.
- Chimney flashing, pipe flashing, boot flashing, and every vent boot get new caulk and sealant so water cannot seep behind them.
- Parapet coping, scupper drains, and gutters with downspouts are checked for standing water before anything is coated.
- Snow guards and roof anchors get re-set rather than buried, so your fall-protection points stay usable next winter.
The goal is waterproofing and weatherproofing that lasts, not a cosmetic skim coat.
Newark Weather and Building Stock Change the Work
Newark sits in a classic ice-dam climate. Freeze-thaw cycles push meltwater under the seams and into ceilings near top-floor exterior walls, and one nor'easter can drop a foot of snow.
- An ice dam forms at the eave where heat escapes and refreezes, so we check insulation, ventilation, and soffit vent airflow first.
- Where a home runs an attic fan instead of balanced ridge and soffit ventilation, we correct the balance before coating.
- Snow loads and snow guards matter on the mansard, gambrel, and deep-overhang rooftops you see in Forest Hill and University Heights.
- Roughly 46 to 50 inches of rain a year means a clogged gutter or downspout does more damage here than sun exposure.
- Hurricane Sandy in October 2012 showed how far floodwater travels through eastern Essex County.
- Buildings near I-78, the New Jersey Turnpike, the Pulaski Skyway, and McCarter Highway collect grit that chalks a rooftop faster.
Cost Drivers, Timelines, and When Coating Is Wrong
Roof coating is priced by the square. Prep labor, penetration count, and deck condition move the number more than the coating itself does.
- Square footage, measured in roofing squares, sets the base price.
- Prep labor, removing debris and treating rust, is usually the second-largest line item.
- Chimney flashing, skylight curbs, dormer walls, parapet caps, and coping each add hand work.
- Access matters: a rooftop that needs scaffold or a lift costs more than one we reach by ladder.
- Whether the substrate takes a spot prime or a full primer system changes material cost.
- Timing matters too, since coating needs dry weather and temperatures above the manufacturer's minimum.
Coating covers a sound substrate only. If a ridge beam, joist, rafter, truss, purlin, batten, or counterbatten has shifted or rotted, the fix is structural, and we say so before quoting.
It also does not belong on steep-slope asphalt shingle, architectural shingle, three-tab shingle, wood shake, cedar shake, slate, clay tile, concrete tile, or standing-seam panel.
Existing TPO, EPDM, PVC membrane, metal panel, and corrugated panel roofs are the surfaces we recoat most often.
On steep-slope work, protection sits under the surface: synthetic underlayment, roofing felt or tar paper, an ice-and-water shield at the eave, and a vapor barrier against interior moisture.
Shape changes the labor. A hip or gable roof walks easily; a mansard, gambrel, or deep overhang adds transitions, and a dormer, skylight, canopy, awning bracket, or gable verge needs flashing cut in by hand.
Everything we install meets the New Jersey building code in force when the permit is pulled, and as a licensed and insured roofing contractor we would rather explain why coating is wrong than sell you one that fails.
