EPDM Roofing Install, Step by Step
Every project starts with a roof asset survey. We walk the rooftop, map each scupper and drain, measure square footage, and photograph every penetration before we quote a number. After that, the sequence is predictable.
- We stage a dumpster at street level, set a ladder and scaffold at the roof edge, and clip every crew member into a safety harness before a pry bar touches the old cap sheet.
- Tear-off strips the existing built-up roof, tar, and roofing felt in sections, and we tarp the roof deck so a rain shower never sits on exposed sheathing.
- Decking gets checked board by board: rotted plywood or OSB comes out and new dimensional lumber goes in, and any overdriven nail or screw backing out of a rafter, joist, truss, or ridge beam gets pulled and reset.
- A vapor barrier and rigid insulation go down next, anchored with mechanical fasteners, which is where most of the energy efficiency on a commercial building comes from.
- EPDM or PVC membrane panels get rolled out and allowed to relax, then joined with primer and splice adhesive or a hot-air weld, depending on the system.
- Details finish it: counter-flashing along the parapet, pipe boots at plumbing vents, and boot flashing at every curb and skylight. A nail gun and air compressor speed the deck work, but every finished lap is hand-sealed and rolled.
EPDM, TPO, Modified Bitumen, and BUR: Choosing the Right Sheet
EPDM roofing is a rubber sheet, and it earns its place on large flat roofs where HVAC technicians walk the surface year-round. We quote it alongside TPO, PVC membrane, modified bitumen, and built-up roof assemblies, because the right sheet depends on the building.
- TPO is the reflective white single-ply we reach for where cooling load matters, and its heat-welded seams hold up on a sun-exposed rooftop.
- PVC membrane costs more, but it survives the kitchen grease and chemical exhaust off restaurant rooftop equipment that would degrade a cheaper sheet.
- Modified bitumen is a coated, granulated, laminated asphalt sheet suited to smaller roofs, where torch work or mastic-and-membrane layering beats a full single-ply install.
- Built-up roof systems still match older buildings, where layers of bitumen and roofing felt have to tie into the existing buildup at a parapet or party wall.
- Carlisle SynTec, Firestone, Versico, Johns Manville, and GAF EverGuard all make systems we install, and each membrane carries a manufacturer warranty in the 15- to 30-year range.
- If sustainability is the goal, a green roof assembly can sit over a sound membrane, though it needs a structural review before anyone prices it.
EPDM Roofing Inspections: What We Find Before It Leaks
We are a licensed and insured Newark roofing company, and a roof inspection is the cheapest hour of the project. A roofer who quotes from the curb is guessing.
Water wicks along a roof deck, seeps through a seam, and shows up as a ceiling stain long after the damage started. Here is what we look for.
- Ponding water at a scupper or drain usually means the deck has settled and the pitch is gone.
- Blistering adhesive, seam splits, and membrane delamination along the lap, which no amount of tar or roof cement will fix permanently.
- Granule loss, alligatoring, and flaking on a modified bitumen cap or an asphalt shingle above the membrane.
- Buckled, curled, or algae-stained shingles near the ridge, plus rotted fascia and soffit at the eave and a sagging gutter dumping water onto the section below.
- Corroded metal panel edges, failed caulk at chimney flashing or coping, and step flashing pulling away from a dormer wall.
- Rusted pipe flashing, a cracked vent boot, and a skylight curb where the sealant has peeled.
Newark Weather, Timelines, and Cost Drivers for EPDM Roofing
Newark sits in an ice-dam climate. Freeze-thaw cycles push meltwater under shingles and into ceilings near top-floor exterior walls, and one nor'easter can drop a foot of snow on a roof already holding ponding water from a 46-to-50-inch precipitation year.
A recover over dry, sound membrane takes a day or two. A full tear-off with new insulation, decking, and flashing runs a week or more, and building code rules on insulation R-value can add another layer to the assembly.
Cost drivers are square footage, membrane type, wet insulation, deck repairs, and whether the parapet or coping needs rebuilding.
Moisture meters and infrared scans are the roofing technology that finds saturated insulation before we cut a test square. As a Newark roofing contractor, we hand you a line-item roof estimate, so you can see what is membrane work and what is carpentry.
We work across Essex County: the Ironbound under I-78, Forest Hill, Weequahic, Vailsburg, University Heights, Downtown Newark near Broad Street, and the older roofs along Route 21 and the Turnpike.
EPDM Roofing Where It Meets a Sloped Roof
Plenty of Newark buildings carry both. A flat EPDM roof drains toward a gable or hip section, and the waterproofing and weatherproofing detail where the two meet is where leaks usually start. Here is how we handle the transition.
- Asphalt shingle, architectural shingle, and three-tab shingle fields above a flat roof still need ice-and-water shield at the eave and synthetic underlayment over the field, not tar paper.
- Wood shake, cedar shake, slate, clay tile, and concrete tile each take their own fastening pattern and a walkability plan that keeps boots off the field.
- Standing-seam panel and corrugated panel move with temperature, so panels sit on concealed clips over a batten or counterbatten and land on a sealed fastener at every purlin.
- Copper, aluminum, and composite roofing age differently from the street, and a new section that ignores the existing roofline is a visible mistake on a historic block.
- Drip edge, rake trim, ridge cap, and balanced ventilation (ridge vent on the exhaust side, soffit vent or attic fan on the intake side) decide whether the attic breathes.
- A mansard, gambrel, or dormer-heavy roofline adds valley, hip, verge, and apron flashing details that should be hand-sealed rather than rushed.
- A canopy or awning frame bolted through the membrane is a penetration first and shade second, and the overhang at a gable end gets the same flashing detail as a snow guard above a doorway.
- Repair small problems while they are small. A resealed flange today beats a truss replacement and a wet building envelope next spring.
