Insulation boards
New insulation boards sized for the energy code with slope built toward drains and scuppers.
Flat Roofing
TPO Roofing Dover, NJ
TPO roofing in Dover is a white single-ply membrane rolled over insulation and heat-welded at every seam, after checking the deck, the insulation and how water drains off. Dial (862) 430-1002 to talk through a TPO roof with a local roofer.
On flat and low-slope roofs, TPO has become one of the most common membranes, a single layer of thermoplastic sheet rather than layers of asphalt. Rolls come in several widths and thicknesses, with 60 mil a common middle choice and 80 mil used where the roof sees more wear. The laps are fused with a hot-air welder, which is the main reason a well-installed TPO roof stays tight at the seams for years.
A TPO roof rarely fails in the middle of a sheet; it fails at the edges, seams and penetrations. Leaks come from under-welded seams, flashing that pulls away at walls and curbs, and penetrations sealed with caulk instead of proper boots. Drainage matters just as much, since water that sits in low spots for days speeds up wear and finds any weak seam.
If the problem goes deeper than it first looked, a Dover roofer may also recommend tpo roof repair or flat roof installation.
Need tpo roofing in Dover? Call (862) 430-1002 to reach a nearby roofing contractor.
Call nowThe process
The TPO installation process
Most TPO jobs follow the same basic order.
Check the existing roof
The roofer walks the roof, checks for soft decking and often takes a core cut to see how many layers are there and whether the insulation is wet. Codes generally allow no more than two roof systems, so a roof that already has two must be torn off.
Get down to a sound base
If the old roof is coming off, it is stripped to the deck, and rotted plywood or rusted steel deck is replaced. On a recover, a cover board goes over the old roof so the new membrane has a flat, solid base.
Lay the insulation
Insulation boards are laid in staggered layers, with tapered sections built to move water off flat spots. This layer also brings the roof up to the insulation level current codes expect.
Roll out the TPO
Each sheet is either screwed down along its edge, with the next sheet lapping over the fasteners, or glued to the insulation across its whole back. Fully adhered roofs tend to be quieter in wind and look smoother, while fastened roofs go down faster.
Weld the seams
A robotic hot-air welder runs the long seams and a hand welder does corners and details, fusing the overlapping sheets together. After welding, the roofer drags a probe along the seams to catch cold or skipped spots.
Seal the penetrations
Penetrations get molded boots or field-built flashing, curbs are wrapped and walls are flashed up and capped. TPO-coated edge metal at the perimeter lets the membrane weld right to the edge.
What is included
What a TPO roof job includes
Moisture check
A check of the old roof for trapped water before the new roof is planned.
Penetration flashing
TPO flashing welded around every opening built from the same membrane as the field.
Perimeter metal
New drip edge, coping or gravel stop at the roof edge to hold the sheet down in wind.
TPO sheets
Single-ply TPO rolled out across the roof so the roof acts as one continuous sheet.
Related service
TPO Roof Installation Dover, NJ
For a brand new low-slope roof, the important decisions come before the first roll is opened. Drain or scupper locations, tapered insulation and the attachment method are worked out up front so the finished roof drains on its own.
For Dover homeowners, the usual TPO installation is a small roof where shingles cannot work because the pitch is too low. Shingles need a minimum pitch to shed water, so these low sections need a membrane. Where the TPO meets a shingled slope, the transition is flashed so water from above runs over the membrane, not under it.
Related service
TPO Roof Replacement Dover, NJ
A TPO roof replacement comes into play when repairs stop holding because the sheet or the insulation under it has worn out. An infrared or capacitance scan helps map wet areas so only the damaged insulation is replaced. Leaving wet boards under a new roof traps the water and causes blisters and rot later.
A single dry existing roof can sometimes stay in place under the new membrane. A second recover is off the table on a roof that already carries two systems.
Related service
PVC Roofing Dover, NJ
PVC roofing is the close cousin of TPO: a single-ply thermoplastic membrane with heat-welded seams. The difference is in the chemistry: PVC holds up better to grease, oils and many chemicals, which is why it is a common pick for restaurants and buildings with kitchen exhaust on the roof.
A roofer needs to know whether a white roof is PVC or TPO before patching it, since the two do not weld to each other. For most Dover homes and offices, TPO does the job, and PVC is worth considering over kitchens, labs or anywhere oils land on the roof.
Local help
TPO Roofing Near Me
In Dover, a lot of TPO work replaces old tar and gravel or rolled roofing: older flat roofs that have been patched for years are the most common candidates. Across Dover and nearby towns like Wharton, Rockaway, Mount Arlington and Morris Plains, older roofs often have one or two layers already in place, which is why the core cut and tear-off decision matter so much, so the best time to plan a TPO roof is before the old one starts leaking into the ceiling.
Searching for tpo roofing near me from Dover or Wharton, Rockaway, Mount Arlington and Morris Plains? Call (862) 430-1002 to talk to a roofer who works in your part of town.
How the weather here affects roofs around Dover
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, building ice dams that push water up under the shingles. Strong coastal storms push rain into every weak spot at the flashing and valleys. Most homeowners in Dover, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why fix it now
Less damage
Small roof problems caught early usually stay small repairs.
Local knowledge
Roofers in Dover know the roof types and weather wear common in local homes.
Clear next steps
Ask your questions before you agree to anything.
Common questions about tpo roofing
Does a white TPO roof save energy?
White TPO bounces much of the summer sun back off the roof. Less heat soaks through to the building, so the space under it can stay cooler in summer. A clean surface reflects best.
Is a TPO roof good for a house?
On homes, TPO is a strong choice wherever the pitch is too low for shingles. It is not meant for steep roofs, where shingles or metal are the better fit. Careful flashing at walls and shingle transitions is what makes it last on a home.
Is TPO better than EPDM?
The two membranes suit different roofs. TPO is white and reflective with heat-welded seams, while EPDM is a black rubber sheet whose seams are joined with tape or adhesive. In hot, sunny areas and on roofs with many seams, TPO is often preferred, while EPDM has a long track record and is easy to patch.
How long does a TPO roof last?
Expect something in the range of 15 to 30 years from a good TPO roof. An 80 mil sheet on a roof that drains well and sees little traffic tends to outlast a thin sheet on a roof that ponds.
Do I have to tear off my old flat roof for TPO?
The core cut decides that. If there is only one existing roof and the insulation is dry, a recover with a cover board is often allowed. Two existing layers or wet insulation mean a tear-off.
More questions? Call (862) 430-1002
Related services
TPO Roof Repair
Repairs for open seams, punctures, failed flashings and wet spots on TPO roofs, done after the leak source is traced.
Learn moreFlat Roof Installation
New flat roofs built with real slope, insulation, a cover board and a membrane suited to the building, with every wall, curb and penetration flashed properly.
Learn moreCommercial Roofing
Roofing for warehouses, offices, retail, churches and apartment buildings, from single-ply membranes to metal and coatings.
Learn moreRubber Roof Installation
EPDM rubber roof installation with the right thickness, attachment method and flashing details, planned around the slope and the building.
Learn more
Looking for something else?
See all roofing servicesTalk to a Dover roofer about tpo roofing
Call (862) 430-1002 to talk to a roofer serving Dover, NJ.