Insulation boards
Polyiso insulation laid to code thickness so water moves off instead of ponding.
Flat Roofing
TPO Roofing Randolph, NJ
A local roofing contractor in Randolph can put a new TPO membrane on a flat roof, after checking the deck, the insulation and how water drains off. Dial (973) 858-1826 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. It comes in wide rolls in thicknesses like 45, 60 and 80 mil, and the thicker sheets hold up better to foot traffic and weather. 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.
The membrane is only as good as the details around it. Leaks come from under-welded seams, flashing that pulls away at walls and curbs, and penetrations sealed with caulk instead of proper boots. Water that ponds for more than a couple of days after rain wears the surface and pushes into any weak spot, so slope to the drains is part of the design.
Depending on what the roofer finds, tpo roofing in Randolph, NJ can go hand in hand with tpo roof repair and flat roof installation.
Need tpo roofing in Randolph? Call (973) 858-1826 to talk to a local roofer.
Call nowThe process
How a TPO roof is installed
A TPO roof is built in layers, and each one has a job.
Survey the old roof
A survey of the old roof usually includes a small core cut through the layers to check for trapped moisture and count existing roofs. Wet insulation or a second existing layer both point toward a full tear-off rather than a recover.
Prepare the substrate
Old roofing is removed where needed, damaged decking is replaced and the surface is cleaned and made smooth. Where the old roof stays, a recovery board goes down first so the TPO does not ride on gravel or blisters.
Install insulation boards
Polyiso boards go down next, and tapered panels and crickets are added where water needs help getting to drains or scuppers. Many energy codes require a minimum insulation value when a roof is replaced, so this layer is planned to meet it.
Secure the sheets
The membrane is fastened at the laps or fully adhered, depending on the deck, the wind exposure and the design. 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. The finished seams are probed by hand so any gap is rewelded before the job is done.
Finish the edges
Pipes get pre-molded TPO boots, curbs under rooftop units are wrapped with membrane, and walls get flashing run up and held with a termination bar. Drains get new clamping rings, and the roof edge gets metal the membrane can be welded to.
What is included
Parts of a TPO roof
Perimeter metal
Perimeter metal the membrane can weld to to hold the sheet down in wind.
Welded membrane
White TPO membrane in the chosen thickness so the roof acts as one continuous sheet.
Core cut
A sample cut through the old layers to decide between tear-off and recover.
Penetration flashing
Flashing at vents, curbs, skylights and walls built from the same membrane as the field.
Related service
TPO Roof Installation Randolph, NJ
New TPO roof installation is the cleanest version of the job, since there is no old roof to deal with. Drain or scupper locations, tapered insulation and the attachment method are worked out up front so the finished roof drains on its own.
On homes in Randolph, TPO installation often covers a flat roof over a porch, a garage, a sunroom or the low section of a split-level roof. Below the minimum pitch for shingles, a welded membrane is far more reliable. 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 Randolph, NJ
TPO roof replacement means taking an aging membrane or old flat roof down to a sound base and putting a new TPO system on top. A moisture scan, often with an infrared camera, shows how much of the insulation is wet and has to come out. Wet insulation left in place loses its value and can rust fasteners and steel decking from below.
If the existing roof is one layer and mostly dry, a recover with a new cover board and TPO can be an option. Once a building already has two roof systems, the next roof has to start from the deck.
Related service
PVC Roofing Randolph, NJ
Like TPO, a PVC roof is a white or light-colored single-ply sheet whose seams are welded with hot air. Where it stands apart is resistance to grease and chemicals, making it a frequent choice under restaurant exhaust fans and on some industrial roofs.
PVC and TPO cannot be welded to each other, so repairs and additions have to match the existing membrane. For a Randolph roof with no grease or chemical exposure, TPO is often the simpler choice, while PVC earns its place where those exposures exist.
Local help
TPO Roofing Near Me
Around Randolph, TPO goes on everything from shopping centers to the flat roof over a back porch: older homes with flat sections and newer buildings with long, low roofs both end up with it. From Randolph out to Dover, Wharton, Succasunna and Rockaway, the mix of older low-slope sections and newer commercial roofs means every job starts with a look at what is already there, so it pays to plan the drainage and the details as carefully as the membrane itself.
Need tpo roofing around Randolph? Call (973) 858-1826 for a Randolph roofer who serves the towns around it too.
How the weather here affects roofs around Randolph
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. Heat escaping from the attic melts snow on the upper roof, and the water refreezes at the colder eaves, building ice dams that push water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. Most homeowners in Randolph, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why not wait
Smaller repairs
Small roof problems caught early usually stay small repairs.
Familiar with local homes
Local roofers see the same roofs and storm damage across Randolph and nearby towns.
Know what happens next
Ask the roofer about the cause, the options and the estimate before work starts.
TPO Roofing FAQ
Can TPO go over my existing roof?
The core cut decides that. A recover over a single, dry roof is usually possible. If there are already two roofs, or the insulation is wet, the old roofing comes off down to the deck.
What is the lifespan of a TPO roof?
Expect something in the range of 15 to 30 years from a good TPO roof. Membrane thickness, how well the roof drains and how often people walk on it make the biggest difference.
How does TPO compare to EPDM rubber roofing?
The two membranes suit different roofs. EPDM is black rubber with adhesive or taped seams, and TPO is a white thermoplastic with welded seams. 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.
Does a white TPO roof save energy?
The white surface reflects a large share of the sun instead of absorbing it. That lowers roof temperatures and can reduce the cooling load in the rooms below, especially with good insulation under it. A clean surface reflects best.
Is a TPO roof good for a house?
Many homes use TPO on flat or nearly flat sections where shingles would leak. Steeper slopes are still better served by shingles or metal. The key on a house is the tie-in where the TPO meets the shingles or siding.
More questions? Call (973) 858-1826
Related services
TPO Roof Repair
TPO roof repairs welded with matching membrane, 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 work for business, institutional and multi-family buildings, from single-ply membranes to metal and coatings.
Learn moreRubber Roof Installation
New EPDM rubber roofs laid in wide sheets over insulation and a cover board, with primed and taped seams, with as few seams as the roof allows.
Learn more
Looking for something else?
See all roofing servicesTalk to a Randolph roofer about tpo roofing
Call (973) 858-1826 to talk to a roofer serving Randolph, NJ.