Drain flashing
Gravel stop or drip edge at the perimeter set into the membrane plies.
Flat Roofing
Modified Bitumen Roofing Boonton, NJ
Modified bitumen roofing in Boonton is a multi-ply asphalt roof, usually a base sheet and a granulated cap sheet, used on flat and low-slope roofs, and match the method to the building and its fire risk. One call to (862) 420-3040 reaches a nearby flat roof pro.
Modified bitumen, often shortened to mod bit, is the modern descendant of the old tar and gravel roof, with polymers added so the asphalt stays flexible. The two main types are SBS, which is rubbery and flexible in cold weather, and APP, which is more plastic-like and is usually torched. With two or three plies, the finished roof is thick and puncture resistant.
The application method is one of the first decisions on a modified bitumen job. Torching gives tight, fused laps, but the flame is a fire risk near wood decks, parapets and anything combustible. Self-adhered and cold-adhesive systems avoid the flame and are often chosen for homes and occupied buildings.
Knowing the signs makes the first conversation more useful. Note any blisters or bubbles, cracking in the cap sheet, bare spots where granules have washed off and laps that are lifting at the edges. Mention whether the roof has been coated or patched with roofing cement, since that changes how new material will stick.
If the problem goes deeper than it first looked, a Boonton roofer may also recommend flat roof replacement or flat roof repair.
Looking for Boonton modified bitumen roofing? Call (862) 420-3040 and describe the problem to a roofer who works in Boonton.
Call nowThe process
The modified bitumen process
A mod bit roof goes on in layers, starting with a sound base.
Survey the existing roof
Before planning, the roofer cuts a small sample to see what is underneath and checks for soft decking. Those findings decide whether the old roof must come off.
Prep the base
On a tear-off, everything comes down to the deck and damaged plywood or planks are replaced. Where the roof ponds, tapered insulation is added to move water off.
Put down the first layer
A smooth base sheet goes down first, fastened or adhered depending on the deck. The roofer offsets the laps so no seam sits directly over another.
Install the cap
A cap sheet with mineral granules is applied over the base sheet. On torched laps, a steady bleed-out of asphalt at the edge shows a good seal.
Flash the walls
Parapets and curbs are flashed with mod bit plies, then capped or counterflashed with metal. Drains get new flashing, and the roof edge gets new metal.
Walk the finished roof
After torch work, a fire watch confirms no hidden heat remains in insulation or wood. A final walk checks laps, flashings and drainage.
What is included
What a mod bit roof includes
Wall flashing
Flashing that runs up the wall and under metal fastened at the top.
Cap sheet
The finished top layer with protective granules that takes foot traffic well.
Insulation
New insulation where the roof is torn off so water reaches the drains.
Base ply
A smooth reinforced base sheet over a clean, sound deck.
Related service
Torch Down Roof Repair Boonton, NJ
Torch down roof repair fixes the leaks that develop in torch-applied modified bitumen: open laps, blisters, splits and failed wall flashing. A blister is cut in an X or cut out, the area is dried and sealed, and a new piece of cap sheet goes over it. Fresh granules over the hot asphalt help protect the repair.
In Boonton, many torch-down repairs sit close to wood framing, so fire safety is part of every job. Many roofers switch to self-adhered or cold-applied patches in tight spots where an open flame is a risk. After torching, a watch period for smoldering material is standard practice.
Related service
Built Up Roofing Boonton, NJ
A built up roof is made of several plies of felt mopped together with hot asphalt or coal tar pitch, then flood-coated and covered with gravel. Bare patches without gravel age quickly in the sun and are often where leaks begin. They are durable, but they show their age at the flashings and in blistered or bare areas.
Most built up roof repairs in Boonton start by clearing the gravel, then patching with new plies and setting gravel back in place. Because these roofs are heavy, recovering over one can strain the structure, and many owners choose a tear-off when the time comes. Common replacements include modified bitumen and single-ply membranes.
Local help
Modified Bitumen Roofing Near Me
Modified bitumen roofs in Boonton cover everything from older homes with flat sections to strip centers and churches. From Boonton out to Lake Hiawatha, Mountain Lakes, Parsippany and Towaco, roofs range from aging two-ply systems with worn granules to newer self-adhered roofs on additions, and the first step is finding out how many layers are already on the deck.
For modified bitumen roofing in Boonton, NJ or nearby towns like Lake Hiawatha, Mountain Lakes, Parsippany and Towaco, call (862) 420-3040 to reach a roofer who covers your street.
How the weather here affects roofs around Boonton
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. Strong coastal storms push rain into every weak spot at the flashing and valleys. Most homeowners in Boonton, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why act early
Less damage
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Roofers who know Boonton
Roofers in Boonton know the roof types and weather wear common in local homes.
Know what happens next
Ask your questions before you agree to anything.
Common questions about modified bitumen roofing
Should I coat my modified bitumen roof?
A coating can extend a modified bitumen roof that is aging but still dry and sound. Loose granules are cleaned off, blisters and open laps are repaired and a primer may be needed to keep asphalt from bleeding through. White coatings reflect sun, which helps the asphalt last.
What is the difference between modified bitumen and built up roofing?
The two are related, with key differences in material and installation. Mod bit replaces the many felts of a built up roof with a few thick polymer sheets, and it skips the gravel. The polymer sheets stay flexible in cold and are easier to repair.
Do I need a tear-off for a new mod bit roof?
What is already up there sets the answer. If there is a single, dry, sound roof, a recovery board and new mod bit may go over it. Two existing roofs, wet insulation or widespread blistering call for a full tear-off.
What is the lifespan of a torch-down roof?
A two-ply modified bitumen roof commonly lasts around 15 to 25 years. Good drainage, intact granules and sound flashings push it toward the long end. Some owners extend the roof with a coating once granules start to thin.
Are torch-applied roofs a fire risk?
Torching uses an open flame, so it carries a real fire risk that has to be managed. Safe practice includes not torching directly on wood, keeping extinguishers on the roof and watching for smoldering after the flame is off. On homes, self-adhered or cold-applied modified bitumen avoids the flame entirely.
More questions? Call (862) 420-3040
Often needed together
Flat Roof Replacement
Tearing off or recovering a worn flat roof and installing a new membrane, insulation and edge metal, so ponding and repeat leaks end for good.
Learn moreFlat Roof Repair
Flat roof repairs matched to the membrane, whether EPDM, TPO, PVC, modified bitumen or built-up, with the patch made from material that bonds to what is there.
Learn moreTPO Roofing
Heat-welded TPO membrane for flat and low-slope roofs, sized to the deck, the drains and the way the roof is used.
Learn moreCommercial Roof Replacement
Tear-off or recover of aging commercial roofs with new insulation and drainage, with nightly tie-ins to keep the building dry.
Learn more
Looking for something else?
See all roofing servicesTalk to a Boonton roofer about modified bitumen roofing
Call (862) 420-3040 for a local roofer in Boonton and nearby towns.