Granulated cap
A granulated cap sheet in white or a dark color with fully sealed laps.
Flat Roofing
Modified Bitumen Roofing South Orange, NJ
Modified bitumen roofing in South Orange is a multi-ply asphalt roof, usually a base sheet and a granulated cap sheet, used on flat and low-slope roofs, which holds up well to foot traffic and patches easily. Call (973) 858-1859 to reach a local roofer.
A modified bitumen roof is built from rolls of polymer-modified asphalt, typically a smooth base sheet under a cap sheet surfaced with granules. Sheets come in SBS, a rubber-modified type that handles cold well, and APP, a plastic-modified type made for torching. The layers give it toughness, which is why it holds up well on roofs that see foot traffic.
How the sheets are applied matters as much as which sheets are used. Torch-applied sheets fuse tightly at the laps, though the open flame demands care around wood framing, insulation and roof edges. Self-adhered peel-and-stick sheets and cold-applied adhesives skip the torch, which makes them common on houses.
Mod bit fails in predictable ways, which helps when you call. Watch for raised blisters, alligator cracking, bare patches and open laps, especially near walls and drains. Mention whether the roof has been coated or patched with roofing cement, since that changes how new material will stick.
Modified Bitumen Roofing is often paired with flat roof replacement and flat roof repair, depending on the cause.
Looking for South Orange modified bitumen roofing? Call (973) 858-1859 to reach a nearby roofing contractor.
Call nowThe process
What a mod bit roof job involves
Each layer of a mod bit roof has its own job.
Start with the deck
A core cut and a walk of the roof show how many layers exist and whether moisture is trapped. With two roofs already in place or wet insulation present, a tear-off is the norm.
Tear off old roofing
Old roofing is removed where needed, rotted decking is replaced and the surface is swept clean. Insulation or a cover board is added, with tapered sections where water needs help reaching the drains.
Lay the base sheet
A base sheet is fastened to wood decks or adhered to insulation and cover board. Its laps are staggered from the cap sheet laps to avoid weak lines.
Apply the cap sheet
The granulated cap sheet is torched, set in cold adhesive or self-adhered over the base. Lap edges are checked for a continuous seal, and loose granules are pressed into any bleed-out.
Flash the details
Base flashing runs up walls and parapets in two plies and is fastened at the top under metal counterflashing or a termination bar. New drip edge or gravel stop and properly set drain flashings finish the edges.
Final check
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 goes into a mod bit roof
Edge metal
Gravel stop or drip edge at the perimeter to finish the system cleanly.
Base ply
A fastened or adhered base layer laid with laps offset from the cap.
Tapered insulation
Rigid boards with tapered crickets to improve drainage and efficiency.
Wall flashing
Reinforced plies at every wall and curb where most flat roof leaks start.
Related service
Torch Down Roof Repair South Orange, NJ
On a torch-down roof, most repairs involve resealing laps, cutting out blisters and adding new plies over damaged areas. For blisters and splits, the damaged section is opened up, dried and covered with a larger patch. Granules are pressed into any exposed asphalt so the patch is protected from sun.
In South Orange, many torch-down repairs sit close to wood framing, so fire safety is part of every job. Where a flame could reach wood or insulation, a self-adhered patch is the safer choice. A fire watch after torching is a basic part of any torch-down repair.
Related service
Built Up Roofing South Orange, 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. With age, these roofs blister, crack at the flashings and open at the edges.
Repairs on a built up roof in South Orange usually involve scraping back the gravel, patching with felt and bitumen or modified bitumen, and replacing the gravel. Replacement often means a tear-off, since the gravel and the weight make recovering difficult. The replacement is often a mod bit or single-ply roof that is lighter and easier to maintain.
Local help
Modified Bitumen Roofing Near Me
Around South Orange, mod bit replaced a lot of old tar and gravel roofs years ago, and many of those are now due for work. Across South Orange and nearby towns like Vauxhall, East Orange, Union and Short Hills, older buildings may still have built-up roofs under a layer of mod bit, which is why the core cut matters, so a check of laps and flashings every year or two catches small trouble early.
For modified bitumen roofing in South Orange, NJ or nearby towns like Vauxhall, East Orange, Union and Short Hills, call (973) 858-1859 to reach a roofer who covers your street.
How the weather here affects roofs around South Orange
Cold winters bring snow, ice and a long stretch of freezing nights. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, which is how ice dams form and back water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. Most homeowners in South Orange, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why act early
Smaller repairs
Small roof problems caught early usually stay small repairs.
Local knowledge
Local roofers see the same roofs and storm damage across South Orange and nearby towns.
Know what happens next
Ask the roofer about the cause, the options and the estimate before work starts.
Modified Bitumen Roofing FAQ
What is the lifespan of a torch-down roof?
Expect roughly 15 to 25 years from a well-installed modified bitumen roof. Good drainage, intact granules and sound flashings push it toward the long end. A reflective coating applied before the cap sheet wears out can extend its life.
Can a mod bit roof be coated?
Coating an aging cap sheet is a common way to add years to a mod bit roof. The roof is cleaned, repaired and often primed so asphalt oils do not stain the coating. Reflective coatings keep the roof cooler and slow granule loss.
How does mod bit compare to tar and gravel?
Both use asphalt, but the plies and surfacing differ. Built up roofs stack felts and hot bitumen with gravel on top, and mod bit uses two or three factory-made sheets with granules. The polymer sheets stay flexible in cold and are easier to repair.
Is torch-down roofing safe?
Fire risk with torch-down comes from the flame during installation, not the finished roof. Safe practice includes not torching directly on wood, keeping extinguishers on the roof and watching for smoldering after the flame is off. Self-adhered sheets give the same kind of roof without a torch.
Can modified bitumen be installed over an existing roof?
The existing roof decides that. 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.
More questions? Call (973) 858-1859
Often needed together
Flat Roof Replacement
Tearing off or recovering a worn flat roof and installing a new membrane, insulation and edge metal, and new flashing at every wall, curb and drain.
Learn moreFlat Roof Repair
Repairs for leaking flat roofs, from punctures and seams to clogged drains and wet insulation, after the real leak source is found, not guessed.
Learn moreTPO Roofing
Heat-welded TPO membrane for flat and low-slope roofs, with seams welded into one watertight sheet.
Learn moreCommercial Roof Replacement
Commercial roof replacement phased around tenants and business hours, with nightly tie-ins to keep the building dry.
Learn more
Looking for something else?
See all roofing servicesGet modified bitumen roofing help in South Orange
Call now for South Orange modified bitumen roofing and help in the towns around it.