JBN Roofing of Texas · A Division of The JBN Group, Inc.
Modified Bitumen (Mod Bit)
Modified Bitumen (Mod Bit) delivers a tough, flexible commercial roof. Built-up roofing's tougher descendant: asphalt sheets factory-armored with rubber or plastic, so they flex instead of cracking.
Modified Bitumen (Mod Bit) is what happened when the roofing industry took the proven idea behind built-up roofing and fixed its weak points in the factory. The asphalt in each sheet is modified before it ever reaches the roof: blended with rubber (SBS) for flexibility or plastic (APP) for heat resistance and toughness, then reinforced with fiberglass or polyester. The result is a thick, tear-resistant sheet that bends with the building instead of splitting, and it can go down four honest ways: torch-applied, cold adhesive, hot asphalt, or self-adhering rolls. JBN Roofing of Texas installs Modified Bitumen (Mod Bit) across North Texas. To price it for your building, call the Denton team at 469-340-0838.
What the modification means
Modified Bitumen (Mod Bit) Fixes Old Asphalt's Two Flaws
Plain asphalt ages two ways: it gets brittle in the cold and soft in the heat. Modifying it attacks both problems at the chemistry level, before the sheet exists.
SBS modification blends rubber into the asphalt, and the sheet behaves like it: it stretches, flexes with building movement and temperature swings, and springs back instead of tearing, which is why SBS sheets forgive the small motions that split plain asphalt. APP modification blends plastic polymers in, producing a sheet that stands up to ultraviolet light and Texas heat without softening or flowing, with a surface that takes foot traffic and weather hard.
Both come reinforced and thick, usually installed as a two-ply system with a base sheet and a granule-surfaced cap sheet, so a Modified Bitumen (Mod Bit) roof carries built-up roofing's layered redundancy in a cleaner, factory-controlled package.
Sounds like your building's next roof? Call 469-340-0838 and ask for a mod bit consultation.
Roofing services
Services Around the Mod Bit
Mod bit connects to the rest of the commercial line: its built-up ancestor, the full systems comparison, inspections that grade what is overhead now, and the coatings, leak, and replacement paths every working roof eventually needs.
Modifiers and methods
Two Chemistries, Four Ways Down: The Modified Bitumen (Mod Bit) Menu
A mod bit quote is really two decisions: which modifier is in the sheet, and which application method puts it on the roof. Here is every option in plain terms.
SBS: The Rubber Blend
Styrene-butadiene-styrene rubber makes the sheet elastic. SBS mod bit stretches and recovers, tolerates building movement and cold snaps, and is the forgiving choice for roofs that move: older structures, decks that flex, and buildings whose temperature swings are wide. It installs by cold adhesive, hot asphalt, or self-adhering rolls.
APP: The Plastic Blend
Atactic polypropylene plastic makes the sheet heat-tough and UV-hard. APP mod bit resists softening in August, shrugs off sunlight, and takes a torch beautifully, its seams melting into a single fused layer. It suits sun-blasted roofs and owners who want torch-welded seams with no kettle on site.
Torch-Applied
The classic APP method: a torch melts the sheet's underside as it unrolls, fusing it to the layer below and welding each lap into one continuous surface. It demands a trained, fire-disciplined crew and a roof where open flame is acceptable, and in return it produces some of the strongest seams in roofing.
Cold Adhesive
Sheets are set in cold-process adhesive: no flame, no kettle, no hot-asphalt odor drifting into the building. Cold-applied systems suit occupied buildings, schools, and hospitals, anywhere hot work is a problem, and they pair naturally with SBS sheets.
Hot Asphalt
The built-up way: SBS sheets mopped down in hot asphalt, exactly like a BUR ply, with the modified sheet upgrading every layer. It suits buildings and crews already set up for kettle work and owners who want the redundancy of mopped plies with modern sheet toughness.
Self-Adhering
The sheet carries its own adhesive under a release film: peel, position, roll, and the bond forms. Self-adhering systems are the cleanest and quietest to install, kind to occupied buildings and tight schedules, and they remove flame and fumes from the job entirely.
Match mod bit to building
Which Buildings Belong Under Modified Bitumen (Mod Bit)
Mod bit is the middle path of commercial roofing: tougher and more forgiving than a single sheet, cleaner and quicker than a full built-up stack.
Small and mid-size commercial roofs are its home ground, where two plies of modified sheet give real redundancy without a kettle crew's full production. Occupied buildings that cannot take flame or fumes point to cold-applied or self-adhering SBS. Sun-hammered roofs with heavy foot traffic point to APP and its granule armor. And owners replacing an old BUR often land here: the descendant system, installed with familiar craft.
Every pattern has exceptions, which is why the recommendation waits until the building itself has been read.
- Small to mid-size roofs: two-ply redundancy, modest production
- Occupied, flame-sensitive buildings: cold or self-adhering
- High sun and traffic: APP with granule surfacing
- Old BUR replacements: the natural successor system
The company
JBN Roofing of Texas, a Division of The JBN Group, Inc.
The JBN Group, Inc. is a family-owned general contracting company based at 125 Old Alton Drive in Denton, Texas, founded in 1996. JBN Roofing of Texas is its roofing division, working from Suite 8 at the same address and serving commercial property owners across North Texas. The group carries an A+ rating with the Better Business Bureau, and the roofing division is fully insured. Office hours run Monday through Thursday 9:00 AM to 5:00 PM, Friday 9:00 AM to 4:00 PM, and Saturday 10:00 AM to 2:00 PM Central. Reach the roofing team at 469-340-0838 or sales@jbnroofingoftexas.com.
How the system gets chosen
Inspection First, Torch Second
Modifier and method are building decisions. The inspection makes them with the roof's own facts, not a crew's habit.
The crew reads the building first: roof size and slope, deck type and how much it moves, what goes on inside the building, because flame, fumes, and noise are operational questions, and the sun and traffic the finished roof will take. An existing mod bit or built-up roof gets read for what can stay and what must come off, with core cuts where the layers are in question.
The recommendation then names the modifier, SBS or APP, and the application method, with one written price. When two combinations genuinely fit, both get priced with the tradeoffs stated, so the choice is the owner's, made with the whole picture.
- Deck movement and building use read first
- Flame, fume, and noise limits settled before method
- Modifier and method both named in the quote
- Close calls priced both ways, in writing
- Existing layers core-checked on re-roof projects
Read the Building
Size, slope, deck, interior use, and the existing roof are documented with photos and measurements.
Name the Combination
Modifier and application method are selected from the building's facts and limits.
Price It in Writing
One written price covers tear-off, base and cap sheets, flashings, and disposal: the whole job, up front.
Install and Seal
Base and cap sheets go down by the chosen method, laps sealed, and every detail flashed and checked.
The honest fine print
Where Modified Bitumen (Mod Bit) Earns and Owes
Mod bit is a genuinely tough roof, and like every system it has edges. Both sides belong in the quote conversation.
The earnings: real two-ply redundancy, tear resistance that shrugs off traffic and dropped tools, flexibility that ages gracefully, and four installation methods that adapt to almost any building's limits. The owing side: seams are only as good as the crew that fused or adhered them, torch work demands a building that can accept open flame, and a mod bit roof costs more than a single-ply sheet of the same size because there is simply more roof in it.
Ask any bidder, us included, which modifier and which method they are quoting, and why. A quote that just says mod bit has not answered either question. Call 469-340-0838 and ask us first.
Where we work
Mod Bit Installs Across North Texas
From our Denton office, JBN Roofing of Texas installs modified bitumen roofs for commercial buildings across the northern Dallas-Fort Worth area. Torch-applied APP where the sun is brutal, self-adhering SBS over occupied space, mopped plies where the kettle is welcome: each property gets the combination its own facts argue for.
Own or manage a property outside that area? Call 469-340-0838 and ask. If we cannot serve the building well, we will tell you plainly.
What a Mod Bit Quote Names
- The modifier: SBS rubber or APP plastic
- The application method, and why it fits
- Base sheet and cap sheet specs
- Granule surfacing and color
- Flashing and edge detail work
- One written price for the whole job
Straight answers
Modified Bitumen (Mod Bit) FAQs
What is modified bitumen roofing?
It is asphalt roofing upgraded in the factory. The asphalt in each sheet is blended with rubber (SBS) or plastic (APP) and reinforced with fiberglass or polyester, producing a thick, flexible, tear-resistant sheet. Modified Bitumen (Mod Bit) descends directly from built-up roofing and is usually installed as a two-ply system: a base sheet plus a granule-surfaced cap sheet.
What is the difference between SBS and APP mod bit?
SBS is modified with rubber, so the sheet stretches and flexes with building movement and cold weather; it installs by cold adhesive, hot asphalt, or self-adhering rolls. APP is modified with plastic, so the sheet resists heat and ultraviolet light and stays stable in summer; it is typically torch-applied, with seams fused by flame. The building's movement, sun exposure, and hot-work limits decide between them.
How is mod bit installed?
Four ways: torch-applied, where a flame fuses the sheet and its laps; cold adhesive, with no flame or kettle; hot asphalt, mopped like a built-up ply; and self-adhering, where the sheet's own adhesive bonds as the release film is peeled away. The method is chosen for the modifier and the building, and a proper quote names both.
How long does a mod bit roof last?
A well-installed two-ply mod bit roof commonly serves twenty years and beyond. Its thickness and granule armor take traffic and weather that wear thinner systems faster, and flexibility keeps seasonal movement from splitting it. Later in life, a compatible coating can restore the surface and extend the run, provided the plies below are dry and sound.
Can mod bit go over an existing built-up roof?
Sometimes. If the old roof is dry, sound, and within the deck's load limits, a mod bit system can be installed as a recover. If core samples find wet insulation or failed plies, adding layers would bury the problem, and tear-off becomes the honest path. The inspection answers it with cores, not guesses.
Is torch-applied roofing safe for my building?
With a trained crew and fire discipline, yes, and it has been done safely for decades. It does require the building to accept open flame on the roof, which some owners and insurers restrict. Where flame is off the table, cold-applied and self-adhering systems deliver the same sheet with no torch involved, and we will recommend them instead.
SBS · APP · Four Ways Down
BUR's Toughness, Upgraded in the Factory
An inspection reads the building, the recommendation names the modifier and the method, and the price arrives in writing. That is the whole process, and it starts with a call.