Commercial service agreements24/7 leak response

SYS-04

Modified bitumen roofing

Redundant multi-ply asphalt system that stands up to foot traffic and punctures.

Service life
20 to 25 years
Sample budget
$8.00 - $12.00/sf
Wind
FM 1-90
Warranty
Up to 20-year NDL
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How Mod bit performs in Houston

Modified bitumen gives you two or three plies of reinforced asphalt membrane with a granulated cap sheet. That redundancy is why schools, hospitals and municipal buildings with heavy maintenance traffic keep choosing it.

We install SBS systems cold-applied or self-adhered to avoid open flame on occupied buildings, and APP torch systems only where the fire watch plan and the building allow it. White granulated or coated cap sheets keep solar gain down.

Specification

ItemTypical spec
Plies2 or 3 ply
Cap sheetSBS granulated, white or coated
ApplicationCold adhesive, self-adhered or torch
Puncture resistanceVery high with redundancy
Typical crew output3,000 to 5,000 sq ft per day
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Where it fits best

We most often recommend Mod bit for these buildings and conditions.

  • Schools and municipal buildings
  • Roofs with heavy maintenance foot traffic
  • Buildings that need redundancy over sensitive spaces
  • Small to mid-size roofs with many details
Construction worker on a rooftop in İstanbul with city skyline in the background.

What our install includes

Every proposal lists these items so you can compare bids line by line.

  • Base sheet and interply
  • Cold-applied or self-adhered SBS cap sheet
  • Reflective granulated or coated finish
  • Two-ply flashings at every wall and curb
  • Cant strips and tapered crickets
  • Fire watch plan when torch work is approved
How warranties work

What to watch for

Every system has failure modes. These are the ones our service techs see most on Mod bit roofs.

  • Torch work needs a hot-work permit and a one-hour fire watch
  • Seams must be checked for bleed-out and full adhesion
  • Heavier than single-ply, so the structure should be confirmed

Mod bit FAQ

Straight answers on bids, schedules, leaks and warranties. Still stuck? Our estimating desk answers the phone.

Estimating desk

(713) 555-0234All FAQs

We default to cold-applied or self-adhered SBS on occupied buildings. Where torch work is used, it follows a hot-work permit, a fire watch and an infrared sweep before the crew leaves.

It is the modern successor to BUR: similar redundancy with factory-controlled asphalt and reinforcement, and faster installation.

Yes. Aging granulated cap sheets accept acrylic or silicone restoration coatings after cleaning and priming.

Price a Mod bit roof

Send square footage and roof age. We will survey the roof and send a written, line-item proposal.

Free roof survey · Written proposal in 5 to 7 business days (sample)

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