Quality Roofing Contractors.
For a Free Estimate Contact 808.842.4464
  • Get up to $500 in Referral Reward.
logo logo
  • Home
  • About Us
    • Testimonials
    • Meet the Team
    • Employment
  • Our Work
  • Our products
    • Asphalt Shingles
      • Malarkey Roofing
    • Carpentry
    • Cedar Shake Shingles
    • Commercial Roofing
    • Metal Roofing
    • Flat Asphalt Roofing
    • SPRAY FOAM INSULATION
    • Roof Coatings
      • SILICONE
      • Apoc
      • National Coatings
      • ACRYLIC
      • TRAFFIC COATINGS
    • Tile Roofing
    • Solar Attic Fans
    • Condos
  • Accessories
    • UNDERLAYMENTS
    • STAINLESS STEEL FASTENERS
    • ALUMINUM FLASHINGS
    • LEAD PIPE VENT FLASHINGS
    • POLYESTER FABRIC
    • CALLAWAY VENTING SKYLIGHTS
    • QUICK MOUNTS
    • THERMAL IMAGING
    • GUTTERING
  • Repairs
  • Warranties
    • Worksmanship
    • Material
    • Insurance
  • Blog
  • Contact Us
Quality Roofing Contractors.
For a Free Estimate Contact 808.842.4464
  • Get up to $500 in Referral Reward.
image

Modified Bitumen Flat Roofing and Repair

Modified Bitumen is an evolution of asphalt roofing. It is made from asphalt and a variety of rubber modifiers and solvents. There are several ways of connecting pieces of this material. In a heat application process the seams are heated to melt the asphalt together and create a seal. There are also hot-mopped tar applications with layered fiberglass sheets, called built-up roofing. Cold-applied adhesives and self-adhering membranes are two of the more recent options. This material is also referred to as APP (atactic polypropylene) and SBS (styrene-butylene-styrene).

MRC Roofing provides time-tested, reliable fully integrated, long lasting roofing systems in cold- or hot-applications and a range of modified bitumen performance levels; all of which provide exceptional waterproofing protection for your building.

It’s important to verify that there is positive slope in the roof structure to ensure proper drainage. Over time, wood structures with to low of a slope can sag and cause ponding conditions. Completely flat roofs or roofs with negative slope need to be re-engineered with a minimum rise over run of ¼”:12” up to a preferred 2”:12” slope.

By building code and manufacturer’s specification, a licensed contractor can not install low slope roofing on a perfectly flat roof or a roof with negative slope. Slope is best created by installing a tapered system of Styrofoam or expanded polystyrene (EPS) to the roof deck structure, ensuring positive slope to the eaves or drains. This is commonly done on both residential and commercial buildings.

Negative sloped roofs void manufacturer warranties because of ponding. This situation tends to be an issue here in Hawaii. Many architects and builders over the decades have come to Hawaii and built flat roofed homes when building codes were lax. This happened especially on Oahu. This situation cannot be repaired. This kind of situation calls for reroofing with a tapered system or coating with a water impermeable silicone coating (more cost effective).

MRC has installed thousands of low slope roofs in Honolulu county. Low-slope roofing materials have evolved as materials technology improves. MRC now installs self-adhering modified bitumen cap sheet systems with a proven track record. The life expectancy of a properly installed modified bitumen roof in Hawaii is 30 years and that life expectancy can be extended drastically with a coating of silicone.

Another tactic used to extend the life expectancy of modified bitumen roofing is proper ventilation. This can be achieved with the use of solar attic fans, installing Energy Star/CRRC rated reflective colors and choosing a cap sheet that is algae resistant.

To ensure our customers move forward with a low slope roof with a long-life expectancy, MRC provides a free inspection service with our quotes. Please give us a call.

Certainteed

808-842-4464

Free Solar Attic Fan this Month with All New Roofs and Reroofs Over $7,500
Solar Fan

Request a Roofing Quote

 
 
 

Rating: 4.8 ‎54 reviews
Pic
Bitumen Roofing
Iolani Palace
Pic
Bitumen Roofing
Iolani Palace
Pic
Bitumen Roofing
Outrigger Canoe Club
Pic
Bitumen Roofing
Outrigger Canoe Club
image

Modified Bitumen Roofing Hawaii

Watch the full video on some of our featured projects.

Hawaii Board of Water Supply Drone Video

Hydrostop Acrylic Roof Coating

image

Looking For A Factory Certified Roofing Contractor on Oahu?

MRC Roofing provides the highest quality roofing services and craftsmanship for residential, commercial and industrial facilities in Honolulu.

Request for info on Repairs: Re-Roof, Currently Leaking, Roof Type: Asphalt, Tile, Wood, Metal.

Contact our friendly Oahu roofing contractors for an expert, free consultation today!

← Metal Roofing Spray Foam Insulation→
image
Emergency Roofing

MRC performs emergency temporary roofing after hurricanes and other emergencies!

Wind and home icon
MRC Roofing

"Trust the experts at MRC Roofing for all your roofing repair, replacement and installation needs in Honolulu."

1041 Puuwai Street
Honolulu
HI 96819

License # BC-31624
License # C-31624

Classifications held:

  • C-01 Acoustical and insulation contractor
  • C-42 Roofing contractor
  • C-42a Aluminum and other metal shingles contractor
  • C-42b Wood shingles and wood shakes contractor
  • C-42c Concrete and clay tile contractor
  • C-42e Urethane foam contractor
  • C-42g Roof coatings contractor
  • C-55 Waterproofing contractor
Contact

Contact our friendly Oahu roofing contractors for an expert, free consultation today!

808.842.4464

mrc@mrcroofing.com

Connect with Us
Email a Friend
© Copyright 2016 MRC Roofing - All Rights Reserved