Modified Bitumen Built Up Roof Archives - Stone Roofing - Rock Solid Since 1934 https://stoneroof.com/category/modified-bitumen-built-up-roof/ Commercial Roofing Contractors Los Angeles County, Pasadena, Arcadia, Monrovia, Commerce, Valencia & Santa Fe Springs. Thu, 30 Apr 2026 00:37:11 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.2 https://stoneroof.com/wp-content/uploads/2026/03/cropped-Stone-Roofing-Company-Logo-2026-32x32.jpg Modified Bitumen Built Up Roof Archives - Stone Roofing - Rock Solid Since 1934 https://stoneroof.com/category/modified-bitumen-built-up-roof/ 32 32 Citrus College Student Center https://stoneroof.com/projects/citrus-college-student-center/?utm_source=rss&utm_medium=rss&utm_campaign=citrus-college-student-center Fri, 17 Feb 2023 19:25:05 +0000 https://stoneroof.com/?page_id=8217 The post Citrus College Student Center appeared first on Stone Roofing - Rock Solid Since 1934.

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Citrus College Student Center

Glendora, Ca

Project Background

Citrus College is the oldest public community college in Los Angeles County, founded in 1915. The college is home to 16 varsity sports teams and teaches over 60 disciplines accredited by the WASC. The campus continues to grow, showing about a 60% increase in enrollment between 2006 and 2021. In addition, the 104-acre campus is currently in the process of a 10-year facilities expansion project that will change the look of the campus.

Stone Roofing was thrilled to install a new roofing system for Citrus College, this time for their 29,500 Sq. Ft. new construction Student Center project. This built-up roofing system included laying down insulation across the entire roof for a thermal resistance of R-30. On top of that is a layer of coverboard for additional insulation and rigidity. Lastly, the SBS 2-ply membrane and the reflective cap sheet were applied over the coverboard, completing the watertight roof system.

Built Up Roofing is one of the oldest and most reliable ways of installing a new roof. Modified Bitumen roofing systems create watertight barriers that perform for many years at a time due to their multiple layers of protection.

With their 80+ years of roofing experience and know-how, Stone Roofing works with all types of commercial roofing systems and is pleased to have roofed another building at the beautiful and successful Citrus College.

Project Details

SIZE
29,500 Sq. Ft.

LOCATION
Glendora, California

ROOF TYPE
Built-Up

MARKET / INDUSTRY
Education

TYPE OF SERVICE
New Construction

ROOFING SYSTEM
SBS 2-Ply Modified Bituminous Membrane with Reflective Cap Sheet over Coverboard
and Rigid Insulation

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]]> Santa Monica High School Science & Tech Bldg https://stoneroof.com/projects/santa-monica-high-school-science-tech-bldg/?utm_source=rss&utm_medium=rss&utm_campaign=santa-monica-high-school-science-tech-bldg Sun, 05 Feb 2023 19:21:50 +0000 https://stoneroof.com/projects/snak-king-9/ The post Santa Monica High School Science & Tech Bldg appeared first on Stone Roofing - Rock Solid Since 1934.

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Santa Monica High School Science & Tech Bldg

Santa Monica, CA

Project Background

Santa Monica High School is a public high school founded in 1891. Funded by Measure BB, the new $55-million Science and Technology building completed construction in 2015. Also known as the Innovation Building, the establishment features 15 science labs, 17 classrooms, 8 prep rooms, a computer lab, an auto shop, and 6 administrative offices. At the time of reveal, school district spokeswoman Gail Pinsker described that the building “represents a model of what 21st century classrooms and science labs should be.”

Santa Monica-Malibu Unified School District chose Stone Roofing Company to weatherproof the new state-of-the art Innovation Building roof. Stone Roofing installed nearly 35,000 square feet of multi ply built up roofing with an additional white reflective coating. Though not visible in the above photo, Stone Roofing also roofed in around 300 flashings for solar supports, allowing the roof to be solar-ready for any time in the future.

Applying a white reflective roof coating on top of a conventional roofing system can act as a shield against the forces of nature. This protective coating can increase a roof’s life expectancy and improve a building’s energy efficiency, thus lowering energy costs.

Stone Roofing is honored to have been a part of this noteworthy project for Santa Monica High School and to have fostered a new relationship with this fine institution.

Project Details

SIZE
3,900 Sq. Ft.

LOCATION
Santa Monica, California

ROOF TYPE
Built Up

MARKET / INDUSTRY
Education

TYPE OF SERVICE
New Construction

ROOFING SYSTEM
Multi Ply Cold Process Built Up Roofing with White Reflective Roof Coating

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Solar Ready Commercial Roof Santa Monica
Commercial Roofing Experts Santa Monica project
Santa Monica Commercial Roofing

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]]> Top Benefits of Built-Up / Modified Bitumen Roofing for California Commercial Properties https://stoneroof.com/top-benefits-of-built-up-modified-bitumen-roofing-for-california-commercial-properties/?utm_source=rss&utm_medium=rss&utm_campaign=top-benefits-of-built-up-modified-bitumen-roofing-for-california-commercial-properties https://stoneroof.com/top-benefits-of-built-up-modified-bitumen-roofing-for-california-commercial-properties/#respond Fri, 29 Jul 2022 20:25:16 +0000 https://stoneroof.com/?p=7959   As roofing systems provide a layer of protection for securing your Southern California or surrounding commercial or industrial building from the elements, for your building to be functional, it requires an effective roof as this component is primarily responsible for protecting the building, occupants and property there-in from harsh weather conditions, including extreme humidity,  [More...]

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As roofing systems provide a layer of protection for securing your Southern California or surrounding commercial or industrial building from the elements, for your building to be functional, it requires an effective roof as this component is primarily responsible for protecting the building, occupants and property there-in from harsh weather conditions, including extreme humidity, rainstorms and wind damage.

As a property owner or manager of a California building, you have a broad range of roofing materials available on the market to choose from — and one of them is the modified bitumen roofing, an asphalt-based roofing solution for flat and low-sloped structures.

The highly trained roofing specialists at Los Angeles County-based Stone Roofing Company share the top advantages of modified bitumen roofing systems below:

TOP ADVANTAGES OF BUILT-UP / MODIFIED BITUMEN ROOFING FOR YOUR CALIFORNIA COMMERCIAL PROPERTY 

Budget-Friendly, Energy-Efficient 

If you are looking to cut your energy expenses, the outermost layer of modified bitumen roofs can be treated to produce a “cool roofing” quality, increasing the solar reflectance and thermal emission features of your property. This means that your roof will have the ability to reflect sunlight and release excess heat, significantly reducing the cooling demands of your building and, therefore, reducing your utility expenses.

Pliable, Expandable Material

A pliable, flexible roofing material is critical for impact resistance as well as for withstanding temperature changes. Since modified bitumen can expand and contract without losing its original shape or cracking, it is an ideal roofing option for many different types of commercial roofs.

Tear-Resistant 

Modified bitumen is the modernized version of built-up roofing, a traditional roofing material also known as tar-and-gravel roofing. The main advantage of modified bitumen is that it offers outstanding tear resistance to roofing systems, thanks in part to its robust mixture of fiberglass and polyester reinforcement layers. This unique quality is especially beneficial to commercial buildings with high foot traffic on rooftops, such as bars and hotels.

Waterproof

Many commercial roofing companies recommend modified bitumen roofing systems as they are essentially waterproof. To note, with proper installation of several layers of this material on your roofing structure by a licensed, trusted roofing company, it is often considered one the most efficient waterproofing solutions you can choose for your commercial property.

PRO TIP: When you are looking for a roofing company for your project, take a close look at their experience and at the projects they have worked on. Do they have experience with the type of project you have? Also, what is their safety record? Taking a closer look can help you select the most reputable commercial roofing company for your project and save you unnecessary headaches during the process.

ARE YOU LOOKING FOR AN EXPERIENCED COMMERCIAL ROOFING COMPANY FOR YOUR LOS ANGELES, SAN DIEGO, SAN BERNARDINO, RIVERSIDE, INLAND EMPIRE OR ORANGE COUNTY ROOF? 

Whether your building is old or new, sloped or flat, large or small, Stone Roofing has the experience and the expertise to cover you.

Stone Roofing Company is the most trusted, leading provider of high-quality commercial roofing solutions in Southern California, offering a wide array of commercial roofing services, including roofing repair and maintenance along with roof restoration and replacement and new construction roofing services.

Using the best materials in the commercial and industrial roofing industry at the most competitive prices around, and certified by every major roofing materials manufacturer, Stone Roofing will help you pick from one of the best commercial roofing systems to meet your unique needs.

For additional information about commercial and industrial roofing in California, contact a knowledgeable Stone Roofing Company representative at (800) 31-STONE (317-8663). Click here to fill out a Free Quote request form here on our website.

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Click here to view more Stone Roofing Company Projects featuring Modified Bitumen / Built-Up Roofing.

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]]> https://stoneroof.com/top-benefits-of-built-up-modified-bitumen-roofing-for-california-commercial-properties/feed/ 0 Modified Bitumen / Built-Up 210801 https://stoneroof.com/roofing-systems/modified-bitumen-built-up-210801/?utm_source=rss&utm_medium=rss&utm_campaign=modified-bitumen-built-up-210801 https://stoneroof.com/roofing-systems/modified-bitumen-built-up-210801/#respond Wed, 04 Aug 2021 02:14:52 +0000 https://stoneroof.com/?page_id=7240 The post Modified Bitumen / Built-Up 210801 appeared first on Stone Roofing - Rock Solid Since 1934.

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Modified Bitumen / Built-Up

Built Up Roofing

Built Up Roofing consists of multiple piles of roof felts laminated together with bitumen. Built Up roof material can consist of bitumen-saturated felt, coated felt, polyester felt, or other fabrics. A surfacing is generally applied, including asphalt, aggregate (gravel or slag), emulsion, or a granule-surfaced cap sheet.

Built Up Roofing is one of the oldest and most reliable ways of installing a new roof. It was first known as composition roofing and started in the 1840’s. B.U.R.’s come in two basic types, asphalt and coal tar, with three basic components:Built Up Roofing - Rowland Installation

  1. the waterproofing component
  2. the reinforcing component
  3. the surfacing component which is used to protect the other components from the elements

The roofing membrane is protected from the elements by a surfacing layer, which can be a cap sheet or gravel embedded in bitumen or a liquid-applied coating material. The most common surface for a BUR system, particularly in the west, is a fiberglass mineral surfaced cap sheet (pictured). The west represents 40 percent of the fiberglass cap sheet market. It has a white granular look, it is cost-effective, and is relatively maintenance-free.

View a Recent Built Up Project >

Modified Bitumen Roofing

Modified Bitumen was first developed and utilized in Europe in the 1960s. This membrane is manufactured in uniform sheets composed primarily of polymer-modified bitumen reinforced with one or more plies of fabric, or ply sheets. The fabrication can include polyester, glass, or a combination of the two. When applied in roofing, the finished version may be composed of several sheets of modified bitumen and asphalt to create a uniform matrix.

When used in conjunction with a thermoplastic polymer, APP (Atactic Polypropylene), a uniform matrix is created within the modified bitumen sheets. This matrix increases the bitumen’s resistance to ultraviolet (UV) light, increases its flexibility in extreme temperatures, and increases its resistance to water penetration. This added resilience and enhanced durability under extreme conditions make modified bitumen a prime choice when there may be movement or deflection of the underlying deck of a roof.

Modified Bitumen roofing systems create watertight barriers that perform for many years at a time due to the multiple layers of protection. When built up, these layers of bitumen exhibit exceptional resistance to the conductivity of heat between the exterior and interior of the building. This generates a noticeable reduction in heating and cooling costs. The thermoplastic polymers used in the modified bitumen make it more fire-resistant as well. The technology employed in creating this roofing system makes it affordable and easy to generate as well.

View More Built Up Projects >

Why Choose Us

  • Over 90 Years of Commercial Roof Experience
  • Attention to Detail and Craftsmanship
  • Certified by Every Major Roofing Manufacturers
  • Can Repair All Commercial Roof Systems
  • Certified by Every Materials Manufacturer
  • Fully Licensed and Insured
  • Available 24/7-365 Days Per Year
  • Full-Time Safety Division
  • Friendly and Knowledgeable Technicians and Staff
  • Clean and Tidy Service
  • Fully-Stocked Vehicles
  • All Work is Time Stamped and Photo Documented

Our Latest Reviews

“Stone Roofing has completed work for our retail shopping centers and mixed-use commercial properties. They have provided preventative maintenance, leak service, and roof repairs.  Stone Roofing continually provides professional and top-notch roofing service. Thank you Stone Roofing team for the premium service that you provide.”

DJM

View More Testimonials >

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Los Angeles County Modified Bitumen / Built-Up Roofing

Built Up Roofing Service in Los Angeles & Southern California

Built Up Roofing consists of multiple piles of roof felts laminated together with bitumen. Built Up roof material can consist of bitumen-saturated felt, coated felt, polyester felt, or other fabrics. A surfacing is generally applied, including asphalt, aggregate (gravel or slag), emulsion, or a granule-surfaced cap sheet.

Built Up Roofing is one of the oldest and most reliable ways of installing a new roof in Los Angeles County, California and surrounding. It was first known as composition roofing and started in the 1840’s. B.U.R.’s come in two basic types, asphalt and coal tar, with three basic components:

Built Up Roofing - Rowland Installation

  1. the waterproofing component
  2. the reinforcing component
  3. the surfacing component which is used to protect the other components from the elements

The roofing membrane is protected from the elements by a surfacing layer, which can be a cap sheet or gravel embedded in bitumen or a liquid-applied coating material. The most common surface for a BUR system, particularly in the west, is a fiberglass mineral surfaced cap sheet (pictured). The west represents 40 percent of the fiberglass cap sheet market. It has a white granular look, it is cost-effective, and is relatively maintenance-free.

View a Recent Built Up Project >

Modified Bitumen Roofing for Los Angeles & Southern California

Modified Bitumen was first developed and utilized in Europe in the 1960s. This membrane is manufactured in uniform sheets composed primarily of polymer-modified bitumen reinforced with one or more plies of fabric, or ply sheets. The fabrication can include polyester, glass, or a combination of the two. When applied in roofing, the finished version may be composed of several sheets of modified bitumen and asphalt to create a uniform matrix.

When used in conjunction with a thermoplastic polymer, APP (Atactic Polypropylene), a uniform matrix is created within the modified bitumen sheets. This matrix increases the bitumen’s resistance to ultraviolet (UV) light, increases its flexibility in extreme temperatures, and increases its resistance to water penetration. This added resilience and enhanced durability under extreme conditions make modified bitumen a prime choice when there may be movement or deflection of the underlying deck of a roof.

Modified Bitumen roofing systems create watertight barriers that perform for many years at a time due to the multiple layers of protection. When built up, these layers of bitumen exhibit exceptional resistance to the conductivity of heat between the exterior and interior of the building. This generates a noticeable reduction in heating and cooling costs. The thermoplastic polymers used in the modified bitumen make it more fire-resistant as well. The technology employed in creating this roofing system makes it affordable and easy to generate as well.

View More Built Up Projects >

Why Choose Us

  • Over 90 Years of Commercial Roof Experience
  • Attention to Detail and Craftsmanship
  • Certified by Every Major Roofing Manufacturers
  • Can Repair All Commercial Roof Systems
  • Certified by Every Materials Manufacturer
  • Fully Licensed and Insured
  • Available 24/7-365 Days Per Year
  • Full-Time Safety Division
  • Friendly and Knowledgeable Technicians and Staff
  • Clean and Tidy Service
  • Fully-Stocked Vehicles
  • All Work is Time Stamped and Photo Documented

Our Latest Reviews

“Stone Roofing has completed work for our retail shopping centers and mixed-use commercial properties. They have provided preventative maintenance, leak service, and roof repairs.  Stone Roofing continually provides professional and top-notch roofing service. Thank you Stone Roofing team for the premium service that you provide.”

DJM

View More Testimonials >

Protect Your Asset with Modified Bitumen / Built-Up Roofing System

Schedule your free roof inspection with a Los Angeles County specialist from the team SoCal has trusted for 90 years.

  • Customized Solutions: Get tailored advice specific to your building’s roofing needs, whether it’s repair, maintenance, or replacement.
  • Cost-Saving Insights: Learn how to extend the life of your roof and avoid costly repairs through preventative strategies.
  • Expert Damage Assessment: Have an expert inspect for hidden issues after severe weather, ensuring no damage goes unnoticed.
  • Energy Efficiency Upgrades: Explore roofing options that can improve insulation and reduce energy costs.
  • Long-Term Investment Guidance: Receive professional recommendations on the best materials and solutions for long-term durability and ROI.

FILL OUT OUR FORM TO GET STARTED ⇒

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Brewery

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Choose a Commercial Roofing Contractor

View our guide on how to select a commercial roofing contractor

Learn More

Common Commercial Roofing Problems

Roof problems you can prevent with maintenance and repairs

Learn More

Benefits of Preventive Roof Maintenance

Keep your roof in problem-free and watertight condition all year

Learn More

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