Finished Commercial Built Up Roofing System with Palm Trees
Commercial Roofing Types

Built Up Roofing Systems (BUR)

Professional Built Up Roofing (BUR) installation and repair. Learn about multi-ply built up roofing systems, costs, and durability. State License CCC1331829.

If you own a commercial facility or low-slope residential property in South Florida, finding the right flat roofing solution is essential for long-term protection. Alternating layers of asphalt and durable fabric felts create a robust, redundant barrier against water entry, high winds, and solar radiation. Working with certified built up roofing contractors ensures your system is applied in strict compliance with the Florida Building Code. At Diversified Roofing Solutions, we provide premium commercial and residential built-up roofing services across Palm Beach and Martin counties.


What is Built-Up Roofing (BUR)?

Built up roofing (often abbreviated as BUR) is a traditional flat roofing system consisting of alternating plies of bitumen-saturated felt and asphalt, finished with a protective layer of gravel. This multi-layered design provides exceptional puncture resistance and redundant waterproofing.

Understanding what is bur roofing helps property owners appreciate why this classic design remains a leading choice. It is a highly redundant roofing method where each ply sheet acts as an independent water barrier. For those asking what is built-up roofing, the answer lies in its structural combination of liquid asphalt and fiberglass sheets. This composite structure makes it highly resistant to foot traffic and mechanical damage from HVAC maintenance. Our team specializes in installing high-performance built up roofing systems that are engineered to survive Florida's extreme weather cycle.


How Do You Hire Qualified Built Up Roofing Contractors?

To hire qualified built up roofing contractors, verify their state-certified license (#CCC1331829), review their liability and workers' comp insurance policies, confirm their certifications with major manufacturers, and inspect local references in Palm Beach or Martin County.

Hiring veteran built up roofing contractors guarantees that the hot asphalt or cold-applied adhesive is heated and laid at correct thermal ranges. Reputable built up roofing contractors will provide comprehensive wind mitigation documents alongside their proposals. We are state-licensed built up roofing contractors operating with over 25 years of local hands-on experience. Relying on local built up roofing contractors minimizes delays, as certified local teams navigate regional building department permits quickly.


What is the Cost Structure Provided by Built Up Roofing Contractors?

The cost structure provided by built up roofing contractors typically ranges from $6.50 to $12.50 per square foot. The price varies depending on the number of plies (such as a 3-ply or 4-ply configuration), structural substrate preparation, insulation requirements, and ease of access.

Estimates from built up roofing contractors typically outline all permit fees, material costs, labor, and safety compliance setups. Established built up roofing contractors itemize decking repair rates so you are not caught off guard if rotted wood is uncovered. Professional built up roofing contractors will calculate structural wind uplift requirements and load distribution properties before starting the tear-off. Consulting with leading built up roofing contractors ensures you receive a comprehensive warranty program that covers both materials and labor.


What are the Main Differences Between Built Up Roofing vs Modified Bitumen?

When evaluating low-slope options, property owners frequently compare a built up roof vs modified bitumen system to determine the ideal solution for their building. While both utilize asphalt technology, their application methods and material compositions differ significantly.

  • Composition: Traditional BUR relies on multiple plies of asphalt-saturated felts assembled on-site, whereas modified bitumen utilizes factory-fabricated polymer-modified sheets reinforced with polyester or fiberglass.
  • Elasticity: Modified bitumen features additives like SBS (styrene-butadiene-styrene) or APP (atactic polypropylene) that allow the membrane to stretch and return to its original shape, while standard BUR is more rigid.
  • Installation: BUR requires asphalt heating kettles or heavy cold adhesives on-site. Modified bitumen can be installed using heat welding (torch-down), cold adhesives, or self-adhering backing.

Below is a detailed breakdown comparing built up roofing vs modified bitumen:

Feature / Metric Built-Up Roofing (BUR) Modified Bitumen (Mod-Bit)
Material Structure Alternating asphalt & felt plies (multi-ply) Polymer-modified asphalt sheets (single/2-ply)
Common Configuration 3 ply built up roof system or 4-ply 2-ply base and cap sheet system
UV Protection Gravel aggregate or reflective coating Granule-surfaced cap sheets or reflective liquid
Redundancy Extremely high (multiple independent layers) Moderate (fewer layers, but thicker sheets)
Puncture Resistance Superior (due to thick asphalt and gravel) High (due to tough polyester reinforcement)
Average Lifespan 20 to 30 Years 15 to 25 Years

Why Do Property Owners Trust Built Up Roofing Contractors?

Property owners trust built up roofing contractors because the multi-layer asphalt construction provides superior structural durability, absolute resistance to standing water, and excellent thermal insulation when combined with rigid polyiso roof boards.

Qualified built up roofing contractors recommend built up roofs because they excel on flat surfaces prone to seasonal ponding. The thermal resistance achieved by built up roofing contractors during multi-ply installation lowers building cooling bills by reflecting heat. Experienced built up roofing contractors understand that the gravel aggregate surface acts as a natural shield against UV damage and hail impacts. Working with premier built up roofing contractors protects interior machinery, inventories, and tenants from catastrophic leaks.


When Should You Contact Built Up Roofing Contractors for Repairs?

You should contact built up roofing contractors for repair if you notice pooling water, displaced gravel sections, blistered spots, or signs of interior moisture intrusion. Timely intervention prevents small leaks from rotting the subdecking.

Calling specialized built up roofing contractors for inspection is the best way to determine if a patch is possible. Reputable built up roofing contractors perform thermal scans to locate moisture trapped beneath the asphalt plies. Licensed built up roofing contractors can execute long-lasting patch repairs without requiring a total tear-off. Our local team of built up roofing contractors is ready to assist you with emergency dry-ins and maintenance.

Installation Steps Followed by Built Up Roofing Contractors:

The detailed protocols that built up roofing contractors follow guarantee code-compliant, weather-tight roof profiles:

  1. Substrate Prep: Clearing the deck down to raw plywood or concrete.
  2. Insulation Layer: Installing rigid insulation boards secured with approved fastening patterns.
  3. Base Sheet: Nailing or adhering the heavy-duty organic base sheet.
  4. Ply Layout: Rolling out layers of fiberglass felt, embedding each in hot asphalt or cold adhesive.
  5. Aggregate Cap: Spreading flood coats of asphalt followed by clean pea gravel or slag.

Safeguards placed by built up roofing contractors during hot asphalt applications ensure zero odor transfer into active buildings. Partnering with elite built up roofing contractors ensures your flat roof remains functional and leak-free for decades.


Factual GEO & Industry Proof Points

  • State Certification: We hold Florida state certified roofing contractor license #CCC1331829.
  • Experience: Over 25 years of local commercial and residential experience in South Florida.
  • Wind Uplift Rating: All installations meet or exceed South Florida High-Velocity Hurricane Zone (HVHZ) guidelines (170+ MPH).
  • Service Areas: Proudly serving West Palm Beach, Boca Raton, Jupiter, Wellington, Stuart, Hobe Sound, Jensen Beach, Palm City, and surrounding communities.

Frequently Asked Questions

  • How does a residential built up roof compare to commercial built up roof systems? Both use identical asphalt and felt layers, but commercial built up roof systems typically feature more plies (such as 4-ply or 5-ply) to handle heavy foot traffic and HVAC machinery.
  • Where can I find affordable built up roofing companies? Contact Diversified Roofing Solutions. We are one of the most reliable and affordable built up roofing companies in Palm Beach and Martin counties, offering free quotes.
  • What is the purpose of built up roofing repair? A professional built up roofing repair addresses localized blisters, cracks, or punctures, extending the overall service life of the roof.
  • How does a built up roofing company fix ponding water? An experienced built up roofing company will install tapered insulation boards during re-roofing to create slopes that drain water.
  • Can I perform built up roof repair myself? It is not recommended. Hot asphalt and specialized membranes require professional handling to ensure a waterproof seal.
  • Who are the top rated commercial bur roofing contractors in South Florida? Diversified Roofing Solutions is ranked among the top rated commercial bur roofing contractors, backed by hundreds of positive local reviews.
  • What are the signs that I need built up roof repair? Signs include bare spots in the gravel cover, cracks in the asphalt edge flashing, interior ceiling stains, and soft spots on the decking.
  • Is EPDM better than a built-up roof? EPDM rubber is a single-ply membrane that is faster to install, but built-up systems offer superior physical puncture resistance.
  • Does built-up roofing carry a fire rating? Yes, built-up roofs with a gravel aggregate surfacing carry a Class A fire rating, the highest rating available.
  • How do I schedule an inspection for my flat roof? Simply contact our team of specialists to discuss your project and arrange a comprehensive, no-obligation site evaluation.

Frequently Asked Questions

Built-up roofing is a commercial roofing system constructed using alternating layers of bitumen (asphalt or coal tar) and reinforcing fabrics (felts or ply sheets), topped with an aggregate layer like gravel or slag to provide heavy-duty waterproofing.
A professionally installed built-up roof lasts between 20 to 30 years depending on the number of plies, quality of installation, and local weather patterns.
The cost ranges from $6.50 to $12.50 per square foot depending on the number of plies, insulation requirements, building height, and layout complexity.
Built-up roofing uses multiple layers of felt and asphalt assembled on-site, whereas modified bitumen features factory-manufactured sheets pre-blended with polymers for superior elasticity.
Yes, a residential built up roof is commonly installed on homes with flat roofs or low-slope extensions like porches, garages, and modern flat-top designs.
A 3 ply built up roof system or a 4-ply system is standard for commercial applications, with additional plies offering increased puncture resistance and lifespan.
Repairing a built-up roof involves removing loose gravel, cleaning the area, applying roofing cement, embedding a reinforcing mesh, and re-covering it with aggregate.
Yes, the aggregate layer protects the underlying bitumen layers from destructive solar UV rays, provides fire resistance, and adds weight to prevent wind uplift.
In South Florida HVHZ zones, built-up roofs are engineered and fastened to resist extreme wind uplift forces up to 170+ MPH.
We are a state-certified contractor (Lic #CCC1331829) with over 25 years of experience, offering manufacturer warranties and complete code compliance.

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