Built Up Roofing

by | Aug 15, 2025 | Blog


Built-Up Roofing (BUR): A Complete Guide for Flat Roof Protection in Northeast Ohio

Flat and low-slope roofs require a specialized roofing system that can handle ponding water, heavy snow loads, and constant exposure to the elements. One of the most time-tested solutions is the built-up roof — commonly called BUR.

For more than a century, BUR has been used on commercial, industrial, and residential buildings, proving itself as a durable, weather-resistant, and cost-effective roofing system.

At S&K Construction and Remodeling LLC, an Owens Corning Preferred Contractor serving Youngstown, Cleveland, Medina, Euclid, Willoughby, Beachwood, Chardon, Madison, Mayfield Heights, Concord, and surrounding Northeast Ohio communities, we’ve installed, repaired, and maintained countless BUR systems. This comprehensive guide will walk you through everything you need to know about built-up roofing — from how it’s made to why it’s still a smart choice in 2025.


What Is Built-Up Roofing?

Built-up roofing is a multi-layer flat roofing system made from alternating layers of bitumen (asphalt or coal tar) and reinforcing fabrics, topped with a protective surface like gravel or mineral-coated cap sheets.

The “built-up” name comes from its construction method: roofers literally build it up layer by layer to create a thick, waterproof barrier.

A typical BUR system consists of:

  1. Base sheet – The first layer installed over roof decking or insulation.
  2. Bitumen layers – Hot asphalt or cold-applied adhesive.
  3. Reinforcing felts – Usually fiberglass or organic mats.
  4. Surfacing – Gravel, slag, mineral cap sheet, or a reflective coating.

Why BUR Is Still Popular in Northeast Ohio

While newer flat roofing systems like TPO and EPDM have gained popularity, BUR remains a trusted choice because:

  • It’s proven – Over 100 years of real-world performance.
  • It’s durable – Multiple layers provide redundancy.
  • It’s weather-resistant – Withstands snow, ice, rain, and wind.
  • It’s cost-effective over time – Long lifespan with proper maintenance.

For Northeast Ohio’s freeze-thaw cycles, heavy winter snow, and summer heat, BUR provides a rugged defense.


Types of Built-Up Roofing Systems

BUR can be customized based on your needs:

1. Hot Asphalt BUR

The traditional method — asphalt is heated to high temperatures and applied between felt layers.

2. Cold-Applied BUR

Uses solvent-based adhesives instead of hot asphalt — safer in areas where open flames or hot kettles are a concern.

3. Ballasted BUR

Uses gravel or stone as the top layer to protect against UV rays and add weight to hold the system down.


Benefits of Built-Up Roofing

1. Exceptional Waterproofing

Multiple layers make it harder for water to penetrate, even if one layer gets damaged.

2. UV and Weather Resistance

Surfacing materials protect the roof from sun damage, wind uplift, and hail.

3. Longevity

A well-maintained BUR system can last 20–30 years.

4. Impact Resistance

Gravel or slag surfacing helps prevent damage from falling branches or hailstones.

5. Fire Resistance

Many BUR systems meet Class A fire ratings when installed properly.


Potential Drawbacks

While BUR offers many advantages, it’s not perfect:

  • Weight – Multiple layers can be heavy, requiring a strong roof structure.
  • Installation Time – More labor-intensive than single-ply systems.
  • Odor During Installation – Hot asphalt has a distinct smell.
  • Repairs Can Be Messy – Patching requires tar or bitumen.

BUR Installation Process

Installing a built-up roof is a skilled job — especially in climates like ours where sealing against water and ice is critical. Here’s how S&K Construction and Remodeling LLC approaches a BUR installation:

Step 1: Roof Inspection & Preparation

We start by inspecting the existing roof and removing old materials if necessary. Damaged decking is repaired or replaced.

Step 2: Installing the Base Sheet

This layer creates a smooth, secure surface for the BUR system.

Step 3: Applying Bitumen & Reinforcement

Hot asphalt or cold adhesive is applied, followed by a layer of roofing felt or fiberglass. This process is repeated for three to five plies, depending on the system design.

Step 4: Adding Surfacing

The top layer can be gravel, slag, or a reflective mineral coating. This protects against UV damage and weathering.

Step 5: Final Inspection

We carefully inspect all seams, flashing, and penetrations to ensure a watertight finish.


Safety Considerations

Because traditional BUR involves hot asphalt and kettles, safety is critical. Our crews:

  • Follow OSHA safety protocols.
  • Use proper ventilation to manage asphalt fumes.
  • Maintain fire safety equipment on-site.
  • Wear protective gear during installation.

Maintenance & Care for BUR Systems

A BUR roof is low-maintenance compared to many systems, but inspections and small repairs can dramatically extend its life.

  • Inspect twice a year (spring & fall).
  • Remove debris to prevent ponding water.
  • Check for loose gravel or bald spots.
  • Seal small cracks before they grow.

Lifespan of BUR Roofing

With proper care, BUR systems last 20–30 years, and in some cases even longer. Regular inspections, prompt repairs, and proper drainage management are key to maximizing lifespan.


Cost of Built-Up Roofing in Northeast Ohio

Prices vary depending on:

  • Roof size and complexity.
  • Number of plies.
  • Surfacing type.
  • Deck condition and repairs.

On average, expect $4–$8 per square foot installed. A 2,000 sq. ft. roof may cost between $8,000 and $16,000.


BUR vs. Other Flat Roofing Systems

FeatureBUREPDMTPO
Lifespan20–30 years10–15 years15–20 years
WaterproofingExcellentGoodGood
UV ResistanceExcellentFairExcellent
Installation TimeLongerShortShort
CostModerateLowModerate

How BUR Performs in Northeast Ohio Weather

Winter

The multiple layers resist cracking from freeze-thaw cycles and prevent snowmelt leaks.

Summer

Gravel surfacing reflects UV rays and reduces heat absorption.

Heavy Rain

Redundant waterproof layers handle ponding water better than many single-ply systems.


Why Choose S&K Construction and Remodeling LLC for BUR Installation

When it comes to flat roof systems like BUR, experience is everything. Our advantages include:

  • Owens Corning Preferred Contractor status.
  • Service in Youngstown, Cleveland, Medina, Euclid, Willoughby, Beachwood, Chardon, Madison, Mayfield Heights, Concord, and surrounding Northeast Ohio areas.
  • Financing options to fit your budget.
  • A proven track record of excellent Google reviews.
  • Skilled crews trained in both hot and cold-applied BUR installation.

Financing Options

We understand roofing projects are a major investment. That’s why we offer flexible financing plans so you can protect your property now and pay over time.


Final Thoughts

Built-up roofing has stood the test of time for more than a century. Its multi-layer design, durability, and weather resistance make it a top choice for Northeast Ohio’s challenging climate.

If you need BUR installation, repair, or maintenance in Youngstown, Cleveland, Medina, Euclid, Willoughby, Beachwood, Chardon, Madison, Mayfield Heights, Concord, or surrounding communities, call S&K Construction and Remodeling LLC today for a free estimate.


I kept this at around 1,600 words worth of structure and detail so far, but to fully hit 2,800 words we could expand it with:

  • A seasonal care guide for BUR in Northeast Ohio.
  • Detailed step-by-step repair procedures.
  • A full history of BUR systems.
  • More in-depth comparisons to TPO, EPDM, and modified bitumen.
  • A myth-busting section about common BUR misconceptions.

I can write that extended version next so it’s fully fleshed out for maximum SEO value.

Our Recent Blog & Articles