BUR Installation
We install multi-ply built-up roofs over insulation, with a gravel or cap sheet surface and properly sealed edges, drains, and penetrations.
Tar & Gravel Roofing
Built-Up Roofing (BUR) in Gresham
Built-up roofing offers a proven, durable solution for flat and low-slope commercial buildings, using multiple layers of asphalt and reinforcing fabric to create a waterproof membrane. Our BUR services in Gresham cover installation and repair, with careful attention to drainage planning to prevent ponding water, a common concern given the region's consistent rainfall. This multi-layer construction provides strong resistance to foot traffic and weather exposure, making it practical for roofs requiring regular maintenance access.
Our experienced team addresses common BUR issues, including blistering, cracking and seam separation, restoring waterproofing performance through targeted repairs. With a typical lifespan of 20 to 30 years, BUR systems offer reliable, cost-effective protection for commercial and industrial properties. Whether installing a new system or maintaining an existing one, we deliver thorough workmanship backed by industry-proven techniques and materials.
Get a Free Estimate
Tell us about your roof
Free, no-obligation quote.
The Basics
What is Built-Up Roofing (BUR)?
Built-up roofing, commonly known as BUR, is a traditional flat or low-slope roofing system made from multiple layers of asphalt and reinforcing fabrics, topped with a protective layer of gravel or mineral coating. This multi-layer construction, often three or more plies, creates a durable, waterproof membrane well-suited to commercial buildings and industrial properties. BUR is valued for its proven track record, excellent waterproofing capabilities and resistance to foot traffic, making it practical for roofs requiring regular maintenance access. Its lifespan typically ranges from 20 to 30 years with proper upkeep. In wetter climates like Gresham, the multiple layers provide strong protection against moisture infiltration, though proper drainage design remains essential to prevent ponding water. While installation can be labor-intensive and heavier than single-ply alternatives, BUR remains a reliable, cost-effective option for flat roofing applications where durability and waterproofing performance are top priorities for building owners.
What We Do
Built-Up Roofing (BUR) Services in Gresham
BUR Repair
We repair blisters, cracks, splits, and exposed felts, and rebuild flashing around parapets, curbs, and rooftop equipment.
BUR Maintenance & Recoating
Regular inspections, gravel redistribution, and reflective coatings help extend the life of your built-up roof and reduce cooling costs.
Installation
Built-Up Roof Installation in Gresham
We provide professional built-up roofing (BUR) installation for commercial and industrial properties across Gresham, using multiple layers of asphalt and reinforcing fabric to create a durable, waterproof membrane. Our team carefully plans drainage and slope to prevent ponding water, a key consideration given the region's high rainfall. Installation includes proper insulation, multiple asphalt layers and a protective gravel or mineral surface, creating a roofing system well-suited to foot traffic and long-term durability. BUR offers a proven track record for flat and low-slope roofs, and our experienced crews ensure precise application for reliable, long-lasting waterproofing performance suited to Gresham's demanding weather conditions.
Repairs
Built-Up Roof Repair in Gresham
BUR systems can develop issues like blistering, cracking or ponding water over time, particularly in wet climates like Gresham. Our repair services address these problems by resealing damaged sections, correcting drainage issues and reinforcing weak areas of the membrane. We inspect the multiple layers carefully, as damage can sometimes be isolated to the top layer while deeper protection remains intact. Prompt repairs help prevent moisture infiltration and extend the roof's overall lifespan. Our experienced team understands the specific maintenance needs of BUR systems, delivering repairs that restore waterproofing performance and structural reliability for commercial and industrial properties.
Know When to Call
Signs Your Built-Up Roof Needs Repair
BUR systems are tough, but they do wear out, especially where gravel has shifted and exposed the layers below. Watch for these warning signs.
- Bare spots where gravel has washed away
- Blisters or bubbles in the surface
- Cracks, splits, or alligatoring
- Standing water after rain
- Flashing pulling away from walls
- Exposed or loose felt layers
- Leaks or stains on interior ceilings
- Vegetation growing on the roof
Keep your commercial roof watertight. Book an inspection.
Book a Free Inspection
Layers of Protection
Why Built-Up Roofing Still Performs
Where a single-ply membrane has one layer between your building and the weather, a built-up roof has three, four, or even five. If the top layer is damaged, the plies below keep water out, which is a big advantage on busy commercial roofs.
The gravel surface protects the membrane from UV rays and foot traffic and adds fire resistance. The system is heavy, so we confirm the structure can carry the load, and we make sure every BUR roof we install drains properly for Gresham's rainfall.
Why Homeowners Choose It
Benefits of Built-Up Roofing (BUR)
Multi-Layer Waterproofing
Redundant plies provide backup protection if the top surface is damaged.
Durable Surface
Gravel-topped BUR handles foot traffic from maintenance crews well.
Fire Resistant
The gravel layer adds excellent resistance to fire spreading across the roof.
UV Protection
Gravel or reflective coatings shield the membrane from sun damage.
Long Service Life
A well-maintained BUR system can last 20 to 30 years.
Proven Track Record
Built-up roofing has protected commercial buildings for over a century.
Common Questions
Built-Up Roofing (BUR) FAQs
Built-up roofing is made from alternating layers of bitumen (asphalt or coal tar) and reinforcing ply sheets or felts, finished with a surface layer of gravel, a mineral cap sheet, or a reflective coating.
With regular maintenance, a built-up roof typically lasts 20 to 30 years. Keeping the gravel evenly spread and repairing blisters early makes a big difference.
Each has strengths. BUR offers multiple layers of protection and a tough surface, while single-ply membranes like TPO are lighter and quicker to install. We recommend the best system for your building, usage, and budget.
Yes. Blisters, cracks, and flashing failures can be repaired, and worn areas can be recoated. If the roof is widely saturated, replacement may be the better long-term choice.
Get a Free Estimate Today
Protect your building with a built-up roof designed for Gresham weather.