Commercial Roofing

Built-Up Roofing (BUR) in Calgary

Time-tested multi-layer roofing systems with over 100 years of proven performance. Hot asphalt or cold-applied BUR systems for maximum durability on commercial flat roofs.

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3-4 Ply

Multiple Layers

30-40

Year Lifespan

100+

Years Proven

24/7

Emergency Service

BUR System Types

Built-up roofing offers multiple configurations to match your building's requirements.

Gravel Surfaced

Traditional flood coat with aggregate provides UV protection and excellent durability. Ideal for low-traffic roofs.

Smooth Surfaced

Coated with reflective aluminum or elastomeric coating. Easier maintenance access and cooler surface temperatures.

Cap Sheet BUR

Modified bitumen cap over BUR base for enhanced flexibility. Combines proven performance with modern materials.

BUR System Components

Our built-up roofing systems use high-quality materials for maximum performance and longevity.

System Layers

Base sheet (mechanically fastened or adhered)
Multiple plies of fiberglass or organic felt
Hot asphalt or cold adhesive between plies
Flood coat with aggregate or cap sheet

Insulation & Accessories

Polyiso or EPS rigid insulation
HD cover board protection
Edge metal and fascia
Pitch pockets and drain assemblies

Installation Process

Roof inspection and core sampling
Tear-off or substrate preparation
Insulation and cover board installation
Base sheet application
Interply mopping with hot asphalt
Flood coat and aggregate embedding
Flashing and edge detailing
Final inspection and documentation

Service Type	Price Range
BUR Recover	$6.00 – $10.00/sq ft
Full BUR Replacement	$8.00 – $15.00/sq ft
BUR Repairs	Contact for quote

BUR Roofing FAQs

Common questions about built-up roofing systems.

Why is it called "built-up" roofing?

BUR systems are literally "built up" from multiple layers of felt and asphalt. Each layer adds redundancy—if one layer is compromised, the layers beneath continue protecting the building.

Does BUR still use hot asphalt?

Traditional hot-applied BUR uses heated asphalt between plies. Cold-applied alternatives using adhesives are also available for buildings where hot work isn't practical.

Can BUR handle foot traffic?

Yes—gravel-surfaced BUR is one of the most traffic-resistant roofing systems available. The aggregate provides excellent protection against foot traffic, tools, and equipment.

How do you find leaks in a gravel roof?

We use electronic leak detection, infrared scanning, and core sampling to pinpoint moisture intrusion. Once located, we can repair specific areas without replacing the entire roof.