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Commercial built-up roofing (BUR) in Calgary
Commercial Roofing • Built-Up Roofing (BUR)

Built-Up Roofing (BUR) in Calgary — Multi-Ply Asphalt Systems

Durable multi-ply BUR systems for commercial flat roofs: hot-mopped or cold-applied asphalt with ply felts, flood coat & gravel or mineral cap sheet, tapered insulation designs, HD cover boards, and robust SBS flashing details. Leak-tight performance for offices, retail, warehouses, and HOAs across Greater Calgary.

3–5 PlyReinforced assemblies
Flood & GravelOr mineral cap
Tapered ISOPositive drainage
HD BoardsHail/traffic resistance

BUR Systems We Install

SystemSurfacingTypical UseSEO Keywords
Hot-Mopped Asphalt BUR Flood coat & gravel or mineral cap sheet Large flat roofs; time-tested durability hot mopped bur, asphalt flood coat, gravel roof
Cold-Applied BUR Adhesive-set plies + granulated cap Odor-sensitive or occupied buildings cold applied bur, low odor roofing
Hybrid BUR + Mod Bit Cap SBS modified bitumen cap sheet Extra puncture & UV resistance bur with sbs cap, modified bitumen cap

Scope of Work (Typical BUR Replacement)

Roof Build-Up

  • Tear-off and substrate repairs
  • Vapor barrier (as required)
  • Tapered ISO insulation layout
  • HD gypsum/polyiso cover board

Plies & Surfacing

  • 3–5 plies of fiberglass/organic felts
  • Hot asphalt or cold adhesive
  • Flood coat & gravel OR mineral cap
  • Reflective aluminum coating (optional)

Details & Drainage

  • SBS flashing at walls, curbs, parapets
  • New drains, scuppers, edge metal
  • Expansion joints & penetration boots
  • QA water-test & photo documentation
Typical Price Ranges (ballpark): BUR replacement often ranges $6.50–$12.50 per sq ft depending on tear-off, ply count, surfacing (gravel vs cap), insulation thickness, access, and detail work. Request an on-site assessment for an itemized proposal.

Our BUR Installation Process (Step-by-Step)

  1. Site audit: cores/moisture scan, drainage review, code requirements
  2. Safety plan, staging, protection of HVAC & sensitive areas
  3. Tear-off/recover per spec; deck and curb repairs
  4. Vapor layer (if required), tapered insulation & HD cover board
  5. Install multi-ply felts in hot asphalt or cold adhesive
  6. Flood coat & gravel OR install granulated/SBS cap sheet
  7. Flashings: walls, parapets, curbs, penetrations; new edge metal
  8. Drains/scuppers set; QA, cleanup, photo report, maintenance plan

Industries & Buildings We Serve

  • Retail centers, offices, schools
  • Warehouses & light industrial
  • Multifamily/HOA flat roofs
  • Public facilities & religious buildings
built up roofing BUR asphalt built-up roofing hot-mopped asphalt roof cold-applied BUR ply sheet felts flood coat and gravel surfacing mineral cap sheet modified bitumen cap over BUR base sheet and cover board tapered insulation design ISO insulation polyiso sbs modified bitumen flashing parapet wall flashings roof drain retrofit aggregate surfacing aluminum reflective coating commercial flat roof BUR BUR leak repair BUR maintenance program Calgary BUR contractor Calgary built up roofing best commercial roofer in Calgary

Built-Up Roofing (BUR) — FAQs

How long does a BUR roof last?

Well-designed BUR systems commonly deliver 20–30+ years, especially with tapered insulation, HD cover boards, and routine maintenance/coatings.

What’s the difference between gravel and cap sheet surfacing?

Flood & gravel provides UV protection and ballast; mineral or SBS cap sheets deliver a cleaner profile and simplify future maintenance or coating.

Can you recover over an existing BUR?

Often possible if moisture is low, the deck is sound, and code allows. We perform cores/moisture scans to determine recover vs tear-off feasibility.

Is hot asphalt required?

No—cold-applied BUR achieves similar multi-ply performance with low odor, ideal for occupied buildings or strict odor/heat restrictions.

Upgrade Your Commercial Roof with BUR

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