How is modified bitumen different from built-up roofing?

Modified bitumen generally uses factory-made reinforced sheets; built-up roofing forms a field-applied assembly from alternating bitumen and reinforcing felts.

Can these systems be installed without open flame?

Yes. Depending on the specification, cold-applied, hot-asphalt, and self-adhered systems can avoid torch application.

What do roof cores reveal?

Authorized core cuts can identify layer count, insulation type and thickness, deck, and visible moisture conditions at the sample location.

Can a built-up roof be coated?

Some sound, prepared assemblies can receive compatible coatings, but wet insulation, unstable surfacing, and failed details must be addressed first.

Modified Bitumen & Built-Up Roofing

Modified bitumen and built-up roofing use layered redundancy to protect demanding low-slope buildings. MADE evaluates the deck, surfacing, insulation, flashing, and safe application method before defining the work.

Layered protection
Multiple plies or reinforced sheets provide redundancy across the field and critical transitions.
Durable surfacing
Mineral, gravel, or coated surfaces can be selected around traffic, exposure, drainage, and maintenance needs.
Detail flexibility
Experienced crews can form robust transitions around curbs, walls, drains, and irregular roof geometry.

What this covers

SBS and APP modified bitumen
Built-up asphalt roofing
Cold-applied and self-adhered options
Flashing and edge rehabilitation
Core sampling and repair planning

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How it works

A controlled path from assessment to closeout

01
Open and inspect
Use records, visual findings, and selective cuts where authorized to understand the existing assembly.
02
Select application
Choose compatible plies, surfacing, insulation, and hot, cold, torch, or self-adhered methods under project constraints.
03
Build in layers
Control laps, adhesion, flashing, surfacing, and drainage while maintaining site safety and documentation.

Questions