Get to Know Your Flat Roof

Make Informed Roofing Choices

You may not think about it until you have a roofing problem, but your industrial/commercial flat roof is a complex system. The materials and techniques used to build your roof are constantly developing and changing. When you know more about what is possible and available, you will make better choices.

Flat Roof Materials and Systems

Tar & Gravel (4 Ply) A Built-Up Roofing (BUR) system of layers using an asphalt-based membrane base, organic felts, asphalt/tar top coat, covered with protective and reflective gravel Can be added to existing tar & gravel BUR systems Long lifecycle Good insulator		Modified Bitumen Membrane (2-Ply) 2 plies of rubber For roofs of all sizes Durable – suitable for high traffic roofs Cleaner, tar smoke free installation

Glass Felt Built Up Asphalt (4 ply) Asphalt BUR system using fibreglass felts Waterproof Resistant to cracks, splitting and blisters Suitable for all roof sizes		Sarnifil (1 Ply) – Thermoplastic Membranes Single ply PVC roofing Ideal for large roofs Heat-welded seams Excellent temperature and puncture resistance

EPDM (Ethylene Propylene Diene Monomer) Roof Membrane (1 Ply) Rubber membrane Suitable for projects of all sizes Environmentally friendly application Less installation equipment needed Fewer petroleum based products Less waste Wide temperature and climate tolerances Faster installation		Cold Process Roofing (1 ply) Excellent waterproofing Torch-free application Cleaner & smoke-free installation Coated with gravel for protection and reflectivity

		Inverted Systems (PMS-protected membrane system) Can employ any of the membranes described above. However, the water-proofing membrane is applied to the deck and covered with the insulation layer, a filter cloth and patio stones or large river-wash gravel. Often used in high-rise or high traffic roof situations.

Can-Sky Roofing would be pleased to explain anything you need to know about flat roofing, its materials and techniques – all in plain language – so you will have a better understanding and get more value from your flat roof.