Looking at the most common types of flat roofing systems

Why the expertise and experience of a professional roofer is a non-negotiable!

Deciding on which flat roof system you opt for, will ultimately depend on a wide range of factors, such as cost, durability, climate, maintenance requirements, and intended use. This is why the expertise and experience of a professional roofer should always be a non-negotiable!

Looking at the 8 most common types of flat roofs…

1. Single-Ply Membrane Roofing: These roofing systems consist of large, single-ply sheets of roofing material that are rolled out and attached to the roof structure. There are three main types:

· PVC (Polyvinyl Chloride): A thermoplastic roofing membrane that offers excellent chemical resistance and UV protection.

· TPO (Thermoplastic Olefin): A thermoplastic membrane that combines the benefits of PVC and EPDM, known for its energy efficiency and environmental friendliness. PVC and TPO membranes collectively make up about 45% of the single-ply membrane market. Their combined energy-efficient qualities and ease of installation have led to their steady adoption in recent years.

· EPDM (Ethylene Propylene Diene Monomer): A synthetic rubber roofing membrane known for its durability.

2. Built-Up Roof (BUR): Also known as a tar and gravel roof, this system consists of multiple layers of bitumen (asphalt or coal tar) alternating with reinforcing fabrics, and topped with a layer of gravel or mineral granules. BUR roofs are durable and offer good protection against UV radiation.

3. Modified Bitumen Roofing: This is an evolution of the BUR system and involves modified bitumen sheets that are either torch-applied, cold-applied, or self-adhered. These sheets can have various reinforcement options, such as fiberglass or polyester, and they provide increased flexibility and strength compared to traditional BUR.

4. Green Roof (Vegetative Roof): This system involves covering the roof surface with a layer of soil and vegetation. Green roofs provide insulation, reduce storm water runoff, and offer aesthetic and environmental benefits.

5. Metal Roofing: While typically associated with sloped roofs, metal roofing can also be used for flat roofs. Metal roofing systems include standing seam roofs and flat-seam roofs made from materials like steel, aluminum, or copper. They are durable and offer excellent water shedding capabilities.

6. Spray Polyurethane Foam (SPF) Roofing: SPF roofing involves spraying a mixture of polyurethane foam and a protective coating onto the roof surface. This creates a seamless, insulated, and weather-resistant layer that conforms to the roof's contours.

7. Photovoltaic (PV) Solar Roofs: These roofs incorporate solar panels directly into the roofing material, allowing the roof to generate electricity from sunlight.

8. Asphalt Roll Roofing: This roofing system uses asphalt-impregnated felt or fiberglass membranes that are rolled out and typically applied to low-slope roofs or as temporary roofing solutions.