Main Roofing System Options for Commercial Flat Roofs

Vancouver commercial building owners have a lot of options when it comes to commercial flat roofing systems. Here’s a brief overview of some of the most popular and effective.

Main roofing system options

• Inverted

• 1-ply systems

• Built-up roof (BUR)

• Torch-on roof

Inverted Roof

An inverted roof is also known as an upside-down roof because the insulation layer is on top of the waterproofing layer. A ballast, like stones or even a garden holds down the insulation. This makes inverted roofs exceptionally durable to roof traffic, UV damage, and wear on the waterproofing layer. The entire structure is designed to last significantly longer than traditional systems, so you save thousands on replacement. Inverted roofs are an affordable option that are quick to install for an experienced commercial flat roofing company in Vancouver.

1-ply systems

1-ply systems use a single membrane of synthetic polymer that is both flexible and durable. It comes in 3 types: EPDM, TOP and PVC. The latter two are light-coloured membranes. Light colours reflect heat better than darker materials therefore this type of system has a higher thermal emittance rating. 1-ply systems are significantly lighter than other types and are a very popular choice for Vancouver flat roofs.

Built-up roof (BUR)

BUR roofing systems consist of several layers of roofing material topped by gravel ro a reflective coating. BUR roofs have been a traditional roofing system in our city. They are budget-friendly, however they tend to have shorter lifespans and need replacing every 10-15 years.

Torch-on roof

Torch-on roofs are installed in layers of SBS membrane and heat-activated modified bitumen. Though more expensive to install, torch-on roofing systems are incredibly durable and long-lasting with superior waterproofing capabilities. When installed correctly by a professional commercial flat roofing company in Vancouver, torch-on roofs can last upwards of 25 years or more.

Laurentian Roofing is Vancouver’s trusted commercial flat roofing company. Have a question about which systems are ideal for your building and budget? Give us a call as we are happy to help! We’ll also give you a free estimate! 604-345-7663