Roof Types

Roof Types

When it comes to getting a new flat roof it is important you get the one that is right for your building and budget. Different roofing materials determine how durable, long-lasting and expensive a roof is. Listed below are the flat roof options we offer. Take a look to determine which one will fit your needs best!

Single Ply PVC and TPO

These are the most affordable roofing options out there for commercial or industrial buildings. PVC (Polyvinyl Chloride) and TPO (Thermoplastic Polyolefin) Single-ply membranes are great at keeping water from entering the roofing system and building. They are advantageous for their light weight making them an ideal option for old buildings with asphalt roofs, where installing a new membrane adds extra, undesirable weight onto the building. Lighter construction materials in new projects also lower the cost. The PVC membrane particularly has a low flammability, making it a great option for buildings with high standards for fire safety. PVC and TPO are both highly durable, with polyester thread reinforcement which also adds elasticity. They are easy and quick to install, and the standard white or light gray colouring of both membranes additionally helps lower costs to air conditioning in the summer due their reflective properties which redirect heat from the sun. A PVC membrane has an expected lifespan of 30 years, while a TPO membrane can last up to 50 years, making both options a justified investment!

Double Ply Modified Bitumen

Modified Bitumen (MB) is a modified asphalt which has plastic and rubber-like qualities, sometimes referred to as a rubberized roof. It is tough, uniform in thickness, water resistant and tear resistant due to its reinforcement with fiberglass and/or polyester, along with modifiers like SBS and APP. MB sheets are also better at handling a broader temperature range, making them ideal for scorching summers and freezing winters. On average this option last 10 years, although its longevity greatly depends on the quality of the installation. If you chose this option, do not try to save money by choosing a cheaper company, or the poor workmanship may cost you more in the long run!

Four Ply Built-Up Roof

As a tried and tested method, Four Ply Built-Up Roofs (BUR) have been around for over a hundred years. BURs were the most common roofing option until the invention of the single ply. This roofing system uses several layers of most commonly tar and gravel over the roof to keep out water. Due to its multiple layers, even if one is damaged the roof as a whole does not lose function, making it a reliable flat roofing option. The gravel used is a resistant material good at handling harsh weather and requires little upkeep compared to other materials.

Single Ply EPDM Flat Roofing

In commercial roofing, EPDM (Ethylene Propylene Diene Monomer) is the most popular. This is a rubber based roofing technology that is durable, fexible and resistant. The rubber properties of EPDM make the roof flexible, which prevents cracks due structural movement. It is weather resistant, showing little wear over time and can handle extreme temperatures. It is easy and minimally disruptive during installation, and requires little maintenance. Its lifespan is an estimated 12-25 years.

Metal Roofing

Metal roofs have their appeal because they are non-combustible, they redirect the sun’s heat away from the building (lowering air conditioning costs), and because they are durable. They are also easily customizable around flashings and other irregularities of the roof. This is a more permanent option to roofing, as metal roofs are not as easily replaced, nor do they need to be due to their durability.