Common Flat Roof Materials

Flat Roof Materials Rocks RoofingIf you have a flat roof or you’re thinking of installing one, you have several different options for what kind of flat roof coating you want to use. There are pros and cons to each of the major flat roof types, so it’s important to understand each before you make a decision. Here’s an overview of the four most common flat roof material options:

  • Built-Up Roofs
    A built-up roof is composed of several layers of waterproof membrane, usually made of a plastic material. Between each of these layers is a layer of hot gravel or tar combined with a roofing compound. This option is the most popular because it’s also the least expensive, but the installation process can be difficult.
  • Torch-On Roofs
    Torch-on roofs are similar to built-up roofs, but instead of relying on the heat of the tar or asphalt to bond the membranes, flat roofing companies use torches to heat the membranes themselves. The heat seals the membranes together, layer by layer. Torch-on roofs are a fairly durable and reliable roofing option for a reasonable price. Membranes may be made of several different materials like thermo-plastic olefin, single-ply polyvinyl chloride and modified bitumen. Each membrane is installed as a sheet or roll.
  • Rubber Flat Roof Coating
    Robber coating is most commonly used to modernize older roofs. It can be spread over other roofing types using a roller. Rubber coating is an effective solution, but the coating is thin and the cost is high. Still, replacing a roof can take anywhere from days to weeks, so it may be worth it to cut the time down.
  • Liquid Flat Roof Coating
    Liquid coating is also used in reroofing situations, similar to rubber roofing. Roofers apply a coat over the existing coating material, then clean and patch any tears or damages to the old material. Liquid coating can be made of several materials, though some of the most common variants are petroleum-based asphalt coating and rubber-based elastomeric coating. Both have different costs and benefits, so ask your roofer which is best for your needs.

There’s no one type that works best for everyone, so collaborate with your roof contractor to find the best option for your home or business. You should also check your roof for leaks regularly and get it inspected once a year to avoid more expensive repairs.