Flat roofs are becoming a very popular type of modern roofing system. They provide more space for people to use. A flat roof can be used for parties, gardens, etc.

Flat roofs can withstand all sorts of weather. They don’t require much maintenance. They have a decent lifespan, too. So, there are nice benefits.

What are the most common types of flat roofs? Find out here…

#1 Built-Up Roofs

built up roof

These types of flat roofs are also called bur roofs, and they usually have an average service life of more than 100 years. The “built-up” used in this type of flat roof is commonly tar or gravel. There are multiple layers of built-up flat roofs, and these layers are made of melted tar and asphalt. The topmost layer of the built-up flat roof is pea gravel that is placed above the tar layer. The topmost layer protects the house from UV rays and reflects sun back into the atmosphere. This helps keep the house protected from harsh climatic changes.

#2 Modified Bitumen Roofing

This type of flat roof is composed of asphalt material made into 3-foot wide rolls and layered on the flat surface. Just like other flat roofs, bitumen flat roofs are also made up of multiple layers. The bitumen flat roof is designed using hot tar, cold adhesive solvent (to create bonding), torching of the tar layer, and/or peel & stick sheets with self-adhering capabilities. The topmost layer of a bitumen flat roof is similar to that of shingle roofs with granulated shingles.

#3 The Rubber Membrane Roof

rubber membrane roof

The rubber membrane roof is also called the EPDM roof; It can be easily installed. Rubber flat roofs have a ballasted appearance. One way to install a rubber flat roof is to make use of glued sheets or adhering substances. You can easily identify whether the flat roof is a rubber membrane roof or not — they have a charcoal black color and are usually easy to spot. Moreover, they are stretching over the insulation board completely.

#4 TPO Flat Roofing System

Usually, TPO flat roofs are used by modern-day houses to enhance the look of the house. TPO refers to Thermoplastic Polyolefin, and this material resembles the positive characteristics of the PVS roofing material. The color of the TPO flat roof is generally white and it is fabricated or modified with polypropylene. These flat roofs are highly durable, and they can withstand harsh climatic conditions and keep the house cool. TPO flat roofs are fully recyclable so they are considered eco-friendly.


Flat roofs are in high demand nowadays. Most people assume all flat roofs are the same, but as you just read, there are different flat roof options. If you have any questions about flat roofs, please call Arko Exteriors of Blaine, MN, at 763-434-2756.