What is the Difference Between Built-Up Roofing and Single-Ply Roofing for Flat Roofs?

When it comes to flat roofs, property managers have two main options: built-up roofing (BUR) and single-ply roofing. Both are designed to protect the interior of a building from the elements, but they have different advantages and disadvantages. In this article, we'll explore the differences between BUR and single-ply roofing systems, so you can make an informed decision about which one is right for your commercial building. A built-up roofing system is installed using alternating layers of bitumen and reinforced fabric. Property managers can choose three, four or five layers depending on their needs and budget.

This type of flat roof is traditionally known as BUR and consists of multiple layers of asphalt and felt or fiberglass carpets. These layers are applied alternately and then covered with a layer of gravel or a reflective coating. BUR is an affordable, durable option that can last up to 30 years with proper maintenance. However, it requires professional installation and can emit harmful fumes during installation. Single-ply roofing systems are thinner and lighter than built roofs, ranging from 45 to 120 millimeters.

Nowadays, they are commonly made of EPDM (ethylene propylene diene monomer), PVC (polyvinyl chloride), or TPO (thermoplastic polyolefin) rubber, all of which have their own benefits and drawbacks. This type of flat roof is installed by gluing the layer of material to the board underneath, welding the seams and gaskets with hot air, or by mechanically attaching it to the roof covering with fasteners and barbed plates. Constructed and modified bitumen roofing systems are generally designed for flat roof or low-slope structures. While both can withstand adverse weather conditions and harmful UV rays, they differ in terms of design, application, advantages, and life expectancy. A common cause of punctures in all types of single-layer roofs is debris or hardware (such as nails or screws) that remain in the roof and are then stepped on, creating small holes through which water can leak. However, selecting the right material for your flat roof can be a challenge, as different materials have different costs, durability, and maintenance requirements. The thermoplastic olefin (TPO) roof is a single-layer roof membrane that is made from a mixture of rubber and plastic materials.

The ethylene propylene diene monomer (EPDM) roof is a single-layer roof membrane that is made of a synthetic rubber material. Polyvinyl chloride (PVC) roof is a single-layer roof membrane that is made of a synthetic plastic material. Ethyl ketone ester (KEE) roof membranes are new systems developed to improve PVC roofing technology, as PVC breaks down over time as plasticizers evaporate from the material. If you're looking for the best commercial roofing contractor in California for installation, repair and maintenance services, contact Applied Roofing Services today at 714-632-8418 or request a quote online.