Gravel ballasted roofs with Sikaplan® or Sarnafil® single ply membranes are conventionally installed. The single ply membrane and other roof components, including thermal insulation, are loose laid. The buildup is ballasted with a gravel layer of at least 50 mm and 80 kg/m 2.

Adding gravel to a flat roof can significantly extend its lifespan by providing protection against UV rays, fire, and mechanical damage. The gravel layer acts as a ballast, stabilizes the roofing system, and helps manage water drainage effectively.

Jan 17, 2025 · A ballasted roof uses heavy materials like gravel, stone, or pavers to hold the membrane in place, relying on weight and gravity. This method avoids adhesives or fasteners, making installation quicker and less invasive.

Jan 2, 2021 · There are two main types of BURs or tar and gravel roofing systems, modified bitumen roofs which are a mix of asphalt and rubber with a layer of gravel on top, and ballast roofing, which is a different style of larger gravel applied on top of a single-ply roofing system. Modified Bitumen Built-Up Roofing. Bitumen roofing systems are built up ...

a ballasted roof assembly involve redistributing ballast, understanding the initial requirements are essential. Any ballasted roof assembly requiring System 2 or System 3 should maintain the proper type and distribution of ballast materials, especially at the corner and perimeter zones of the roof.

Oct 25, 2023 · In this article, we will delve deep into Built-Up Roofs with Gravel, covering the details and, most importantly, its advantages for your roofing needs. Secondly, BUR can withstand challenging weather conditions such as strong …

Sep 14, 2022 · Types of built-up roofs. You can select between two types of BUR systems, modified bitumen, a composite of rubber and asphalt covered with gravel on top for durability, and ballast tar and gravel system, which is suitable for areas …

We specialize in ballasted, hot and cold BUR systems. BUR and Mod-Bit systems are similar in many ways. However, the gravel layer of BUR is what makes a big difference. Let's see what the gravel can do for your commercial building. BUR gravel layer will distribute the impact of foot traffic or large debris more evenly, softening the hit.

Aug 24, 2020 · Built-up roofing (BUR) is a seamless, semi-flexible membrane composed of 2-5 built-up layers, or plies, of coated or fiberglass-reinforced fabrics layered and finished with bitumen (asphalt, cold-applied adhesive or hot coal tar).