The built-up roof system is unquestionably one of the most classic roofing options. This style of roof, which has been around for over a century, has a well-deserved reputation that makes it an almost obvious choice for many home builders. Of course, this isn’t a perfect roofing solution because it has certain drawbacks, but many people who have chosen it have found it to be extremely effective. If you would like to learn more about this, please check out Norfolk Roofing Association
The built-up roof is typically favoured in high-traffic areas and where the roof may be subjected to mechanical abuse. With its numerous layers and gravel surfacing, the built-up roof’s membrane is often thicker and stronger than most other roofing alternatives. Because this is such a popular choice, it is usually simple to find a contractor in most areas that can handle both installation and repair of this roof type.
The fundamental drawback of built-up roofs is their inflexibility. The roof could be harmed as a result of structural or thermal movement. To protect the roof from damage caused by contraction, a lengthy building would require additional roofing support. Built-up roofs may be harmed by the compression caused by cold temperatures or the stretching caused by hot temperatures. If these characteristics are prominent in a given location, extreme caution is required.
Modified-bitumen roofs have many of the same benefits and drawbacks as built-up roofs. However, one big benefit of this roofing option is that it works much better in colder weather. This sort of roofing was created to be flexible when the weather gets cold. They can respond to fluctuations in temperature better than a built-up roof.
Plastic-based modified-bitumen roofs (APP) and rubber-based modified-bitumen roofs are the two types of modified-bitumen roofs (SEBS and SBS). Torches are typically used to instal plastic-based membranes, whereas cold adhesives or hot asphalt are used to instal rubber-based membranes. Most modified-bitumen roofs already have granulated surfaces, making them lighter than gravel-surfaced built-up roofs. Modified-bitumen roofing can also be fitted to existing built-up roofs as cap sheets. This provides some flexibility as well as redundancy to the roofing.