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Built-Up Roofing: Common Problems and How to Repair Them

Albert October 25, 2021 2 min read

Built-up roofing is one of the most common and tried and tested commercial roofing systems. They became popular in the 1970s and are extremely durable, dependable, and long-lasting. Today, BUR roofing systems account for a significant portion of the roofing market in North America, worth around $700 million. These roofs are also popular because of the large number of flat roofs in North America. Nevertheless, the pros and cons of BUR roofing do require professional installation.

Among its advantages, built-up roofing is extremely durable and widely used by building owners and architects. This roof substrate is easy to apply and has several advantages. This is why it is a popular choice for many homeowners, architects, and roofers. However, some disadvantages should be kept in mind. Here are some common problems and how to repair them. Hopefully, these common problems can be easily resolved. However, it is best to consult a roofing contractor if you find any damage to your built-up roof.

The lifespan of built-up roofing varies, but some types can last for up to 40 years. Generally, BUR will need only minor maintenance. You should inspect your roof once a year to make sure it is intact, but you won’t have to replace it until it breaks or deteriorates. This type of roof is also easy to repair and requires very little maintenance. However, you should be aware that the longevity of built-up roofing depends on its design, installation, and materials. Cold adhesive lasts for a longer time, while hot adhesives tend to break down more quickly, causing damage to the materials.

While built-up roofing is extremely durable, it is susceptible to developing cracks over time. Cracks are caused by imperfections in the materials used, as well as normal weathering. Cracked built-up roofing can be repaired by cleaning the area and reapplying a sealant, typically bitumen, asphalt, or roofing cement. Cracks and blisters will require a professional roofer to be repaired properly, but they can also be repaired with roofing cement.

A built-up roof is made of layers of asphalt and special fabric. Usually, Ply IV roofing is a two-ply membrane, while Ply VI roofs use a four-ply membrane. While the four-ply built-up roof requires more layers, this type of roof is durable and low-maintenance. The only downside is the risk of cracking and other problems. However, the benefits outweigh the cons, and built-up roofing is an ideal choice for many homeowners.

There are two main types of built-up roofing. Ballasted asphalt is the most popular, providing a textured, visually appealing finish. Additionally, ballasted asphalt has added fire retardant properties. However, “cold” built-up roofing is more environmentally friendly and doesn’t emit hazardous fumes. Additionally, it is easier to install and remove during inclement weather. Damaged built-up roofing may show blisters, ripples, or cracks. These damages can be repaired by removing the affected materials and patching the roof.

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