Built-Up Roofing (BUR): a Go-To Solution for Chicago Flat Roof
BUR or tar and gravel roofs have been a reliable solution for commercial and residential buildings with low-slope or flat roofs in Chicago and Chicago suburbs. This roofing system is made up of multiple layers of bitumen and reinforcing materials (usually 2-5 plies). These are asphalt or hot coal tar, reinforced with additional layers of fabrics or felt for strength. Originally, manufacturers used tar for flat roof, but the roofing technologies evolved, and with asphalt, BUR roofs became more durable and easier to install. Today, it is one of the most popular roofing options. This durable roof coating may last for decades, depending on the materials used. So, this article will provide responses to all whys? you may have if you are planning a roof replacement for your property in Illinois.
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Whatβs Inside a Built-Up Roof System? Letβs Go Layer by Layer!
BUR roof membrane represents a multi-layered roofing construction. BUR system consists of three main components: special ply sheets, bitumen and surface coating.
- Bitumen (asphalt or tar). Bitumen acts as the βglueβ that bonds the layers of a BUR system. It can be cold or hot. Hot bitumen is heated until it melts and flows to glue layers effectively during installation. However, it emits harmful fumes when heated. Cold bitumen is not heated and is applied with tools like a squeegee or sprayed onto surfaces. If you’re looking for a roofing company close to me, they can help with the proper installation techniques and ensure safety during the process. This is a safer alternative for both workers and the environment.
- Reinforcing fabrics. These are sheets of organic felt or fiberglass. Multiple layers of this reinforcement provide additional strength, waterproofing properties and puncture resistance, especially for neighborhoods in Chicago.
- Protective top coating. The top layer is made of gravel or ballasted asphalt. These stones are heavy enough to hold the roof in place. This cover makes the roof safe to walk on and provides strong protection for the layers beneath from UV rays, debris, and other weather elements.
Choosing the Right Type of Built Up Roof for Your Building in Chicago
When selecting a BUR type of roofing, you can consider options like 3-ply and 4-ply configurations. Actually, the more layers, the thicker and more durable the roof. A 4-ply BUR system, for example, provides added strength and is excellent for buildings in harsher climates or with heavy rooftop equipment, mostly in community areas in Chicago. Each layer adds cost but also increases resistance to wear and extends the roofβs life. Building owners should consult with roofing contractors to find the best fit for their climate, budget, and specific requirements.
Essential Steps for BUR Roof Installation
The roofing process has several steps needed to follow when working on homes in the Chicago area:
- The base. First, craftsmen from a roofing company close to me must prepare the roof deck. It must be clean, dry, and structurally reliable. Then, they install a base sheet made of felt or insulation board to create a solid foundation.
- The foundation. Multiple plies of asphalt-saturated felt are applied, creating a waterproof barrier. Each layer is adhered to the previous one using either hot bitumen or cold adhesive.
- The cap sheet. A final layer of asphalt or a bituminous material is applied to the top of the built-up layers. This cap sheet provides additional protection against the elements.
- The surface layer. A layer of gravel or minerals is applied to the cap sheet to protect it from UV rays, wind, and hail. This layer also helps to stabilize the roof and prevent water pools.
If you’re looking for experts, roofing contractors near me can help ensure this protective layer’s proper application and maintenance.
Top Benefits and Downsides of A Built-Up Low-Slope Roof
BUR systems are time-tested for flat or low-sloped roofs in the roofing industry but, like other alternatives, have strong and weak points. Their benefits are:
- Long lifespan. A properly installed BUR system can last for up to 30 years.
- Excellent water protection. BUR provides a strong waterproof barrier and keeps moisture out.
- Well-sealed seams. BUR systems have tightly sealed and reliable seams.
- High UV protection. It shields the roof and building from harmful UV rays and improves energy efficiency when you rely on professional roofing services in Chicago areas for proper installation and maintenance.
- Easy maintenance. BUR systems require minimal care after installation.
- Impact resistance. BUR offers strong protection against impacts from debris or severe weather.
- Fire resistance. BUR systems are not afraid of fire.
- Safety. The gravel provides an excellent grip and makes the surface excellent to walk on, especially in bad weather.
However, BUR flat roofs have some downsides as well:
- Weight. BUR systems are quite heavy. A structure needs to be strong for these multiple layers.
- Tricky installation. Hot asphalt or tar is used during the installation process. It can be handled by a Chicagoland roofing company with special skills and equipment.
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The Price of a BUR Roof in ILβ What Costs to Expect?
A standard 2,000 sq ft roofing project will cost approximately $15,000- 22,000. This sum includes materials and installation. The above table gives only a rough estimate as prices vary hugely. Your final sum will depend on the type of building, roof construction and commercial roofing contractor you choose. For homeowners in the Chicago suburbs, the cost can fluctuate based on local factors as well.
Is a flat built-up roof more expensive than other options? Letβs compare built-up roof vs. modified bitumen. It is more expensive due to the extra layers and difficult installation process. TPO and PVC are also more budget-friendly options than BUR. For accurate pricing, you may want to consult roof estimating services near me.
You Can Prolong the Life of a BUR Roof with Proper Care
You must care for your built-up roof if you want it to serve for long. How to avoid repair or replacement and prolong the life of this multi-layered roofing system?
- Regular inspections. Always check for any damage. If you spot cracks or bubbles, immediately take measures.
- Timely cleaning. Remove debris – leaves or twigs can cause water penetration and leaks.
- Leak repairs. Any damage must be immediately repaired before the issue grows.
- Trimming of trees. Do not allow branches from trees to hang over the roof.
- Protective coating refreshment. Apply new coatings every 5-10 years to keep the roof in good shape.
- Checking gravel on flat roof. This top layer must be in good condition to protect the other layers from wear. BUR may wear faster if the top layer is damaged.
- Drainage system checks. It will prevent water pools on the roof.
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A BUR Roof Is Still in Great Demand
Built-up roofing remains a top choice for flat roof among the best roofing products for commercial and industrial buildings. Consider it, too, if you prioritize durability and weather resistance. Its multi-layered, protective structure copes well with heavy foot traffic, UV rays, and harsh weather. You will get reliable protection for decades if you choose the right BUR materials, trust the job to expert installers, and provide regular maintenance. If you are looking for a long-term roofing solution for your property, BUR is a wise investment. Contact comprehensive roof services near you for professional installation and maintenance.
FAQ
What is a built-up roofing bur?
Built-up roofing (BUR) is a flat roof made from layers of fabric, bitumen (asphalt or tar), and a protective top layer. Itβs durable and waterproof.
What is another name for built-up roofing?
A built-up roof is also known as a tar and gravel roof.
How many layers is a built-up roof?
BUR roofing system is made of 2-5 layers or plies. These are asphalt or hot coal tar, reinforced with fabrics or felt for strength.
What is the difference between a built-up and a membrane roof?
A built-up roof (BUR) has multiple layers of materials like tar and gravel, and a membrane roof uses a single layer of material, like rubber or plastic.
How thick is built-up roofing?
Built-up roofing (BUR) is usually 2 to 4 inches thick. Its thickness depends on how many layers are added and the materials used.
How long does a built-up roof last?
A built-up roof (BUR) usually lasts 15 to 30 years. Its lifespan depends on factors like the quality of materials, the number of layers, climate conditions, and maintenance.