Most Common Types Of Materials Used For Flat Roofs. Regardless of whether your flat roof installation and repair needs are for a commercial or residential building, there will be various things and factors to consider regarding the type of roofing material used, as well as its associated costs at the time of installation and during its useful life. There are material choices for your flat roof beyond generic ones, which will increase the reliability of the flat roof. Let’s look at the most common types of flat roofing materials available today.
Modified Bitumen Or Peel And Stick Format
Modified bitumen, or peel and stick formula, is an asphalt-based flat roofing material improved with special polymers to increase flexibility and performance. You can find them in rolls comprising a smooth or grainy surface finish and can be hot, cold, or self-adhesive applied. Peel and stick systems, or sometimes also known as mod-bit systems, are generally more expensive than other commercial flat roofing materials and can last 16 to 22 years. You can install these ceilings using several techniques determined by specific project requirements and specified materials. These installation methods include:
- Hot applied.
- Applied torch.
- Cold applied.
The polymer used in the top layer provides improved elasticity and flexibility at lower temperatures. They are also tough and energy-efficient roofing solutions, able to endure extreme temperature changes and reduce heat flow to roof surfaces. The key fault of a bitumen roof is its comparatively shorter lifespan. It can also be problematic to classify the basis of a leak in that specific roofing substrate.
Built-up roofs, or simply called “BUR” get installed using several layers of a special type of roofing material that has received saturation with asphalt and implanted in bitumen applied with a hot wipe/mop. Roofing specialists apply this roofing with a warm wipe/mop. The mixture generates a solid monolithic and glossy roof membrane.
The roofing felt / bitumen layer gets repeated in superimposed layers until the whole is two to four layers thick. Associated with other flat roof systems, these roofs are costly and take longer to install. They are also more prone to destruction from water and wind. Typically, a wear surface of finely ground stone granules gets applied over the top layer of hot tar to protect the constructed roof assembly from UV rays and weathering.
Benefits of BUR:
- Gravel is an excellent flame retardant.
- Attractive for roof windows and terraces.
- It is inexpensive.
- Provides waterproofing.
EPDM Flat Roof
EPDM (Ethylene Propylene Diene Terpolymer) is a synthetic rubber composite used on flat roofs. Commonly referred to as rubber flat roofs, EPDM has earned a reputation as a multipurpose and effective roofing solution. The EPDM is black, but it can also be white, gray, and beige.
The sturdy single-layer material resists damage from direct sunlight. EPDM can be mechanically anchored with fasteners, stone prejudiced, or glued.
The EPDM flat roof has a suitable life of over 32 years and is generally less expensive than other types of single-layer membranes.
Advantages of EPDM:
- User-friendly installation for the owner.
- EPDM flat roofing materials are compliant, lightweight, and durable.
- The material is relatively light but very resistant to scratches and tears.
- Leaks are easy to repair.
- Less expensive.
- Standard black material absorbs heat.
- It is also more prone to punctures than the other options.
PVC Flat Roof
PVC or polyvinyl chloride is a durable roofing product with a useful life of approximately 31 years. It is water and fire-resistant and is also designed to withstand high winds.
PVC roofing is a little more expensive than other single-layer flat roof materials, but it offers a wide range of benefits for the price. The extra strengthened membrane makes PVC roofs resistant to impact, water, and cracks, which generally shortens the life of single-ply roofs.
- PVC is very resilient to most chemicals.
- PVC roofs deliver long-lasting amenities in severe atmospheres.
- PVC roofs are generally planned to be extremely reflective, keep buildings cooler, decrease energy consumption, and help lessen urban heat effects.
TPO Roofs (thermoplastic polyolefin)
TPO takes many of the good features of PVC roofing. It is usually white and made from polypropylene and ethyl propylene rubbers. This very popular type of roofing is also among the best flat roofing materials to install. Not only is a TPO roof an inexpensive choice, but it also has a good 12-24 year lifespan. Moreover, these roofs have the same energy-saving qualities as PVC roofs.
- It requires less maintenance since the joints are heat-sealed to prevent leaks.
- Relatively light material and easy to install.
- Tear and scratch-resistant.
- Enhanced Waterproofing.
- Able to withstand extreme weather conditions.
Before making a final decision, it would be much better if you consult any reputable flat roofing company to clear ambiguities. Also, this is very important to have all tits & bits about roofing to make the best decision. We believe that research & consultation plays a vital role when deciding whether you should go for an entire roof replacement or any minor repair.
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