If you have a flat roof, even if it has been properly maintained over the course of its life, the time may eventually come when significant repairs, restoration or replacement are needed. When that time arrives, there are various commercial flat roof replacement options you can consider.
Built-Up Roofing (BUR)
Built-up roofing, or BUR, has been used on commercial buildings for many years. These systems are made up of multiple layers of bitumen and reinforcing materials, often finished with gravel or another protective surfacing.
The multiple layers can provide durable waterproofing and protection, but BUR systems also have drawbacks. They can be comparatively heavy, and the installation process may be more labor-intensive and disruptive than some other roofing options. Depending on the building and system design, structural considerations may also need to be evaluated before installation.
Single-Ply EPDM
Ethylene propylene diene monomer roofing, commonly known as EPDM or rubber roofing, is a single-ply rubber membrane commonly used on low-slope commercial roofs. EPDM systems are known for their flexibility and durability and have been widely used for decades.
Like other membrane systems, however, EPDM roofs contain seams, penetrations and other details that need to be properly installed and maintained. Depending on the installation method, seams may be joined using adhesives, tapes or other approved materials, and these areas can become vulnerable if the roof is damaged or maintenance is neglected.
Modified Bitumen
Modified bitumen roofing is an asphalt-based roofing system reinforced with polymers and other materials to improve flexibility and performance. It is commonly installed in rolls and may be applied using several different methods, including heat welding, hot asphalt, cold adhesives or self-adhered products.
Modified bitumen can provide a durable commercial roofing surface, but it is not immune to damage. Heavy foot traffic, dropped tools and other rooftop activity can scuff, puncture or otherwise damage the membrane, particularly if proper walk pads or protection are not used.
PVC
PVC roofing is another common single-ply option for commercial flat and low-slope roofs. It is known for its reflectivity, durability and resistance to many chemicals, oils and grease. PVC membranes can also perform well in wet conditions when the roof is properly designed, installed and maintained.
Because PVC roofing is installed in sheets, the system includes seams. These seams are typically joined using heat welding, which fuses adjoining membrane sheets together to create a strong connection. As with any roofing system, long-term performance still depends on proper installation, detailing and maintenance.
Roof Coatings and Restoration
In some cases, complete roof replacement may not be necessary at all. If the existing commercial roof is still structurally sound and is a good candidate for restoration, a properly installed roof coating system can help extend its useful service life.
Roof coatings are liquid-applied over a prepared existing roof surface and cure to form a protective membrane. Depending on the coating type and existing roof system, restoration can help seal seams, penetrations and other vulnerable areas while providing additional protection from sunlight and weather.
Reflective roof coatings can also reduce the amount of solar heat absorbed by the roof, which may help reduce rooftop temperatures and cooling demands in some buildings.
The application of a roof coating system is often less disruptive and less labor-intensive than a complete roof tear-off and replacement. Because much of the existing roof can remain in place, restoration may also reduce tear-off, disposal and landfill costs.
A properly maintained coated roof may also be eligible for future recoating, allowing the protective surface to be renewed without immediately replacing the entire roof assembly.
Roof restoration is not suitable for every roof. Wet insulation, structural deterioration, extensive damage or other underlying problems may need to be repaired before a coating system can be considered.
Finding a Commercial Roofing Contractor
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Our group works together to provide:
- Larger Base of Knowledge
- Group-Wide Accountability
- Set Standards for Service
- More Peace of Mind
No matter which roofing system is ultimately selected, the quality of the installation is an important part of its long-term performance. Choice Roof Contractor Group is made up of independent commercial roofing contractors serving businesses throughout the United States.
Participating members perform their own inspections, recommendations and roofing work. A member can evaluate the existing roof, discuss appropriate repair, restoration or replacement options and provide information about the roofing systems they install.
To contact a participating Choice Roof Contractor Group member providing services in your area, call (800) 670-5583 or visit the contact page of the CRCG website.
