Commercial Flat Roof

A commercial flat roof makes sense for businesses, industries and institutions such as churches and schools. They are convenient for installing large HVAC systems, keeping them off the ground or saving interior space. They have a lower cost of construction. Most are long lasting with regular maintenance and inspection. The benefits outweigh any problems, but when aging, leaks and deterioration begin, you’ve found the contractor for expert flat roof replacement or repair.

Get a free estimate now on your commercial flat roof project
Call 314-432-6100 for replacement or repair

Flat roof construction is often the most affordable style of roof replacement. Your cost will vary depending upon:

• The size of your roof: Or, in the case of repair, the number and size of the areas needing attention on your commercial flat roof.
• The complexity of installation: A roof with few obstacles saves labor costs. HVAC units, skylights, drains and vent pipes require more cutting and precision to lay the roof around them, and require more flashing – metal strips of leak protection around the obstacles.
• The condition of your current roof: Replacement flat roof construction generally requires removal and disposal of all layers. Labor costs are accelerated by the need to remove and reconstruct quickly, before rain gets in.
• The final cost variable is the material you choose. Here are examples of the commercial flat roof materials we install and repair:

Built up roof (BUR)
A built-up roof involves laying down several layers of tar and water resistant materials, with a top coat of gravel. These roofs can be called “tar and gravel” or “ballasted”. Ballasted means the covering of rock or gravel holds the roofing material down. Owners get up 10 to 20 years of service from this type of commercial flat roof.

Membranes
Synthetic rubber (EPDM) is a reinforced covering. Hot air is used to weld the membrane in place. These materials “get better with age”; they cure to their ultimate strength. This commercial flat roof is especially beneficial on industrial buildings because it resists chemicals in the air; it will not crack or peel. An EPDM roof system has a life expectancy of up to 20 years and can be installed in one piece, eliminating joints where roof leaks sometimes occur.

Modified Bitumen is a membrane AND a built up roof.
Asphalt, and plastic or rubber, combine for built-up layers of protection coupled with the strength of a membrane. The surface layer is applied at the factory. Seams are bonded with heat or cold adhesives. A typical life span of modified bitumen is 10 to 20 years. These roofs can be made “reflective”, saving significant utility costs, with a final elastomeric roof coating. These white coatings reflect back up to 90% of the sun’s heat. Elastomeric coatings are an excellent commercial flat roof repair for leaks, which can be difficult to isolate in the layers.

PVC (Polyvinyl Chloride)
It’s a thermoplastic polymer that is also reflective. It has been engineered essentially without seams, because they are bonded with hot air. Additionally, plastic roofing is fire resistant.

TPO (Thermo Plastic Olefin)
TPO is a single ply of synthetic rubber. Hot air welding produces seams that are three times stronger than EPDM seams, so they are sometimes called “seamless”. They resist tears, punctures, ozone and algae. TPO is rolled out, with factory adhesive on the back. They can also be ballasted, or use mechanical attachments.

Call 314-432-6100 to get a free estimate on the commercial flat roof that’s best for your building
Call for a roof repair estimate, too.

Call us to install your commercial flat roof in St Louis, St Charles, O’Fallon, St Peters, Chesterfield, Wildwood, South County, North County and West County.