There are a few different types of flat roofs, and knowing important information about them can help you make good decisions about repairs and maintenance.

• Build Up Roofs (also referred to as gravel roofs)

Build Up Roofs are old school now, but have been used for more than a century in the US and proved their efficiency. The application was quite complicated and involved using melted hot tar or coal pitch.

• Modified Bitumen

This type of flat roofing is similar to BUR, being composed of asphalt rolls applied either with hot tar, torched with an open flame or with cold applied solvent based adhesive.

• EPDM Rubber Roof

EPDM membranes are the most popular flat roof materials nowadays, due to their excellent qualities. They are easy to install, considering that they come in the shape of a self-adhesive membrane that must be simply stretched tight over the roof.

• Spray Polyurethane Foam Roof

This is another modern and efficient flat roofing solution, The foam is evenly sprayed on the roof and coated with a waterproofing elastomeric top coat. Easy and efficient!

• Thermoplastic membranes

These membranes are also known as PVC or TPO and can adhere to a roof similar to the EPDM membrane, but may also be attached mechanically, using screws and plates.

Find reputable roofing companies Minneapolis flat roof specialists to get more information and determine what will work best for your commercial building.