FLAT ROOF REPLACEMENT

TPO & MODIFIED BITUMEN ROOFING FOR FLAT ROOFS

MI Roofing Contractor offers flat roofing options to commercial and residential customers throughout Northern Michigan. The type of flat roofing we install is somewhat arbitrary and up to you in most instances. However, there are a few options that could be better suited to certain seasons, climates or budgets.

TPO

Thermoplastic Polyolefin is a single-ply roofing membrane that lasts 5+ years longer than other flat roof materials. TPO is replacing modified bitumen in residential flat roofs because of its longer life. It is one of the fastest growing commercial roof applications. TPO systems are made up of a single layer of synthetics and reinforcing scrim that can be used to cover flat roofs.

TPO membranes are manufactured in sheets that are 10, 12 or 20 feet wide and 50 to 100 feet long. Modified bitumen materials are 3 feet wide and 33 feet long, so TPO roofs offer less seams that can leak. TPO is bright white and has gained industry acceptance with its natural reflective surface to reflect UV rays (as reported by the National Roofing Contractors Association [NRCA]).

MODIFIED BITUMEN

This type of flat roof involves taking a roll of single-ply roofing material that has been integrated with a mineral-based shield and attaching it to the roof surface in a peel and stick application. Modified Bitumen is commonly used for residential and commercial flat roofs where size, cost, aesthetics and UV protection are not as important.

There are two options for the material used:

• The traditional torch-down adhesive that must be heated by a torch to adhere to the roof substrate
• The newer Peel-and-Stick flat roofing material that requires no torch and is much easier to apply