Flat Roof

Trained and experienced in installing all types of commercial roofing systems
The Modern Way

Flat Roofing the Modern Way

Flat roofing is not actually flat; it has a very low slope—between 1/4 to 1/2 inch per foot—so that it drains water. But such a low slope holds snow and water much longer than a steeply pitched roof and therefore needs a very different material to stay watertight. While standard sloped roofs typically have shingles that are overlapped like fish scales so that water slides over them, a flat roof is designed as a continuous, or monolithic, surface that can hold some standing water for a limited time.Flat roofs are an aesthetically interesting and energy-efficient alternative to traditional sloped roofs. Flat roofs are generally versatile, easier to maintain, and more energy-efficient than most sloped roofs, so new home builders, in particular, enjoy the lower cost of long-term ownership.


Thermoplastic polyolefin (TPO) is the fastest-growing segment of the commercial roofing industry. TPO membranes are ENERGY STAR®-qualified, and Cool Roof Rating Council (CRRC)-certified and have been directly attributed to a reduction in energy use and cooling costs for buildings in warm, southern climates.
Cost: $$-$$$$
Life Span: 30 yrs
Wind Resistance: N/A
Pro’s: Durability. High resistance. Energy efficient. Easy maintenance.
Con’s: Quality variations. Seams. Thickness disparities.


EPDM single-ply membranes have been the commercial roofing industry’s material of choice for nearly half a century. Today, Modern Roofers offers the most high-performance, energy-efficient, sustainable, and innovative line of EPDM membranes and accessories on the market. From Factory-Applied Tape (FAT®) for stronger, dependable seams to the industry’s only ENERGY-STAR®-qualified EPDM membrane, no one offers the versatility and performance like Carlisle.
Cost: $$$-$$$$
Life Span: 50+ yrs
Wind Resistance: 60-120 mph
Pro’s: Affordable. Eco-friendly. Fire resistant. Lower energy costs. Longevity.
Con’s: Installation cost. Fragile. Not as appealing.


Polyvinyl chloride (PVC) is a trusted membrane that has been providing decades of waterproofing protection in Europe and North America. PVC’s popularity stems from its dependable, heat-welded seams, high reflectivity, superior physical attributes, and resistance to water, chemicals, grease, fire, and punctures. Modern Roofer’s Sure-Flex PVC feature ENERGY STAR® qualification, contribute to LEED® credit requirements, and are CRRC-rated and Title 24 compliant. The Sure-Flex product line is one of the broadest in the industry, offering a PVC membrane for virtually any low-slope roofing specification.
Cost: $$$-$$$$
Life Span: 25 yrs
Wind Resistance: 100-130 mph
Pro’s: Durability. Long lasting. Chemical resistance. Element resistance. Eco-friendly.
Con’s: Labor cost. Cold climates.