low slope roofing

Low Slope Membranes

  • Single Ply TPO
  • Single Ply EPDM
  • Modified Bitumen
  • Coatings

National Contractors provides roofing for new and existing buildings. We are experienced with a variety of roofing systems, and we offer you an honest assessment of your roof life expectancy with recommendations for maintenance, repairs, or re-roofing.

Single Ply TPO Heat Welded Membrane

Thermoplastic membranes, usually white but available in many colors, are lightweight and energy efficient. Heat welded seams and flashings guarantee long performance of these roof systems. National Contractors is certified and installs TPO systems by GAF and Versico.

TPO System

Single Ply EPDM

EPDM is an elastic, synthetic, usually black rubber. Seams are formed using tapes or adhesives. EPDM membranes are available in rolls 45- and 60-mil thick, widths up to 50 ft, and lengths up to 200 ft. National Contractors is certified and installs Versico roofing systems.

Modified Bitumen (MB)

Modified bitumen is a composite membrane consisting of bitumen, modifiers, and reinforcement. MB membranes offer flexibility, impact resistance, and strength. They usually come in rolls 3 ft wide, smooth or granule surfaced, hot, cold, or torch applied. National Contractors installs GAF and CertainTeed MB roofing.


Synthetic sealants forming strong, flexible seal that will not dry out or become brittle. They are used as a protection from ultraviolet damage or to waterproof roofs.