Flat Roofing

Read all about the different types of Flat Roofing Services below

PVC Roofing Polyvinyl Chloride

• PVC Single-Ply Roofing has been in the Residential Roofing market since the mid-1960’s, originating in Germany and spreading throughout Europe making its way to the US in the mid-1970’s
• PVC roofing offers low maintenance solutions for residential roofing
• PVC Membrane Roofing (Polyvinyl Chloride) is a sheet produced in several manufacturing processes which are commonly reinforced with polyester, glass-fiber or scrim. The PVC sheets are manufactured in 45mil to 90mil thickness the most common systems are based upon 60mil PVC Systems and 80mil PVC Systems
• PVC materials are available in several colors: White and Grey being most common, however Bronze, Tan and other colors are available
• PVC roofing systems are most often installed Rigid Insulation Panels and can be Mechanically Fastened, Fully Adhered or even Ballasted depending upon the systems design

Thermal Plastic Roofing

Although other Thermal Plastic Single-Ply Roofing formulations are available only PVC and TPO will be addressed herein as they are the most common in the Pacific Northwest. Architects, Engineers, Asset Management and Building Management in need of system consultations are asked to call or email

TPO Roofing Thermoplastic Olefin

• TPO Single-Ply Roofing (Thermoplastic Olefin) is manufactured in sheet form using lamination in addition to other techniques
• TPO can be installed in the same manner as PVC
• TPO has some chemical resistance that standard PVC does not inherently possess
• TPO carries a lower price point and commonly used as the most cost effective of the modern Single Ply Membranes

EPDM Roofing Ethylene Propylene Diene Monomer Rubber

• EPDM is a rubberized membrane in the Single-Ply Roofing family
• EPDM can be Mechanically Fastened, Fully Adhered or Ballasted

Modified Bitumen Roofing Systems

• Commonly referred to as “Torch Down Roofing” as its predominately installed using the torch method
• These systems are very similar to BUR systems on applications. However most residential applications do not benefit from the multilayered protection found in a proper BUR System. Residential applications are usually discovered with only mid-ply or top-sheet applications. Our staff has noticed a large segment of the residential market converting to PVC/TPO systems due to lack of education and improper installation techniques eroding market confidence in Modified Bitumen Roofing System

Built-Up Roof (BUR) / Torch Down Roofing

• These systems are commonly found on envelopes with a history of installation dating back more than 100 years. Sometimes referred to “Tar and Gravel” roofs. There are Hot and Cold systems which can be a Ballasted Roofing System or Non-Ballasted Roofing System as per design:
• Multi-Layer Design: layers of bitumen, felts, fabrics and mats create a water resistant barrier which provides excellent water proofing
• Fire and Wind Resistance: Class-A fire ratings and high wind-ratings for your envelope
• Economical: when weighing the options of modern Thermal Plastic Roofing Systems vs BUR Systems the cost advantage is usually in favor of BU

Low-Slope Metal

• Roofing systems with a grade panel below 3” to 0.25” per foot may benefit from the use of Mechanically Hemmed Standing Seam Metal Panel. As discussed in Metal Roofing Vertical Seam Metal Panels have a variety of applications for your residential roofing requirements. The Mechanical Hem can be Single Hem or Double Hem based upon panel type and roof

Coatings (Roofing Restoration Systems)