TPO Membrane Roofing
TPO single-ply membrane roofing is growing in popularity as demand increases for heat-reflective and energy efficient roofing systems. It provides exceptional resistance to UV, ozone, and chemical exposure. And, the seams are welded to provide superior strength - reportedly three to four times as strong as EPDM's adhesive and tape seams. Clients who chose TPO will also benefit from its high resistance to tears, impact, punctures and its enviable flexibility, which accommodates building movement.
The size of TPO membrane varies from manufacturer to manufacturer, but usually comes in widths of six to six-and-a-half feet and one-hundred feet in length. It is available in two thicknesses, 45 mil and 60 mil., and a subdued palette (i.e., white, light gray, and black). When properly installed (i.e., fully adhered, mechanically attached, or ballasted), TPO membrane roof systems can last upwards of 20 years.
EPDM Membrane Roofing
EPDM, or "rubber roof", is the most common form of membrane roofing available. It is a single-ply membrane comprised of rubber compounds and other chemicals.
Rubber roofing comes in different mill thicknesses (i.e., 45 mill, 45 mill reinforced, 60 mill [the most common], 60 mill reinforced, and 90 mill) and widths. DJ Hall Roofing installs it on all different types of decking (i.e., concrete, wood, steel, lightweight gyp decking, and tectum decking), using one of four methods: full adhered, mechanically fastened, batten-in-seam, or ballasted.
To install a fully-adhered rubber roof, roofing contractors use a bonding adhesive, which can be adhered to many different sub-straights and insulations (i.e., fiber-board, perlite, iso-cyanurate, and EPS). Most rubber roofs will be secured with insulation plates and screws. The height and configuration of the building will determine the number of fasteners per sq. ft. and the placement of the fasteners on the insulation.
There are several written details used in association with rubber roofing systems. Primers, in-seam tape, bonding adhesive, flashing material, inseam plates, insulation plates, screws, metal edging, cap flashings, thru wall flashings, metal skirts, pitch boxes, curbs, vent pipes, and exhaust fans are just a few.