Built-Up Roofing (BUR)
Built-Up Roofing has been in use for more than 170 years, and was originally referred to as “composition roofing”. In this type of roofing system, a waterproof base sheet is first applied to the cleaned and prepped roof deck. Then, multiple layers (traditionally, 3-, 4-, or 5-plies) of roof “felts” are adhered together with a bonding agent, such as asphalt or coal tar. Finally, a protective surfacing layer is applied to complete the process. As one can surmise, the more intermediary layers that get applied, the greater longevity that the roof is expected to provide.
Other Roofing Systems
Tapered Insulation Systems
Tapered insulation systems are designed to provide the slope that is lacking on flat roofs so that proper drainage can then occur as desired, thereby extending the life of the roofing system as a whole.
SBS-MODIFIED (Styrene Butadiene Styrene)
SBS-modified roofing systems are highly favored in climates with greater extremes in both Summer and Winter temperatures. Fibreglas and polyester are just two of the materials used to reinforce SBS roofing systems.
PVC (Polyvinyl Chloride)
PVC roofing systems have been in use for about 40 years, and they currently account for about 10% of the roof coverings in America. They are extremely durable, highly resistant to punctures, dirt, and debris.