Archive for Roof Types

Hypalon Roof Challenges in Florida

Approximately 25 years ago, and as an adjunct to its use as a reservoir and pond liner, DuPont introduced Hypalon as a roof membrane. The rationale was its’ superb resistance to chemicals and long-life in harsh environments made it an excellent candidate for a roof system. Hypalon is synthetic rubber and is chemically formulated as […]

PVC Roofing Overview

A secondary roof membrane to be available on the market was introduced in Europe in the 60’s. PVC, another thermoplastic membrane available in a variety of thickness’, has been installed in the US since the 70’s and has found an increasing market share since that time. PVC is specifically polyvinyl chloride and is formed into […]

The Modified Bitumen Evolution in Florida Roofing

One of the many evolutions in the roofing industry has been the formulation of modified bitumen membranes. As the name implies, modified membranes are asphalt based with modifying polymers introduced during the manufacturing process. The most common modifiers are APP or SBS, which when combined with asphalt, give the resulting membrane plastic or rubber-like properties. […]

Build-up Roofs a Longtime Staple for Florida Commercial Buildings

Built-up roofs using coal tar pitch are the oldest form of flat roofing in existence. One hundred forty year old sketches are available showing horse drawn “hot kettles” and this form, with minimal changes, is still in use today in Tampa Bay and all of Florida. Coal tar pitch is a distillate of coal tar […]

Built-Up Asphalt Roof Systems in Florida Commercial Buildings

Conventional built-up roof systems have been in use as an industry mainstay for over 100-years. These applications typically use coal tar pitch or asphalt as the waterproofing material which is installed in successive layers and reinforced with ply felts. With multiple plies, a contractor is essentially “building up” the roof, hence the terminology. This post […]