Modified bitumen membranes (or mod-bit) provide unparalleled reliability and serviceability. There are two kinds of modified bitumen systems; SBS (Styrene Butadiene Styrene) systems which can be applied with cold adhesives, hot asphalt, or torch-applied and APP (Atactic Polypropylene) systems, which are almost exclusively torch-applied. This type of roofing is sometimes referred to as a torch-on roof.
Mod-bit systems provide several advantages including:
Built-up roofs are essentially manufactured on site. They consist of multiple layers or plies of various felts (providing redundancy) that are adhered with layers of hot or cold asphalt. Built-up roofs have the longest proven history of effective performance, provide easy maintenance and repair and are very resistant to the elements as long as drainage concerns are addressed.
Addressing drainage issues can reduce building weight loads and help get the maximum lifespan from your roof membrane. It also helps prevent moisture infiltration in the event of membrane failure. We can measure and design a package that can address your drainage issues. Drainage issues can be addressed through the installation of a tapered deck, custom tapered insulation packages, or changes in drainage type or location.
Single-ply systems provide a cost-effective solution appropriate for both new and re-roof projects. The three most common single-ply systems are EPDM, PVC, and TPO as described below:
These systems consist of a vapour barrier, rooftop insulation and the single layer membrane. They can be installed in a number of ways from loose-laid and ballasted to fully adhered thus providing solutions for most building types. The availability of many roll sizes and the ease of application allow for large areas of roof to be completed in short periods of time providing cost-effective options.