TruCraft specializes in the application and maintenance of single-ply roofing membranes. A standard material for low-slope (less than 25% grade) roof systems, single-ply roofing membranes are generally factory made panels composed of thermoplastic and thermoset products.
Flexible to budgets and needs, TruCraft can install and upgrade single-ply roof systems using various methods, including ballasted, fully adhered, mechanically attached to an approved substrate, or as a protected membrane roof. In fact, TruCraft Project Managers consult directly with the commercial roofing membrane manufacturers regarding the most effective securement configuration options for each project.
Although they do not offer the strength of Built-up Roofs, single-ply roofs are lightweight and offer the most cost-effective “cool roof” benefits and Title 24 compliance. For low-slopes systems, alternatives to single-ply roofing that TruCraft offers include, modified bitumen, built-up roofs, polyurethane foam, and metal roofs.
Thermoplastic Polyolefin (TPO)
TruCraft is an expert installer of this dynamic thermoplastic single-ply membrane. Composed primarily of polypropylene or polyethylene, TPO systems do not require plasticizers for flexibility, mitigating the risk of a breached roofing system.
Depending on the functional needs of the building envelope system, TruCraft can apply complement TPO roof membranes with flame-retardants, pigments, UV absorbers, and other proprietary ingredients.
Polyvinyl Chloride (PVC)
Also a quality single-ply roofing membrane, PVC is commonly used for steep-slope roofing systems where sheets are produced by calendaring, spread coating, or extrusion and are typically reinforced with a fabric mat or scrim. A desired benefit of PVC membranes is that they are manufactured in a spectrum of colors.
TruCraft recommends the use of reinforced sheets, complying with ASTM Standard D 4434, Standard Specification for Poly (Vinyl Chloride) Sheet Roofing, for field membrane applications. Reinforced membrane materials may provide the best service for the main field of the roof, perimeters, and most flashings. Where recommended by the manufacturer, membrane materials that are not reinforced, may be suited for prefabricated penetration flashing boots and other specific detail applications.
Ethylene Propylene Diene Monomer (EPDM)
Historically the most common single-ply membrane employed in commercial roofing, EPDM is simply a synthetic rubber sheet. Known to be the most resistant to weathering, these membranes are ideal for large commercial roofing systems with limited penetrations.
Although they are cheaper to install and maintain, EPDM roofs are easily compromised by a myriad of conditions and variables introduced by everyday businesses. For example the exhaust from restaurant kitchens can quickly breakdown these membranes, as well as exposure to commonplace solvents. To protect EPDM membranes, commercial roofers commonly use Epichlorohydrin (ECH) membranes as a substitute and/or complement. Similar in appearance and functionality, these membranes are resistant to the risks previously mentioned — although more expensive. Given that EPDM roofing is so temperamental, quality installation demands an experienced commercial roofing company’s understanding of the material’s limitations.