Mechanically Attached Roofing System
The top layer of a mechanically attached roof is a reinforced membrane made from EPDM, TPO or PVC. Under the membrane is a layer of insulation and below that is the actual roof deck. The roof deck on commercial buildings can be made of metal, wood, tectum, or gypsum with approved fasteners. It can also be constructed of formed concrete, but hurricane-proof concrete roofs are not cost effective, or needed, in Minnesota.
When installing mechanically attached roofs, the membrane roll is laid down and then the screws are driven directly through the insulation boards into the metal deck below. Typically, the screws are drilled in at the edge of the membrane roll then covered with the edge of the next sheet as the rolls are successively put down. A watertight seal is then created by heat-welding the membranes together with a hot-air gun. This seals any gaps and creates a single, flat, waterproof surface.
The Main Benefits of Mechanically Attached System
EPDM Benefits with MAS
- Adaptable to unusual roof configurations
- Use of large EPDM panels
- Fewer seams
- Fast coverage, less weather sensitive
- Lightweight system
- High wind uplift performance
TPO & PVC Benefits with MAS
- Heat-welded or RhinoBond® electromagnetic induction welded
- Zero penetrations with RhinoBond®
- High wind uplift performance
- Resistance to hail and accidental punctures
- Top ply membrane thickness adds improved durability
Mechanically Attached System
- Reinforced Membrane
- Fasteners and Plates
- Acceptable Insulation
- Approved Roof Deck
Most Popular FAQ’s
What is a mechanically attached roof?
A mechanically attached roof is a type of roofing installation where the membrane is fastened to the roof deck using screws and plates. This method is commonly used for commercial flat and low-slope roofs and offers a secure attachment, allowing the roofing membrane to withstand wind uplift. It is a cost-effective installation approach that provides durability and flexibility.
What is a mechanically attached TPO?
Mechanically attached TPO (Thermoplastic Polyolefin) is an installation method where the TPO membrane is secured to the roof deck using mechanical fasteners. This approach is popular due to its versatility and ability to adapt to different building types. Mechanically attached TPO provides a durable, flexible roofing solution that resists wind uplift and extreme weather conditions.