Because they’re flexible, durable and amazingly weather-resistant, single-ply roofing systems have grown in popularity with low-slope facility owners and managers. High quality EPDM, TPO and PVC membranes, manufactured under strict quality controls, are suitable for both new roof and re-roofing projects. Installation methods vary, depending on the type of single-ply system selected and other criteria, but in all cases, professional installation is critical to the life and success of the roof.
Mechanically Attached Roof Installation
A mechanically attached membrane secures to the roof substrate using individual fasteners. Depending on the roof decking, the fasteners could be concrete screws, nails, augers or other types of penetrating fasteners. If the facility has a steel or wood roof deck, if installation will take place in cool weather, or if the new membrane will be installed over an existing roof, mechanical attachment could be the best choice. A mechanically attached roof is affordable and relatively quick to install.
Fully-Adhered Roof Installation
A fully-adhered roof system features the use of adhesive to hold the membrane in place. We might recommend a fully-adhered installation if your facility’s roof is unsuitable for mechanical attachment. A fully-adhered membrane offers increased wind uplift resistance on structurally sound roofs, and it can be a good choice where substrate penetrations must be avoided.
Ballasted Roof Installation
For centuries, ship captains have used stones and sand as ballast to stabilize their ships on stormy seas. Likewise, a ballasted roof features a layer of gravel, washed river rock or paving stones, placed over the single-ply membrane to secure it. The ballast also protects the membrane from harsh UV rays and can do double duty as a roof-top plaza, patio or garden spot, if desired.
Induction Welded Roof Installation
Where mechanical attachment is feasible, but fewer penetrations are desirable, heat induction welding might be the answer. Induction welding systems, such as RhinoBond, feature coated plates, which attach to the roof deck before the membrane is installed. Once the membrane is in place, a special induction-welding tool bonds the membrane to the plates. The need for additional penetrating fasteners is reduced by as much as 50%.
What’s the Best Roof Installation Method for My Facility?
Roof structure, intended facility use, climate and budget all play a part in selecting a single-ply system and method of installation. At North American Roofing, we carefully analyze all aspects to determine the type of membrane and installation method best suited for your specific facility. We install all major brands of single-ply systems, and no matter what type of installation method we use, we make it a point not to interfere with your day-to-day business routine. Not all installation methods are suitable for all types of single-ply roofing systems, so a reputable roofing contractor must be involved in the scope designing process.