Commercial Roofing Systems: Which to Choose?

              

Whether you are a building owner, design professional or a roofing contractor, choosing the right commercial roofing system for your building or project is one of the most important decisions you will make. The right roofing system will protect your investment for decades, while the wrong roofing system could result in costly repairs, damage to the building and its contents and possibly an early tear-off and re-roof.

To help you make an informed decision, Sika Sarnafil has briefly described our commercial roofing systems below to help you choose one that best fits your needs.

Adhered Roofing Systems

Bareback and Feltback Adhered

Sarnafil adhered roofs are best for low sloped, uniquely shaped or pitched roof applications composed of non-nailable substrates such as pre-cast or pre-stressed concrete, cementious wood fiber or gypsum. They also work well over non-nailable substrates such as concrete, steel and wood decks.  The EcoBond Roof which utilizes our water-based adhesive, Sarnacol 2121, also has a few cost competitive solutions becuase of its excellent coverage rate.

Lightweight Insulated Cellular Concrete Roof System

The Lightweight Insulated Cellular Concrete Roof System utilizes Sarnafil feltback G410 fiberglass reinforced thermoplastic membrane adhered to lightweight insulated cellular concrete using Sarnacol® 2121 water-based adhesive.  The characteristics of LWIC make it an excellent substrate for adhering Sarnafil feltback G410 membrane, resulting in commercial roofing systems with "high wind" performance.

Mechanically Attached Roofing Systems

Sarnafast System

This mechanically-attached system is your best roof system choice when speed and ease of installation are important. Sarnafast features metal plates fastened in the membrane overlap, spaced according to the roof’s wind uplift requirements. It is designed to meet wind conditions on most building types.

Sarnafil Express System

This break-through in mechanically-attached roof systems combines the speed of installation of the Sarnafast system with the wind performance of a double-weld system. Sarnafil Express features a polymer batten strip fastened in the membrane overlap and welded on both sides. The Sarnamatic automatic seam welder, with a patented double weld kit, creates a continuous weld in a single pass on both sides of the batten. This results in symmetrical wind loading across two seams, unlike a single-weld attachment system. Sarnafil Express reduces the chance of fastener rocking and pullout, membrane tearing and seam peeling. This commercal roofing system is ideal for 10-foot wide membrane attachment and buildings that experience repeat high wind events.

Engineered System

The Sarnafil Engineered System is designed for roofs that are subject to severe or extreme wind uplift forces, such as high-rise buildings or facilities located in coastal areas. The advantage of the Engineered system is the fastening pattern – both row spacing and fastener spacing can be customized or “engineered” for any specified wind load. The Engineered System utilizes a specially designed bar which is secured to the structural roof deck with corrosion-resistant fasteners. The bar clamps the membrane fully along its length, uniformly distributing the dynamic load produced by wind uplift. Sika Sarnafil offers wind warranty protection of up to 120 mph with this system.

RhinoBond System

Sika Sarnafil RhinoBond is an alternative attachment system for Sika Sarnafil roof membranes. The RhinoBond system eliminates membrane fastener penetration by welding the membrane directly to the specially coated plates used to secure the insulation or hardboard to the deck. The result is a commercial roofing system that uses fewer plates and fasteners while enhancing the wind uplift resistance.  The RhinoBond system can be fastened directly to an approved roof deck, or into the structural roof purlins like in a metal retrofit application.

EcoSmart System

Roofing systems don’t have to be disposable.  By maximizing system longevity and recycling at the end of its useful life, the Sika Sarnafil EcoSmart Roof provides you with a roofing option that’s good for the environment and your wallet. The EcoSmart Roof utilizes Sarnafil thermoplastic membrane, STYROFOAM™ brand insulation from Dow Building Solutions and gypsum roof board to produce one of the longest lasting, most ecologically responsible roofing systems available.

Sikaplan Mechanically Attached

The Sikaplan mechanically attached roof system is your best choice when speed and ease of installation are important. Sikaplan MA features metal plates fastened in the seam overlap spaced according to the roof’s wind uplift requirements. It is designed to meet wind conditions on many building types.

Standing Seam Metal Appearance

Decor Roof Systems

Your design can become reality with the Sarnafil Décor Roof System. The ideal choice for new or existing buildings that call for a metal roof appearance with the watertight integrity and design flexibility of a thermoplastic roofing membrane. Décor Roof Systems achieve the appearance of metal with a thermoplastic rib in either standing seam or batten seam configuration that is hot-air welded to the membrane surface. Décor also comes in seven standard color options and an unlimited number of custom colors. With Décor, you not only choose the color and style of the rib, but also the rib spacing.

Metal Retrofit Systems

RhinoBond System

Sika Sarnafil RhinoBond is an alternative attachment system for Sika Sarnafil roof membranes. The RhinoBond system eliminates membrane fastener penetration by welding the membrane directly to the specially coated plates used to secure the insulation or hardboard to the deck. The result is a commercial roofing system that uses fewer plates and fasteners while enhancing the wind uplift resistance.  The RhinoBond system can be fastened directly to an approved roof deck, or into the structural roof purlins like in a metal retrofit application.

Metal Retrofit System

Like many decisions, there are quick fixes and there are long term solutions. Solve the problem for the long term with Sarnafil's Metal Retrofit System. Recovering your metal roof with Sarnafil’s Metal Retrofit System is a cost effective, long term solution that allows you to stop worrying about leaks. There is no need to reseal, coat or replace your roof with the Sarnafil solution. The system is installed directly over the existing metal roof. The result is a long lasting Sarnafil roof that requires little maintenance and has a very low life-cycle cost.

Vegetated Roof Coverings

Green Roof Systems

Green roofs are growing in popularity in North America. They provide aesthetic, ecological and social benefits to modern buildings in urban areas. With over 30 years experience waterproofing green roofs across North America and Europe, Sika Sarnafil is the preferred commercial roofing system of design professionals and building owners. Many building materials used for roofing and waterproofing are not resistant to root growth and infiltration. They often fail prematurely due to poor algae resistance and root intrusion into field seams and flashings. The components in the Sarnafil waterproofing systems, including our durable G476 membrane, have been proven to last decades under such conditions.

Solar Roofing Systems

Solar Roofs

Unleash the power of the sun and turn your non-depreciating roof space into an energy generating asset. A solar roofing system can reduce your energy consumption costs and your reliance on the utility grid while providing a high performance roofing system.

Ballasted Roofing Systems

Ballasted Systems

Sika Sarnafil offers both the standard ballasted system using either stones or pavers as well as a unique insulation/paver panel called Lightguard.  Ballasted systems utilize the Sarnafil roof membrane, loose-laid on a recover board or other acceptable substrates with the ballast then laid on top keeping the sheet in place.  Ballasted systems are a good system for the building owner looking for a cost effective roof.

Liquid Applied Roofing Options:

Sikacoat Liquid Appled Coatings

Sikacoat® liquid applied coatings provide building owners with a cost effective option for roof maintenance and restoration. These high performance, reflective coatings can economically extend roof life, lower building energy consumption and improve roof aesthetics. It offers excellent adhesion to a wide variety of roofing substrates that include metal, modified bitumen, asphalt, TPO, EPDM, Hypalon® and PVC.

 

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Cool roofs

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