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Standing Seam Roof Systems
Ultra-Dek Double-Lok

The snap-together system, Ultra-Dek®, and field-seamed system, Double-Lok®, were designed from concept to completion for strength, durability and weatherability. The standing seams are three inches above the lowest part of the panel, well above the water level as it flows off the roof.

The rake/gable at both ends of each roof system finish with a 3-inch high standing seam, avoiding the necessity of finishing in the low, flat part of the panel where the greatest possibilities for leaks occur in many other systems.

Ultra-Dek® and Double-Lok® panels can be installed before or after the exterior walls are in place. All trim is attached after the roof is installed. With a recommended minimum slope of ¼:12, these standing seam metal roof systems can be used on all types of construction, including metal, masonry or wood, for either new construction or retrofit.

Concealed Fastening Systems
All of MBCI’s standing seam metal roof systems are concealed fastening systems. A choice of concealed fastening clips is available for each system. These clips hold the panels firmly in place without unsightly exposed fasteners. Each clip system offers the ability to accommodate thermal movement.

The standard offering for the Ultra-Dek® and Double-Lok® systems is a sliding clip that allows for thermal movement. A 4-inch sliding clip is available for the Double-Lok® system, which in many cases, can eliminate roof steps on a double slope building up to 900 feet wide or a single slop building up to 450 feet wide. These clips are available in high and low versions for use with different  thicknesses of vinyl-backed fiberglass insulation.  A  2” stand-off clip is also available for the Double-Lok® roof system.  This clip allows the placement of 6” of fiberglass insulation and 1” thermal spacer between the roof panel and the purlin or joist, a requirement for several climate zones under the new energy codes.

Uplift Ratings
Each standing seam metal roof system carries the Underwriters Laboratories Fire Resistance and Wind Uplift (UL 90) ratings covering a wide range of roof designs. In addition, the Double-Lok® system meets a variety of ratings as tested under FM Global Corporation Standard 4471. The Double-Lok® system has met all test requirements specified in CEGS 07416 / ASTM E 1592 Standing Seam Metal Roof System guide specification. MBCI's Double-Lok® roof panel meets both Florida Product Approvals and Miami-Dade County Approvals.

Weathertight Roof Systems
Special clips are available allowing for thermal roof expansion and contraction during extreme temperature changes. All trim is both weathertight and aesthetically pleasing, giving the roof a nice finished appearance.

Factory-applied sealant in the panel sidelap helps ensure a tight, secure weathertight lap.

NOTE: As with all standing seam metal roof systems, sound attenuation (e.g. blanket insulation) is required between the panel and the substructure to prevent “roof rumble” during windy conditions. Some composite roof systems may require additional acoustical consideration to ensure that thermal vibration noises are isolated from the building’s interior. Contact your architect and/or engineer for proper acoustical design.

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