Roofing Expansion Joint COVER Options: For larger or higher movement expansion joints, you can seal them with covers. (photos courtesy Commercial Products Group).

TYPICAL FACTORY MANUFACTURED CORNERS AND INTERSECTIONS

Installation Instructions: Curb Type

Installation Instruction: Roof-to-Roof

Installation Instructions: Roof-to-Wall

Submittal Specification: Expansion Joint Covers

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TYPICAL FACTORY MANUFACTURED CORNERS AND INTERSECTIONS

MORE INFORMATION:

Expansion Joint Systems, Seals & Covers are flexible weatherproof, exterior covers for structural expansion joint openings, and are effective, closures for a wide variety of special applications. Widths are designed in various sizes to cover 4 to 12" wide expansion joint openings. Products feature a unique 3-ply flexible reinforced Hypalon bellow supported by a durable closed cell foam, which allows for anticipated movement in the structure, and metal mounting flanges factory locked to each edge of the bellow. Expansion Joint Covers with reinforced Hypalon bellow withstand the most extreme chemical and weather conditions without leakage. Accessories (corners, tees, end terminations, and crossover intersections) are designed for maximum flexibility and are produced using special techniques to ensure clean seam lines and watertight applications. Field seams are easily accomplished with standard splice kits.

APPLICATION: For use with all types of roofing- asphalt, coal tar bitumen, modified bitumen, EPDM, TPO, PVC, Hypalon, and most others. Replaces easily torn non-reinforced EPDM and Neoprene covers and easily damaged, bent, and leaky metal covers. More Expansion Joint information and options (call for our special pricing

APPLICATIONS:

Roof Expansion Joints are recommended to be provided for any one or more of the following minimum conditions.

· When the roof size exceeds 200 feet in any direction
· At all structural expansion or contraction joints
· Where the deck material changes, for example from steel to concrete
· Where the deck material or structural framing changes direction
· Where building wings intersect, such as "U", "T", or "L" shapes
· Where interior heating and cooling conditions change, such as between heated and unheated
· At all building additions of any shape
· Where differential movement between walls and decks may occur

Roof Expansion Joints are recommended to be constructed with raised curb assemblies which can allow adequate base flashing details for the roof system. Raised curb assemblies should be factory fabricated of galvanized steel to suit all project conditions which expedites and unifies project design and installation as opposed to traditional wood curbs which require extensive field installation time and thorough inspection of construction and attachment.

Over the raised curb assemblies, or at low profile expansion assemblies, the Portals Plus Expansion Joint Covers provide superior watertight integrity. Along with the standard cover profiles of Curb Flange, Combination Curb & Straight Flange, and Straight Flange, Portals Plus offers factory manufactured accessories available to suit virtually any project condition. The most common accessories are Corners, Intersections, and Ends. All factory manufactured accessories are custom made to suit each individual project's conditions, thereby assuring clean seam lines, continuity of joint material, and watertight integrity when properly spliced with Portals Plus standard splice kits. Contact Portals Plus for questions regarding any special details or applications.

Expansion Joint Products includes special products for sealing and waterproofing of high-expansion interfaces common in roofing, parking garages, large concrete decks and related waterproofing applications.

Expansion Joint Seals & Covers are flexible weatherproof, exterior covers for structural expansion joint openings, and are effective, closures for a wide variety of special applications.

We have related items under Flashings and in the categories of Backer Rod, Expansion Joint Sealants, Metal Goods and Pipe Seals. Concrete expansion joints up to 2 inches wide can be sealed with a self leveling expansion joint sealant. Sonneborn SL1 / SL2 and Novalink SL are most popular.  Soft celled Backer Rod is used together with self leveling expansion joint sealants. It is used for expansion joints around pools,  driveways, etc. See Backer rod sizing and installation information.

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