Expansion Joint CoversFlexible, weatherproof exterior closures designed to accommodate openings between adjoining parts of a structure. They manage movement caused by thermal expansion, settlement and the junctions of differing deck materials. They qualify for a Johns Manville Peak Advantage® Guarantee. 
Expand-O-Flash® Expansion Joint CoverExpand-O-Flash® expansion joint covers are flexible, weatherproof, exterior covers for expansion joint openings and are an effective, flexible closure for a wide variety of standard and special applications. Each Expand-O-Flash cover is a combination of a flexible rubber membrane, supported by a closed cell foam to form flexible bellows, with two metal flanges, adhesively and mechanically combined to the bellows by a patented bifurcation process. As expansion joints move, the greatest stress occurs in the cover at the point where expansion joints intersect, cross or change directions. Factory-fabricated intersections are designed for maximum flexibility and are produced using special fabrication techniques to ensure watertight, clean seam lines. Close factory tolerance and quality control assures high yield performance. Designed to manage the movement of commercial and industrial building roof systems: thermal, settlement, new and existing junctions, differing roof deck materials or direction and seismic movement. Compatible with single ply and bituminous roof membranes. Expand-O-Flash expansion joint covers are available in the following styles:
Expand-O-Flash® Expansion Joint Cover: PVC EJ/WCExpand-O-Flash® Style PVC EJ/WC consists of foam supported bellows with integrally attached nonmetallic nailing flanges over which is attached a reinforced PVC cover of sufficient width to weld the entire joint assembly to the PVC membrane.
Nailing flanges are 13/8" (3.49 cm) rigid PVC welded to flexible PVC strips which in turn are welded to the reinforced PVC cover membrane. Cover membrane is available in white 60 mil or 80 mil (1.52 mm or 2.03 mm) reinforced PVC membrane. The membrane is designed to cover the curbs or cants and extend 5" (12.7 cm) onto the roof surface to be welded to the PVC roof membrane. As expansion joints move, the greatest stress occurs in the cover at the point where expansion joints intersect, cross or change directions. Factory-fabricated intersections are designed for maximum flexibility and are produced using special fabrication techniques to ensure watertight, clean seam lines. Close factory tolerance and quality control assures high yield performance. Designed to manage the movement of commercial and industrial building PVC roofing systems due to thermal changes, nonload bearing walls, settlement of new or old construction, different deck materials or directions of decking and possible seismic activity. 
Expand-O-Gard® Vertical Expansion Joint Cover Expand-O-Gard® expansion joints are flexible waterproof closures for vertical building walls designed to accommodate movement between building components caused by thermal, settlement, wind, flex and seismic forces. Expand-O-Gard is a combination of a durable elastomeric bellows attached to two metal flanges, both mechanically and chemically, by a patented bifurcation process. It is available in two designs, Style WS and Style F. Factory-fabricated transitions are available to accommodate intersections between vertical Expand-O-Gard and horizontal Expand- O-Flash® expansion joints. Style WS - for use on masonry construction, metal buildings and panel wall systems where flanges are concealed and/or sandwiched within the wall system. Style F - for use in joints between new and existing vertical walls, between curtain walls and glass atriums, and other vertical building walls where the flange is part of the closure design. Style F can be surface mounted. 
Fire Barrier FS 5800 This partnership combines Expand-O-Flash® by Johns Manville installed over FS5800-F by Thermal Structures, Inc. Listed below are the key advantages to using FS5800-F enhanced Expand-O-Flash, making our roof expansion joints the clear choice in fire protection.
Fire Barrier wall systems are also available, combining JM Expand-O-Gard® with Thermal Structures FS5800-W. Johns Manville Roofing Systems |