JOHNS MANVILLE Roofing Systems Group 717 17th Street Denver, CO 80202 Toll-Free: (800) 922-5922 Fax: (303) 978-2318 Web site: http://www.jm.com/roofing Expansion Joints We can make an expansion joint for just about any opening. Johns Manville has built its reputation with the specifying community and contractors alike through our highly experienced Technical Services Department and our skilled craftsmen. We are problem solvers through building movement management. No matter how unusual your roofing challenge, Johns Manville can turn your rough sketches into custom-manufactured, high quality Expand-O-Flash® expansion joint covers, intersections and transitions. And, when used in a total Johns Manville Roofing System, they can be included in one of the most comprehensive performance guarantees in the industry. Seismic Joint Covers We have expertly fabricated seismic closures on openings up to 24" (expansion joint over 54") to accommodate calculated multi-directional seismic movement without failure. Radius Closures Our designed solutions allow expansion along curved surfaces, such as arches, to accommodate movement at curved surfaces between building components, such as atriums and window walls. Penetration Closures Flexible closures are specifically designed to allow movement between pipes, ducts, tanks, bulk carrying equipment and building walls or roofs, especially where extreme temperatures cause thermal movement. Specialty One-of-Kind We help find solutions to building movement management through our Technical Service Department. Several solutions involve movement unrelated to roofing and/or buildings. Expand-O-Flash® Expand-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.
Flexible membrane covers:
Expand-O-Flash INS is a patented, factory-prefabricated, insulated expansion joint cover. It is formed using a standard Expand-O-Flash cover and Johns Manville Microlite "L" specialty fiber glass insulation integrally attached with a rugged, high quality vapor retarder system. It is available in bellows widths up to 54" to cover seismic and other expansion joint openings. Microlite "L" provides both thermal insulation (example R=19 for 6 1 /4" thick-ness) plus sound absorption (noise reduction coefficient 0.75). 
Expand-O-Gard®
Expand-O-Gard is a flexible waterproof closure 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. All styles of Expand-O-Gard are available with insulated bellows on special order. Style WS Style WS - for use on masonry construction, metal buildings and panel wall systems where flanges are concealed and/or sandwiched within the wall system.
Factory Fabricated Horizontal to Vertical Transitions Expand-O-Flash to Expand-O-Gard. Style F 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.
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. Factory fabricated intersections are included in all Johns Manville Roofing Systems Guarantees, and in the Johns Manville 10 Year Repair/Replacement Warranty. Unless requested, all intersections are fabricated with Neoprene bellows. All intersections available insulated. Sources For Full Information For complete information and specifications on Built-Up, Modified Bitumen and Single Ply roofing products and applications, please refer to the JM web site, www.jm.com. Contact the Regional Technical Services Manager who can be reached through the JM Regional Sales Office nearest you, or the Technical Services Specialists at the Guarantee Services Unit. Ask for JM’s Brochure on Accessories, RS-6002 10-98. |