Product Data Sheet
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Asphaltic Panel Bridge Deck Protection Course
VIBRAFLEX bridge deck protection course is a multi-ply, semi-rigid asphalt panel composed of a mineral-fortified asphalt core between one liner of asphalt-saturated felt and one layer of fiberglass. One liner is weather-coated and has a polyethylene film facing. It may be used in conjunction with most types of built-up dampproofing and waterproofing membranes, including liquid membranes, sheet membranes of EPDM, butyl, neoprene rubber, polyvinylchloride, as well as built-up systems. It is equally adaptable to concrete, wood, steel, and pre-stressed or precast concrete structures that require waterproofing. VIBRAFLEX is ideal for both new and remedial waterproofing applications.
Developed by W. R. MEADOWS in conjunction with some of the nation’s leading railroads, VIBRAFLEX provides a top-quality protection course that can be dry installed and is fully compatible with butyl sheeting and most sophisticated waterproofing membranes. It will withstand forces that would otherwise injure or deteriorate the membrane waterproofing material and destroy the integrity of the waterproofing system.
May help contribute to LEED credits:
PER 100 FT.²
3/8″ (9.53 mm)
1/2″ (12.7 mm)
4’x8′ (1.22 x 2.44m)
4’x8′ (1.22 x 2.44m)
260 lbs. (117.94 kg)
350 lbs. (158.76 kg)
To reduce the possible ingress and infiltration of fines to a minimum and provide maximum membrane protection, VIBRAFLEX panels are installed in two layers. The first layer is laid dry directly on the waterproofing membrane, with each sheet butted tightly to the next. The second layer is then laid with the butt joints staggered on a half-sheet module (as shown in the layout diagram) to avoid coincidence with the joints of the first layer. No adhesives are required when the sheets are applied in this dual-layer technique. The longitudinal dimension of the panels should be parallel to the composite slabs and structural members. VIBRAFLEX is shipped with anti-stick polyethylene sheets between each panel, making handling and installation fast and easy. Panels may be cut to size using a sharp roofer’s knife.
DUAL LAYOUT APPLICATION THEORY
This theory, shared by many railroad engineers, states that the longer the ballast is in place, the greater the degree of build up or concentration of fines at the lowest possible level; in this case, the point at which the ballast is in direct contact with VIBRAFLEX. Normal gravitational movement, vibration movement of the ballast, and liquid flowing in the direction of the membrane concentrates these fines, and gradually, a crust-like surface develops on top of the VIBRAFLEX material. Because of the staggered joint system, the fines do not work their way through the full material thickness (since only one half the joint area is present at any one point), so the integrity of the waterproofing membrane is preserved.
Keep VIBRAFLEX stacked on pallets or on a smooth surface to prevent deformation before application. Do not apply VIBRAFLEX over liquid waterproofing membranes containing volatile solvents until all the solvent has evaporated. NOTE: WHERE VIBRAFLEX WILL BE LEFT EXPOSED TO SUNLIGHT, IT MUST BE PROTECTED WITH THE APPLICATION OF ALUMINUM-FIBRED ROOF COATING. SPECIFIER AND USER SHALL DETERMINE SUITABILITY OF PRODUCT FOR SPECIFIC APPLICATIONS AND ASSUME ALL RESPONSIBILITIES IN CONNECTION THEREWITH. Read and follow all directions prior to application.
This material last updated August 2010.