BRIDGE DECK PROTECTION COURSE
Railway proven protection course for
bridge deck waterproofing membranes.
SEALTIGHT VIBRAFLEX Bridge Deck
Protection Course is a multi-ply, semi-rigid asphaltic panel composed of a
mineral-fortified asphaltic 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.
VIBRAFLEX is equally adaptable to concrete, wood, steel and prestressed or
precast concrete structures that require waterproofing. It is ideal for both new
and remedial waterproofing applications. The American Railway Engineering &
Maintenance of Way Association (A.R.E.M.A.) has approved SEALTIGHT VIBRAFLEX as
a component within the waterproofing system, having passed five million cycles
of vibratory load testing.
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, 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
Advantages and Benefits
|Large 4' x 8' (1.22 meters x 2.44 meters) panels can be
installed dry, permitting faster, easier installation and savings of 40% to
60% in total installed costs
|Panel size results in fewer joints (90% less) which
eliminates infiltration of fines and resulting damage to the waterproofing
|Flexible dual-layer installation complies with current
A.R.E.M.A. Specification in Chapter 29.|
Eliminates messy, hot-mopping and cold-bitumen adhesives
|The factory-applied, weather-coated surface permits
controlled ballast penetration for a secure seating position which locks the
panel to the ballast for effective base stabilization
|Proven with more than 3 decades of outstanding field
performance and service|
1/2" (12.7 mm)
4'x8'(1.22 x 2.44m)
4'x8' (1.22 x 2.44m)
PER 100 SQ. FT.
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 2 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 panels are shipped
with anti-stick polyethylene sheets between each panel, making handling and
installation fast and easy.
The longitudinal dimension of the panels should be parallel to the composite
slabs and structural members. Sheets may be cut to size using a sharp roofer's
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. 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.
A.R.E.M.A. Specification; Chapter 29 for Membrane Waterproofing.
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 of the solvent has evaporated.
NOTE: WHERE VIBRAFLEX WILL BE LEFT EXPOSED TO SUNLIGHT IT MUST BE PROTECTED WITH
THE APPLICATION OF ALUMINUM FIBERED ROOF COATING. SPECIFIER AND USER SHALL
DETERMINE SUITABILITY OF PRODUCT FOR SPECIFIC APPLICATIONS AND ASSUME ALL
RESPONSIBILITIES IN CONNECTION THEREWITH.
Read and follow application information, precautions and Material Safety Data
This material last updated August, 2000.
W. R. MEADOWS, INC. warrants that, at the time and place
we make shipment, our materials will be of good quality and will conform with
our published specifications in force on the date of acceptance of the order.
THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY
OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the
exclusive remedy for breach of this Warranty, we will replace defective
materials, provided, however, that the buyer examine the materials when received
and promptly notify us in writing of any defect before the materials are used or
incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has
shipped the materials, all our Warranty and other duties with respect to the
quality of the materials delivered shall conclusively be presumed to have been
satisfied, all liability therefore terminates, and no action for breach of any
such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event
be liable for consequential damages. Unless otherwise agreed to in writing, no
warranty is made with respect to materials not manufactured by W. R. MEADOWS,
INC. We cannot warranty or in any way guarantee any particular method of use or
application of the performance of materials under any particular condition.
Neither this Warranty nor our liability may be extended or amended by our
salesmen, distributors or representatives, or by our distributor's
representatives, or by any sales information or drawings.