DECK WATERPROOFING SYSTEM
Provides a cost effective waterproofing
underlayment for asphaltic overlays.
SEALTIGHT MEL-DEK is a flexible, dependable roll-type waterproofing membrane
designed for bridges, parking decks or other vehicular structures to be overlaid
with an asphaltic wearing course.
SEALTIGHT MEL-DEK is a roll-type waterproofing membrane composed of
a nominally 53 mil thick layer of polymeric waterproofing membrane on a
shrink-resistant, heavy-duty 12 mil thick, polypropylene woven carrier fabric.
The 2 components are laminated together under strictly controlled production
SEALTIGHT MEL-DEK Waterproofing System provides an excellent
waterproofing membrane for bridges, parking decks or other vehicular traffic
structures to be overlaid with an asphaltic concrete wearing course. Ideal for
repair, maintenance or new construction applications.
Advantages and Benefits
|Requires no protection...can withstand the dynamic
placement of hot asphaltic overlays
|Provides 3/4" membrane-to-membrane weld at seams
for positive, monolithic protection
|Flexible, dependable, cost-effective and easy to
|Meets a wide range of maintenance and new construction
Lamb's Wool Roller
NOTE: For applications
receiving overlays other than asphalt, please consult with W.R. MEADOWS
SURFACE PREPARATION: New concrete surfaces are to be fully
cured and dry or approved by the engineer. Surface is to be cleaned of all dust,
dirt and debris just prior to priming. Existing concrete surfaces are to have a
smooth, sound, monolithic surface, free of voids, spalled areas, sharp
protrusions and loose aggregate. Remove all traces of old membranes, oil, grease
or other contaminants.
TEMPERATURE: SEALTIGHT MEL-DEK may be applied in fair weather at air and
concrete surface temperatures of 40ºF (4ºC) and higher.
JOINTS AND SLAB DRAINAGE: Apply a reinforcing strip of SEALTIGHT DETAIL STRIP
over all non-working joints or cracks over 3/16" (4.76mm) wide before
applying finished membrane.
Seal all terminations with SEALTIGHT POINTING MASTIC. Deck surface must provide
proper pitch to gutters and drains. Drainage openings should be provided at the
structural deck level to drain any water that penetrates the asphaltic concrete
PRIMING: Prime all surfaces to be covered with SEALTIGHT MEL-PRIME Water-Base or
MEL-PRIME Solvent-Base VOC Primer. Primer may be spray-applied or applied with a
lamb's wool roller. Allow primer to dry until tack-free. Primed areas not
covered in 24 hours must be reprimed. Coverage, 250 to 300 ft.²/gal. (6.14 to
APPLICATION METHOD: Apply MEL-DEK from low point to high point, in both the
longitudinal and transverse directions. In the transverse direction, overlap in
shingle fashion 2-1/2" (63.5mm) after removing the white polyethylene strip
that exposes the 3/4" rubberized asphalt. This will give you the membrane
to membrane weld at seams. Longitudinally, overlap 6" (150mm) and seal with
Pointing Mastic. Once positioned, the MEL-DEK should be immediately hand rubbed
onto the surface followed by a pressure-applied roll-pressing of the complete
surface to assure positive adhesion. Seal all terminations with SEALTIGHT
NOTE: If a thickness greater than 125 mils is desired, overlap each roll of MEL-DEK
INSPECT AND REPAIR: Inspect thoroughly before covering and make any necessary
repairs immediately. Patch all tears. Slit fishmouths and patch. Seal edges of
all patches with SEALTIGHT POINTING MASTIC.
PAVING: Placement of the asphaltic concrete overlay should be accomplished as
soon as possible after application of the MEL-DEK. A minimum 2" (50mm)
compacted overlay thickness is required. The temperature of the asphaltic
concrete at the time of compaction should be a minimum of 290ºF, and not exceed
340ºF. Protect the membrane surface from unnecessary traffic. Place the overlay
from low point to high point with care and caution.
60' (18.29m) long x 38.5"(.98m) wide Rolls
180 ft.² (16.72 m²) of effective waterproofing coverage
Refer to Material Safety Data Sheet for complete Health and Safety
|Tensile Strength, ASTM D 882
Fill 90 lbs
|90 lbs. (40.82 Kg)/35%
90 lbs. (40.82 Kg)/45%
|Puncture, ASTM E 154
||275 lbs. (125 Kg)
|Flexibility, ASTM D 146
180º Bend, 1/4" (6.35mm) mandrel
@ -26ºF (-32ºC)
|Water Vapor Transmission, ASTM E-96
|Water Absorption, ASTM D 1228
|Independent test report
available upon request
This material last updated December, 2001.
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.