Product Data Sheet
|07 13 26||DATA SHEET 7100-602|
Deck Waterproofing System
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 two components are laminated together under strictly controlled production procedures.
MEL-DEK waterproofing system provides an excellent waterproofing membrane for bridges, parking decks, or other vehicular traffic structures to be overlaid with an asphalt concrete wearing course. MEL-DEK is ideal for repair, maintenance, or new construction applications.
- Requires no protection … can withstand the dynamic placement of hot asphalt overlays.
- Provides 19.1 mm (3/4″) membrane-to-membrane weld at seams for positive, monolithic protection.
- Flexible, dependable, cost-effective, and easy to install.
- Meets a wide range of maintenance and new construction application needs.
18.29 m (60′) long x .98 m (38.5″) wide rolls
16.72 m² (180 ft.²) of effective waterproofing coverage. (17.88 m² [192.5 ft.²] gross coverage).
- ASTM D 6153, Type III
- Approved by the Ministry of Transportation, Quebec.
|Tensile Strength, ASTM D 882|
|1.6 kg/mm (90 lb./in.)|
1.6 kg/mm (90 lb./in.)
|Elongation, ASTM D 882|
|Puncture, ASTM E 154||1.22 kN (275 lb.)|
|Flexibility, ASTM D 146|
180º Bend, 6.35 mm (1/4″) mandrel @ -32° C (-26° F)
|Water Vapor Transmission,|
ASTM E-96, Water Method
ASTM D 1970
ASTM D 1228
Independent test report available upon request
Note: For applications receiving overlays other than asphalt, please consult W. R. MEADOWS Technical Service.
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. For enhanced bond between asphalt overlay and MEL-DEK, apply an asphalt emulsion, water-based tack coat to the surface of MEL-DEK.
Temperature … MEL-DEK may be applied in fair weather at air and concrete surface temperatures of 4° C (40° F) and higher.
Joints and Slab Drainage … Apply a reinforcing strip of DETAIL STRIP from W. R. MEADOWS over all non-working joints or cracks over 4.76 mm (3/16″) wide before applying finished membrane. Seal all terminations with POINTING MASTIC from W. R. MEADOWS. 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 surface.
Conditioning … Condition all surfaces to be covered with MEL-PRIME™ or MEL-PRIME W/B adhesive from W. R. MEADOWS. Adhesive may be spray-applied or applied with a lamb’s wool roller. Allow adhesive to dry until tack-free. Conditioned areas not covered in 24 hours must be re-applied. Coverage: 6.14 – 7.36 m²/L (250 – 300 ft.²/gal.).
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 63.5 mm (2 1/2″) after removing the white polyethylene strip that exposes the 19.1 mm (3/4″) rubberized asphalt. This will provide the membrane-to-membrane weld at seams. Longitudinally, overlap 150 mm (6″) and seal with POINTING MASTIC. Once positioned, 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 POINTING MASTIC.
Note … Where a 125+ mil thick membrane is desired, overlap each roll of MEL-DEK 51%.
Inspect and Repair … Inspect thoroughly before covering and make any necessary repairs immediately. Patch all tears, slit fish mouths and patch, then seal edges of all patches with POINTING MASTIC.
Paving … Placement of the asphalt concrete overlay should be accomplished as soon as possible after application of MEL-DEK. A minimum 50 mm (2″) compacted overlay thickness is required. The temperature of the asphalt concrete at the time of compaction should be a minimum of 143.3° C (290° F), not to exceed 171.1° C (340° F). Paving equipment should be rubber tire variety. Protect the membrane surface from unnecessary traffic. Place the overlay from low point to high point with care and caution.
Refer to Material Safety Data Sheet for complete health and safety information.
MASTERFORMAT NUMBER AND TITLE
07 13 26 – Self-Adhering Sheet Waterproofing
May help contribute to LEED credits:
- IEQ Credit 3.1: Construction Indoor Air Quality Management Plan: During Construction
- IEQ Credit 7.1: Thermal Comfort – Design
- MR Credit 2: Construction Waste Management
- MR Credit 5: Regional Materials