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HRM 714 hot-applied rubberized asphalt waterproofing membrane is a 100% solids blend of asphalts, synthetic rubber polymers, and fillers formulated to provide toughness with flexibility and low moisture vapor permeance.
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Product Data Sheet
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HRM 714
Hot-Applied Rubberized Waterproofing Membrane
DESCRIPTION
HRM 714 hot-applied rubberized asphalt waterproofing membrane is a 100% solids blend of asphalts, synthetic rubber polymers, and fillers formulated to provide toughness with flexibility and low moisture vapor permeance.
USES
HRM 714 is hot-applied to form a continuous elastomeric membrane. It is ideal for use on plaza and outdoor amenity spaces, protected membrane roofing assemblies (PMRA), split-slab and parking decks, tunnels and bridge decks, and similar types of construction where a monolithic waterproofing membrane is desirable.
FEATURES/BENEFITS
- Excellent combination of toughness and low temperature flexibility.
- Very low water absorption and vapor permeance.
- 0 g/L VOC
- Resistant to chemicals, acid, fertilizer, and salt water.
- Minimum application temperature of 0° F (-17.8° C)
PACKAGING
50 Lb. (22.7 kg) Cartons (two 25 lb. cakes)
COVERAGE
| Thickness (Mils) | Application Rate |
| 125 | 0.72 lb./ft.2 (3.5 kg/m2) |
| 215 | 1.23 lb./ ft.2 (6 kg/m2) |
Coverage is expressed as an average and is dependent upon surface conditions.
SHELF LIFE
Five years in unopened container.
SPECIFICATIONS/STANDARDS
- LA Research Report RR 26213
TECHNICAL DATA
| PROPERTY | TYPICAL TEST RESULT | TEST METHOD |
| Solids Content | 100% | ASTM D1353 |
| Typical Application Thickness | Fabric Reinforced Assembly: 215 mils total (90 mils/125 mils) | |
| Water Resistance | No delamination, blistering, emulsification, or deterioration | CGSB-37.50-M89 |
| Low Temperature Crack Bridging Capability | Pass at >0° F (-17.8° C) |
CGSB-37.50-M89 |
| Heat Stability | Pass | CGSB-37.50-M89 |
| Pull off Strength, lbf | 108 | ASTM D4541 |
| Flow | 0.2 cm | ASTM D1191, CGSB-37.50-M89 |
| Penetration @ 32° F (0° C) @ 77° F (25° C) @ 122° F (50° C) |
25 mm 55 mm 160 mm |
ASTM D1191 CGSB-37.50-M89 |
| VOC Content | 0 | ASTM D2369 |
| Water Absorption | 0.20 g weight gain | CGSB-37.50-M89 |
| Viscosity | 5.0 to 7.0 seconds | CGSB-37.50-M89 |
| Adhesion to Concrete | Pass | ASTM D3408, CGSB-37.50-M89 |
| Softening Point | 200° F (93° C) | ASTM D36 |
| Elongation | 1,500% | ASTM D1191 |
| Tensile Strength, psi (MPa) | 26 (0.17) | ASTM D412 |
| Acid Resistance | 50% Sulfuric Acid w/o blistering, deterioration, delamination or re-emulsification | ASTM D896 Procedure 7.1 (N-8) |
| Salt Water Resistance (20% sodium carbonate and calcium chloride) | Passed 20% Sodium Chloride w/o blistering, deterioration, delamination or re-emulsification | ASTM D896 similar |
| Fertilizer Resistance (undiluted 15/5/5 nitrogen / phosphorus / potash) | Passed 30/10/10 Fertilizer w/o blistering, deterioration, delamination or re-emulsification | ASTM D896 similar |
| Animal Waste Resistance, 3 year exposure | No deterioration | |
| Bond to Concrete @ 0° F, (18° C) | Pass | ASTM D3408 |
| Water Vapor Transmission | 1.7 ng/Pa*s*m2 maximum | ASTM E96 Procedure E |
| Asphalt Compatibility | Pass | ASTM D5329 |
APPLICATION
Surface Preparation … Prior to commencement of the waterproofing application, the following preparation may be necessary:
Chip or grind off concrete spills from subsequent pours to create a flat, uniformly smooth surface. Fill depressions in the concrete left by form boards, footprints, screed rail chairs, etc. with MEADOW-PATCH® 5 from W. R. MEADOWS. Remove areas of heavy laitance with a grinder, brush hammer, scabbler, or similar device.
Grind off sharp projections, fishtails, and sharp corners. Patch honeycombed or bug-hole areas with MEADOW-PATCH 5.
On existing structures, remove old waterproofing. Remove lightly scaled concrete down to sound concrete and restore to proper cross section and grade with a Portland cement mixture. Where scaled and spalled concrete exposes reinforcing steel, remove concrete to below exposed steel and replace with MEADOW-CRETE® GPS from W. R. MEADOWS.
Do not use hot-mix patching to level up a deck prior to waterproofing.
Concrete surface suitable for membrane application should be wood-float finish or broom finish and be clean and free of oil, grease, curing compounds, dampness, frost, dust, or loose particles that can impair bond of the HRM 714 system to substrates. Sand-blasting and vacuuming are recommended after which no traffic should be permitted in the area.
For proper surface conditioning application and techniques, contact W. R. MEADOWS technical services.
Concrete surface suitable for membrane application should be wood-float finish or broom finish and be clean and free of oil, grease, curing compounds, dampness, frost, dust, or loose particles that can impair bond of the HRM 714 system to substrates. Sand-blasting and vacuuming are recommended after which no traffic should be permitted in the area.
For proper surface conditioning application and techniques, contact W. R. MEADOWS technical services.
Cracks, Joints, Other Discontinuities … Cracks and construction joints that are 1/16″ (1.6 mm) and 1/8″ (3.2 mm) shall be coated with a 125-mil application of HRM 714. Immediately embed a 6″ (150 mm) wide strip of REINFORCING FABRIC HCR into membrane while hot. Brush to ensure full contact of fabric with membrane including all side and end laps and eliminating any wrinkles. Lap all ends of fabric a minimum of 2″ (50.8 mm) with hot-applied membrane. 1/8″ (3.2 mm) to ½” (12.7 mm) cracks and construction joints shall be coated with 125-mil application of HRM 714. Immediately embed a 6″ (150 mm) wide strip of NEOPRENE FLASHING MEMBRANE or acceptable sand/sand modified asphalt flashing. Ensure full contact of flashing while membrane is still warm and tacky. Lap all ends of neoprene or modified flashings a minimum of 6″ (150 mm) with hot-applied membrane. Cracks and joints less than 1/16″ (1.6 mm) do not require reinforcement. Reinforce static inside and outside corners with a 125-mil coating HRM 714 and immediately embed a 6″ (150 mm) strip of REINFORCING FABRIC HCR centered on the apex of the corner. Brush to ensure full contact of fabric with membrane including all side and end laps and eliminating any wrinkles.
Expansion Joints … For expansion joints 1/2″ – 2″ (12.7 – 50.8 mm), apply a 125-mil (3 mm) thick coating of HRM 714 8″ (203.2 mm) wide to both sides of joint. Immediately embed 6″ (152.4 mm) of NEOPRENE FLASHING MEMBRANE onto each side of joint into hot membrane. Drape flashing into joint to a depth of 1.5″ (38.1 mm) or enough to accommodate movement.
For expansion joints greater than 2″ (51 mm), a waterproofing expansion joint system is recommended.
Surface Conditioning … Apply MEL-PRIME™ solvent-based adhesive from W. R. MEADOWS to all surfaces to receive HRM 714 hot-applied waterproofing at a coverage rate of 250 – 300 ft.2/gal (6.14 – 7.37 m2/L). Ensure adhesive is tack-free before application of HRM 714.
Flashing … Clean all metal surfaces to receive hot-applied membrane, including flashings, vents, drains, etc., with solvent, dry with clean cloths, and condition with MEL-PRIME solvent-based adhesive. Allow MEL-PRIME to dry before applying HRM 714 membrane.
NEOPRENE FLASHING MEMBRANE from W. R. MEADOWS is used for flashing of drains, curbs, transitions, penetrations, and expansion joints as an accessory to HRM 714 hot-applied rubberized asphalt waterproofing membrane. NEOPRENE FLASHING MEMBRANE is intended for exposed conditions in waterproofing and roofing applications.
Vertical Surfaces … Apply a 125-mil (3 mm) coating 8″ (200 mm) vertically, or as required, and 3″ (75 mm) horizontally onto the structural deck. Immediately embed REINFORCING FABRIC HCR into membrane while still hot, ensuring the correct 2″ (51 mm) minimum overlaps. Brush fabric reinforcement to eliminate wrinkles. Apply the second 90-mil (2.3 mm) application of HRM 714 onto reinforcement fabric. Terminate the vertically-applied 2-ply reinforced hot-applied membrane system into TERMINATION BAR by W. R. MEADOWS or into a reglet as required and in accordance with W. R. MEADOWS standard typical details.
Drains … With drain installed, coat drain flange flush with the deck with 125 mils (3 mm) of HRM 714, extending a minimum of 6″ (150 mm) onto concrete deck. Immediately embed NEOPRENE FLASHING MEMBRANE into hot membrane up to the throat of drain opening.
Panelized Deck Application … Cover all static joints between ends and edges of gypsum roof cover board or plywood sheets with a minimum 6″ (150 mm) wide, 125-mil (3 mm) coating of HRM 714. Immediately embed a 6″ (150 mm) strip of REINFORCING FABRIC HCR centered over joints into hot membrane. Embed with a brush to eliminate wrinkles. Upon completion of joint and detail flashing work, apply 90 mils (2.3 mm) of HRM 714 evenly, covering all previously installed flashings and reinforced areas. Immediately embed REINFORCING FABRIC HCR into membrane while still hot, ensuring a minimum 2″ (50 mm) overlap at all side and end laps and full membrane engagement at all end and side laps. Brush reinforcing fabric into membrane to ensure full embedment and eliminate wrinkles. Apply the second layer of hot-applied membrane at a thickness of 125 mils (3 mm) to achieve a total system thickness of 215 mils (5.5 mm).
Upon application of the second and final ply of hot-applied membrane, install protection course. For areas requiring high compressive strength or vehicular traffic over concrete topping slabs, the mineral-fortified PROTECTION COURSE from W. R. MEADOWS protection course should be used.
Where asphaltic concrete road paving asphalt is used, ¼” PROTECTION COURSE, as the protection layer, is set into the second layer of HRM 714 while still hot is required. Joints shall be overlapped ½” or butted together and reinforced with MEL-DEK™ from W. R. MEADOWS.
Protection … Upon completion of the waterproofing system application, installation of overburden should occur shortly after. Where extended delays installing the overburden occur, protection of the completed waterproofing system is advised. Use of ¾” (19 mm) plywood is recommended where heavy wheeled equipment is used on top of the completed waterproofing system.
PRECAUTIONS
Do not heat HRM 714 membrane greater than 410° F (210° C). HRM 714 is not compatible with coal tar pitch, nor is it recommended over lightweight, non-structural concrete.
2022-11
What Contractors Are Discovering About Our HRM 714 Waterproofing System Coverage
