CEM-KOTE FLEX PLUS (Canada)

Product Data Sheet

07 16 00

CEM-KOTE FLEX PLUS
Flexible Cementitious Waterproofing

FEATURES

• Excellent flexibility at low temperatures
• Substrate crack spanning, up to 2.5 mm
• Superior waterproofing (negative & positive)
• Long term crack resistance
• Excellent salt scaling resistance
• Effective protection against acid rain
• Self-curing
• Continuous water immersion possible
• Superior freeze/thaw resistance
• Highly breathable
• Very low shrinkage
• Salt resistant
• Non-toxic
• Easy mixing & application = sprayable

PRODUCT DESCRIPTION
Basic Use
CEM-KOTE FLEX PLUS is designed for waterproofing and crack spanning in thin sections when superior flexibility or low temperature flexibility is required. It provides an excellent negative- and positive-side waterproofing.

Composition and Materials
CEM-KOTE FLEX PLUS is a highly flexible, hydraulic cement based, two-component system consisting of dry Component A and liquid Component B.

Limitations
Do not apply CEM-KOTE FLEX PLUS when the temperature is expected to be below 4°C (40° F) within 48 hours, or when rain is imminent. Follow hot weather concreting precautions when applying CEM-KOTE FLEX PLUS at temperatures exceeding 25°C (77°F). CEM-KOTE FLEX PLUS is not designed for high traffic areas.

Health and Safety
CEM-KOTE FLEX PLUS is non-toxic. Your skin might be sensitive to hydraulic cement or the liquid additive. We recommend use of rubber gloves. Avoid contact with eyes and prolonged contact with skin. If contact occurs, flush immediately with water. Seek medical advice if irritation occurs. Harmful if digested. Keep product out of reach of children. FOR INDUSTRIAL USE ONLY. Consult MSDS for additional information.

Colour
Industrial Grey, Light Grey and White.

Packaging
CEM-KOTE FLEX PLUS consists of dry Component A, packaged in 16.0 kg (35.2 lb.) bags, and liquid Component B, packaged in 6.50L (1.7 USG) plastic containers. Industrial Grey = 6.5 L (1.7 USG); Light Grey = 7.4 L (1.95 USG). (Note: special formulations, depending on colour, contain varying amounts of Component B.)

Yield
CEM-KOTE FLEX PLUS – Industrial Grey with 6.5 L Component B yields 12.9 L (0.46 ft.³) and covers approximately 8.06 m² @ 1.6 mm (86.8 ft.³ @ 63 mils) per kit, applied in two (2) coats. The Light Grey material with 7.4 L (1.95 USG) yields 13.8 L (0.49 ft.³) and covers approximately 8.63 m² (92.8 ft.²). Special formulations, with a higher volume of the Component B, have a higher yield, depending on specific formulation. The actual coverage will depend on surface roughness and the thickness applied. The applicator must carry out a sample application to determine the actual coverage for the given substrate and application thickness.

Storage and Transportation
When stored in a dry area, Component A has a shelf life of 12 months. The liquid Component B must not freeze. Packaged 40 kits per pallet.

TECHNICAL DATA

Ultimate Tensile Strain (ASTM D412 Mod.) @ 20°C, (68°F) non-reinforced @ 20°C, (68°F) reinforced		35-70% 40%
Ultimate Tensile Stress (ASTM D412 Mod.) @ 20°C, (68°F) non-reinforced @ 20°C, (68°F) reinforced	0.38-0.55 MPa (55-80 psi) 3.1 MPa (450 psi)
Crack Spanning (Gemite ISO TP 005) @ 20°C, (68°F) non-reinforced @ 20°C, (68°F) reinforced	0.8 mm (0.032″) up to 2.5 mm (0.100″)
Water Vapour Permeance, 1.6 mm thick coating (ASTM E96 dry cup)	257 ng/Pa.s.m² (4.49 perms)
Water Vapour Permeability, Engelfried-Klopfer Sd <3 m	Sd = 0.720 m (134 mils)
Salt Scaling Resistance, (ASTM C672)	Excellent
Hydraulic Impermeability (negative side), (TT-P-1411, 2 mm thickness)	Water head >38.4 m (>126 ft.)

INSTALLATION
Current Guide Specification and Application Instructions contain additional information specific to each application and must be followed. The applicator must, prior to bidding a project, confirm detailing and use of REINFORCING FABRIC HD with W. R. MEADOWS Technical Service.

Surface Preparation
Remove all deteriorated and loose concrete, form release agents, oil, grease, laitance, dust, dirt, and efflorescence by dry or wet sandblast, shotblast, or high-pressure water (minimum 34.5 MPa [5,000 psi] or 24.1 MPa [3,500 psi] with sand brought to the nozzle). Repair deeper areas using MEADOW-CRETE_® GPS from W. R. MEADOWS. The proper surface preparation is essential for a successful waterproofing and concrete repair using CEM-KOTE FLEX PLUS.

Reinforcing Steel
Remove all loose rust from any exposed reinforcing steel and apply two coats of PATCH-PRIME_™ rust proofing from W. R. MEADOWS.

Crack Treatment
All cracks must be treated using CEM-KOTE FLEX PLUS and REINFORCING FABRIC NW. Pre-fill any open cracks with CEM-KOTE FLEX PLUS. Apply a thin coat of CEM-KOTE FLEX PLUS, 15-25 cm (6-10″) wide, over the crack. Embed a strip of REINFORCING FABRIC NW into the wet CEM-KOTE FLEX PLUS and apply a second coat to fully cover REINFORCING FABRIC NW. The total applied thickness should be 1.6-2 mm (60-80 mils).

Mixing
Thoroughly mix the liquid Component B prior to use. Use a clean paddle, helix mortar mixer or heavy-duty drill (400-600 rpm) with a mixing paddle. Pour approximately 80% of the Component B into the mixer and gradually add the dry material into the liquid. Mix until a smooth and lump-free mix is obtained. Add the remaining liquid as required for a given application consistency. A small amount of water can be added, if required, at higher ambient temperatures.

Application
Apply CEM-KOTE FLEX PLUS to a saturated surface dry (SSD) or saturated surface damp surface. Trowel or brush apply a 1.6 to 2 mm (60-80 mils) thick layer in two coats. CEM-KOTE FLEX PLUS can also be spray-applied using a hopper gun or positive displacement (moyno or carrousel) pump with a suitable plastering spray nozzle with compressed air at the nozzle. The hose size diameter is 25 mm (1″).

When applying by sprayer, both coats need to be brushed to achieve the continuity of the coating and for elimination of pinholes. When spraying, avoid a localized “build-up” of the coating; this could result in the formation of plastic shrinkage cracking – “mud cracking.” If the build up accidentally occurs, use a brush to spread it out.

The second coat must be applied into a wet first coat, as soon as the first coat allows the application of the second coat. The time between the coats will depend on temperature, relative humidity, surface porosity, sun, wind, etc. The delayed application of the second coat could result in its de-bonding. If the first coat is left to dry overnight, clean the surface with pressure water [14 – 24 MPa (2,000 – 3,500 psi)] and let dry prior to application of the next coat.

Reinforcing Fabric
In some projects, REINFORCING FABRIC HD may have to be used throughout. When using REINFORCING FABRIC HD, apply first a thin layer of CEM-KOTE FLEX PLUS by brushing or spraying. When spraying, brush each coat to eliminate all pinholes. Embed REINFORCING FABRIC HD into the first coat and follow with a second coat. REINFORCING FABRIC HD must be fully covered and must not protrude through the surface. The total applied thickness of CEM-KOTE FLEX PLUS, including REINFORCING FABRIC HD, should be 1.6 – 2 mm (60 – 80 mils).

Curing
Cure CEM-KOTE FLEX PLUS by air-drying for a minimum of three days prior to continuous exposure to water. Protect fresh applications from rain, strong wind, and intense sunlight for 12 hours. When working under tarps at freezing temperatures, use electrical heaters. Avoid using propane heaters to prevent “carbonation” of the material.

Cleanup
All tools must be cleaned with water immediately after use. Cured material must be removed mechanically.

MAINTENANCE
None required.

WARRANTY
A limited twelve (12) month Material Replacement Warranty is available. For details, contact Technical Service.

TECHNICAL SERVICE
For technical advice on the suitability of CEM-KOTE FLEX PLUS for a specific application, specification assistance, and application instructions, contact Technical Service at 1-800-563-3618.

Short Specification
The waterproofing will be CEM-KOTE FLEX PLUS, a highly elastomeric, polymer-modified cement manufactured by Gemite_® Products Inc. (905-672-2020). It will be mixed and applied according to manufacturer’s specifications and recommendations. Contact our Technical Service for Specification Assistance and Application Instructions.

2004 MASTERFORMAT NUMBER AND TITLE
07 16 13 – Polymer Modified Cement Waterproofing

LEED INFORMATION

May help contribute to LEED credits:

• EA Credit 1: Optimize Energy Performance
• IEQ Credit 3.1: Construction Indoor Air Quality Management Plan – During Construction
• MR Credit 2: Construction Waste Management
• MR Credit 4: Recycled Content
• MR Credit 5: Regional Materials

2010-11

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