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Product Data Sheet

ClearKote Waterproof Membrane

Clear, water based, aliphatic polyurethane, trafficable waterproofing membrane

Description

Duram ClearKote Waterproof Membrane is a clear, water based, aliphatic polyurethane waterproofing membrane/ coating that cures to form a clear, tough, durable, flexible, trafficable, abrasion and anti-scratch resistant, waterproof membrane in a clear gloss finish.

Duram ClearKote is formulated for exposure to sunlight and is designed for applications where the original appearance of the substrate is desired such as tiled areas.

Duram ClearKote Waterproofing Membrane is therefore ideal for:

Duram ClearKote Waterproofing Membrane incorporates adhesion enhancers to enable it to bond to non-porous surfaces.

Best applied by an experienced applicator.

Uses

Duram ClearKote Waterproofing Membrane, as the name indicates, is a clear, trafficable waterproofing membrane / coating and has been formulated for:

1. It provides a trafficable waterproofing membrane over tiled areas. Water penetration problems can therefore be solved without removing the tiles.

Suitable areas include:
• Tiled balconies, courtyards, terraces etc.
• Wet areas.
• Waterproofing of terracotta tiles and pavers.

2. Top coat for epoxy flake flooring

3. Top coating / sealing of timber floors.

4. Sealing sandstone surfaces.

5. Waterproofing of water features, fountains, ponds and flower pots.

NB: Due to the variety and types of substrates, test areas for adhesion are highly recommended before proceeding.

Suitable Surfaces

Suitable surfaces that have been properly cleaned and prepared surfaces include:
• tiles
• pavers
• terracotta tiles and pavers
• timber
• sandstone and many masonry substrates
• concrete and cementitious substrates.
• water based epoxy primers.

Test areas are highly recommended before general application.

Specification

The information contained in this product data sheet is typical but does not constitute a full specification as conditions and specific requirements may vary from project to project. The instructions should be considered as a minimum requirement but the applicator or contractor must use their skill, knowledge and experience to carry out additional works as may be necessary to meet the requirements of the project. Specification for specific projects should be sought from the Company in writing.

Limitations

Trafficability: Duram ClearKote Waterproofing Membrane is tough and durable and can withstand general foot traffic. However, as the membrane has some flexibility, it can be damaged by point loads, heavy weights, sharps, scuffing, dragging items across the surface and general excessive abuse and should be protected against these. It is not suitable for vehicular traffic.

Staining: As we are unable to test for all manner of stains and sources of stains, as a precaution given that the membrane is clear and is most likely more susceptible to showing stains than a coloured coating, the membrane should be protected from possible sources of stains such as chemicals, dyes, certain wines etc. Spills should be immediately cleaned with a suitable detergent.

Desire for a clear finish: As a clear finish is desired, some conventional methods for preparation, priming, reinforcing, and sealing of joints, gaps and corners are inappropriate and their omission may render some applications where movement in joints, corners and cracks are excessive, substantial or beyond the capability of the membrane unsuitable.

Test Areas: Due to the variety and types of substrates and finishes and prior treatments, test areas for adhesion and performance are recommended before general application.

Best applied by an experienced applicator.

Benefits and Advantages

• It is a genuine waterproofing membrane, not simply a clear sealer.
•  It can be applied to tiles and pavers.
• Anti scratching and abrasion resistant.
• Excellent exterior durability and low yellowing.
• Good early hardness development.
• Good chemical and solvent resistance.
•  Dries clear with a gloss finish.
• Trafficable.
• Can be used exposed to sunlight.
• Can be made anti-slip using clear aggregate.
• Solves waterproofing problems to tiles areas without removing tiles.
• Good bonding to non-porous surfaces (testing is highly recommended).

Precautions in Use

It is water based based products, has low VOC's and is not considered dangerous or hazardous according to the WorkSafe criteria. Nonetheless, good industrial practices such as wearing gloves and safety goggles against splashes should be observed.

Product should be applied by an experienced applicator.

Slippery Surface: The surface may be slippery when wet and users should be careful when these conditions occur. Note: the membrane can be made anti-slip with the addition of clear aggregate. Refer to application instructions.

Priming and Surface Preparation

Good preparation is essential. Surfaces must be sound, stable, dry, clean and free of dust, loose, flaking, friable material and substances that may diminish adhesion.

 

Subject to the limitations as stated above, the following preparation should be carried out.
For tiled areas:
• Surfaces must be clean, dry and free of grease, grime, mould, fungi, dust, loose material and substances that may diminish adhesion.
• Surfaces should be thoroughly cleaned and flushed to remove detergent residues and allowed to dry.
• As far as possible restore the substrate to a sound condition.
• Cracked, loose or damaged grout should be replaced and fully cured.
• Cracks should be filled with a clear, acetic free silicon sealant, finished off neatly and allowed to dry.
• Prime as detailed under 'Detailing Preparation' below.

To seal timber or other substrates:
• Surfaces must be clean, dry and free of grease, grime, mould, fungi, dust, loose material and substances that may diminish adhesion.
• Surfaces should be thoroughly cleaned and flushed to remove detergent residues and allowed to dry.
• As far as possible restore the substrate to a sound condition.

Top Coat For Epoxy Flake Flooring
• Floor should be sound and imperfections suitably filled.
• Surfaces must be clean, dry and free of grease, grime, mould, fungi, dust, loose material and substances that may diminish adhesion.
• Surfaces should be thoroughly cleaned and flushed to remove detergent residues and allowed to dry.
• Apply one or two coats of Duram Primeseal, applied at the rate of 3m² to 4m² per coat allowing each coat to dry before applying the next.
The cured finish should appear as  a solid, opaque off-whIte or grey colour.
• If surface is slightly damp or has a risk of water vapour transmission apply Duram Primeseal MC instead of Duram Primeseal.

Detailing Preparation

To Tiled Areas:
After the surface preparation as above-
• Apply one thin, even coat of ClearKote Tile Primer at approximately 8m² per litre over the entire surface ensuring that there are no pooled areas of the product.
• Important: Ensure that the surface is entirely coated with the primer. Care should be taken as the product is clear. Unprimed or inadeqautely primed areas may diminish or negate adhesion. 

Application

Apply by roller, soft broom or brush.
Do not apply if the ambient temperature or substrate temperature is below 10ºC, likely to fall below 10ºC or below the dew point temperature during the coating's drying and curing process. 
Do not apply the product when rain or inclement weather is imminent or expected including during the product's drying and curing process.
Protect the product from rain, water damage, dust and falling items that may lodge in the wet membrane until it has fully cured.
This product should be applied by an experienced applicator.

As a Waterproofing Membrane Over Tiles 
As soon as the Clearkote Tile Primer is dry apply 2 or 3 thin coats of Duram ClearKote Waterproofing Membrane at the rate of approximately 3m² per Lts per coat allowing each coat to dry before applying the next. The following coats should be applied as soon after the preceding coat is dry and best within 24 hours. The minimum dry film thickness of the membrane should be 0.5mm (500 micron) and thicker in areas subject to movement such as corners and joints.
Note 1: Thick coats may take longer to dry and may result is the coating 'milking up' when wet.
Note 2: The product is self leveling. Care should be taken on sloping beds so that the product does not run to unwanted areas.

Anti-slip: To make the membrane 'anti-slip', Duram ClearGrit should be hand broadcast in to the first wet coat of the product at the rate of 1 kg of Duram ClearGrit per 15 Lt pail of Duram ClearKote. Allow to dry, then apply 1 or 2 additional coats of Duram ClearKote as above.

Epoxy Flake Flooring
After laying the flake, roll 2 or 3 coats of the product over the surface at 5m² to 10m² per Lt per coat allowing the preceding coat to dry before applying the next and best within 24 hours.

Timber Floors
Roll 2 or 3 coats of the product over the surface at 5m² to 10m² per Lt per coat allowing the preceding coat to dry before applying the next and best within 24 hours.

General Sealing and Waterproofing
Roll 2 or 3 coats of the product over the surface at 3m² to 4m² per Lt per coat allowing the preceding coat to dry before applying the next and best within 24 hours.

The membrane will attain full strength and durability within  3 to 7 days and it should not be subject to traffic for at least this period.

Coverage

The stated average coverage rate may vary depending upon type, condition, porosity, texture of the surface and application technique.

 

Coverage (usage) varies from 2m² to 10m² per Lt per coat depending upon purpose for use. Refer to Application instructions.
Porous surfaces will use more material.

Colours

Clear.

Drying and Curing

Drying and curing of the product is affected by type, dryness and porosity of the surface, temperature, humidity, ventilation, climate conditions and application technique and therefore drying and curing can only be given as a guide.

 

Per coat, on average at 25ºC at 50 R.H. based on 100 micron wet film thickness:
Touch dry     -     30 minutes
Re-coat         -     4 hours.
Dry                -     < 24 hours.
Full Cure       -     3 to 7 days.

Storage

Store in unopened and undamaged containers in a cool and dry areas. Product is non-flammable.

Clean Up

Wet spills can be cleaned with water.

Tiling, Topping or Top Coating

Generally left exposed.

Safety & Precautions

The product is water based and is not considered dangerous or hazardous according the the criteria of WorkSafe Australia.
The use of gloves and eye protection is recommended.
Use in well ventilated areas.

First Aid
Eye Contact: Flush with clean water for 10 to 15 minutes holding eye lid open. Seek medical attention if irritation persists.
Swallowed: Drink large amounts of water and seek medical attention.
Skin: Remove contaminated clothing and wash skin with soap and warm water.

 

For full safety data refer to the products Material Safety Data Sheet. Observe precautions as per label.

Issued: 1 May 2012 | Valid to: 31 May 2020

Conditions of Use and Disclaimer

The information contained in this Material Data Sheet is given in good faith based upon our current knowledge and does not imply warranty, express or implied. The information is provided and the product is sold on the basis that the product is used for its intended purpose and is used in a proper workmanlike manner in accordance with the instructions of the Product Data Sheet in suitable and safe working conditions. Under no circumstances will the Company be liable for loss, consequential or otherwise, arising from the use of the product.

 

DURAM PTY LTD ABN 50 612 836 718
The Ultimate in Waterproofing & Protective Coating Technology

Duram Offices:
NEW SOUTH WALES: 51 Prince William Drive, Seven Hills, NSW 2147

 Tel (02) 9624 4077  Fax: (02) 9624 4079

QUEENSLAND: Unit 4, 29 Collinsvale St Rocklea, QLD 4106

Tel (07) 3255 6478  Fax: (07) 3255 6258