Pilkington’s Waterproof Flexible-water resistant, thin-bed adhesive.

Pilkington’s Waterproof Flexible is a water resistant, thin-bed adhesive specifically designed for fixing wall tiles in areas where movement/vibration exists. In addition, it can be applied to most types of sound interior surfaces, including: plaster, cement rendering, plasterboard, old glazed tiles, wood and wood composite panels.

Pilkington’s Waterproof Flexible is suitable for use in kitchen and bathroom areas subject to frequent and prolonged wetting, and for domestic shower walls, when applied by the solid bed method. It is not impervious, however and in such cases the backgrounds must also be water resistant.

It is not recommended for exterior use, or on areas subjected to total immersion, i.e. swimming pools.

Features

* Flexible
* Water resistant
* White
* Excellent adhesion to a wide range of substrates
* Ideal for bonding mosaics
* Conforms to BS 5980 : 1980 : Type 2 : Class AA

Properties
Constitution     Acrylic dispersion based formulation
Appearance     Brilliant white paste
Mix Ratio     Ready mixed
Application Temperature     5°C to 25°C
Open Time     20 minutes at 20°C
Set Time     24 hours at 20°C
Coverage     2-3kg/m²
Pack Sizes     16kg (10 litre) buckets – 48 tubs per pallet
Notes     Times quoted are quoted at 20°C and are temperature/humidity dependent
Preparation

Ensure that all surfaces are clean, dry, sound and free from dust, grease or any contaminating barrier. Make good any unsound areas and remove flaky or peeling layers before tiling. If tiling over old ceramic tiles, check for stability and re-fix if loose.

With new concrete, screeds and rendering, or new brickwork do not commence tiling for at least four weeks to allow for shrinkage.

Check before use that the colour of the adhesive does not cause staining or discolouration of light coloured or translucent tiles.
Application

Notched Trowel Method:
The adhesive should be spread onto the wall with a plane trowel, or float to a depth of 3mm. ‘Comb’ the adhesive immediately with a notched trowel, e.g. one having 6mm x 6mm notches at 25mm centres. Press the dry tiles with a slight twisting action into the adhesive. Spread only sufficient material for about 20 minutes tiling work. It is good practice to remove a tile occasionally to check that adequate contact and wetting out are being achieved, a minimum of 70% of the back of each tile should be in good contact with the adhesive, and 100% if being used in a bathroom/shower situation.

Solid Bed Method (wet areas):
For areas that will be frequently wet, including showers, the adhesive should be spread on the background to a depth of 3mm and then ‘combed’ very lightly, simply as a means of levelling any projections. The dry tiles should then be pressed into the adhesive bed, ensuring no voids are left behind them.

Buttering Method:
Buttering the adhesive onto the back of the tiles is convenient for small areas and for fixing cut tiles. The adhesive should be spread all over the back of each tile to an even depth of 3mm.

If self spacing tiles are being used, they will automatically give the correct spacing for the tiles. If self spacing tiles are not being used, joints of between 1mm and 3mm should be left around each tile by the insertion of pieces of card or tile spacers during the fixing. Ceramic tiles should never be fixed with tight joints. Minor adjustments to the position of a tile may be made up to 40 minutes after the application. Spacers may be removed approximately 1 hour after application.
Grouting     Ensure that the adhesive has completely set and that the tiles are firm before grouting. Pilkington’s Waterproof Flexible should normally be set after 24 hours but a longer setting period may be required on sealed or impervious surfaces or at low ambient temperatures when 3 days should be allowed prior to grouting. Protect wall tiling from water for at least 3 days after grouting, or according to instructions on the grout packaging.
Cleaning     Surplus adhesive should be removed immediately from the surface of the tiles and grout lines. Tools should be cleaned immediately with water.
Storage     Shelf life 12 months when stored in dry conditions within the temperature range 5°C to 30°C. Protect from frost.
Services

This information is based on laboratory tests and extensive practical experience. It is introductory and intended to help the user find the most suitable method of working. Since the user’s application conditions are beyond our control, we cannot be responsible for the result of the work, which is affected by local circumstances. In each particular case testing and continuous control are recommended.

Contact Us.

http://www.pilkingtons.com

Pilkington’s Group Customer Services

Tel: +44 (0)161 727 1111
Fax: +44 (0)161 727 1122

Technical Advice

Tel: +44 (0)161 727 1159
Fax: +44 (0)161 727 1122

Quiligotti Access, Acoustic and Hardwood Flooring

Tel: +44 (0)161 727 1070
Fax: +44 (0)161 727 1080

Supplier and Export Enquiries

Tel: +44 (0)161 727 1111
Fax: +44 (0)161 727 1122

Manchester Head Office

Pilkington’s Group Plc,
P.O. Box 4,
Clifton Junction,
Manchester,
M27 8LP

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