Febsilicon Exterior Waterproofer - 5 Litres

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* COVID-19: Due to supplier issues this product isn't currently available to purchase.

£32.92 Incl. VAT
£27.43 Ex. VAT
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    £28.82 Incl. VAT
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Product Description


Description of Product
FEBSILICON is an external surface applied water-resistant compound for brickwork and certain types of natural and artificial stonework. FEBSILICON penetrates deeply beneath the surface to deposit a silicone barrier in the capillary channels, substantially reducing rain penetration and helping to keep the surface clean.

Typical Uses
To substantially reduce the water permeability of external brickwork, weathered asbestos sheeting and certain types of artificial stonework, suitable for application to vertical surfaces only.

Features and Benefits

  • Deeply penetrating, water repellent.
  • Colourless, long lasting.
  • Protects surface from discolouration due to pollution.
  • Helps to reduce efflorescence.
  • Economical and easy to use.

When applied by brush or spray to surfaces of natural stonework, brickwork, certain types of concrete block, artificial stonework and cement paint, it penetrates deeply beneath the surface to line the pores with a thin water repellent coating without significantly changing the appearance or affecting the breathing property of the wall. This substantially reduces rain and damp penetration, protects the surface from discolouration and weathering and aids in preventing efflorescence and spalling of the surface from frost attack. In industrial areas, the sealing of masonry with FEBSILICON protects the surface from attack by the acidified atmosphere and aids in preventing discolouration by smoke.

Effect on Thermal Insulation: Loss of heat through wet brickwork, etc., is one and half times greater than when it is dry. Prevention of rain and damp penetration with FEBSILICON therefore aids in preserving the heat insulating properties of the wall.

Effect on Masonry:
The application of FEBSILICON does not significantly change, darken or form a sheen on the surface treated.

Instructions for use
Preparation of Substrate
The surface to be treated should be dry and free from loose matter. Defective joints in brick and stonework should be re-pointed. It is not necessary to treat hair cracks, but large cracks should be made good and allowed to dry before treatment. Efflorescence should, as far as possible, be removed by brushing the surface of the re-pointed areas.


Stir before use. Apply by brush or low pressure spray in one coat, in conditions of adequate ventilation. The FEBSILICON is flooded on to the surface so that a run down of approximately 300mm is obtained.

Coverage will vary according to the porosity of the surface treated and will be from 8m² per litre on hard brickwork to 3m²/ltr on highly porous surfaces (the latter may require two coats).

Keep away from food. Store in unopened containers in cool, dry conditions away from sources of ignition and heat.

Shelf Life
Up to two years when stored as recommended.

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Febsilicon Exterior Waterproofer - 5 Litres

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