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Weber Saint-Gobain - Official website of the company

webersys protect

webersys protect
webersys protect

Product Benefits

For protecting walls and floors that are sensitive to water in:

● Humid areas such as sanitary blocks, showers and kitchen

● Ideal for wet rooms prior to tiling

A ready-mixed, under-tile tanking system to protect water-sensitive substrates from exposure to water.

For protecting walls and floors that are sensitive to water in humid areas, such as sanitary blocks, showers and kitchens.

Product Features

About this Product

webersys protec is a ready-mixed, under-tile tanking system to protect water sensitive substrates from exposure to water.

For the complete wet room drainage solution visit

Features and Benefits

▲ Protects water-sensitive substrates such as wood, plaster etc.
▲ Ready to use - no mixing required
▲ Easy to use - apply with a roller
▲ Supplied in shower-sized kit and trade pack


Not suitable for waterproofing exterior building walls, industrial floors or unstable surfaces.

Not suitable for tanking areas that are continually immersed, such as ponds and pools.

Not suitable for waterproofing roofs and terraces.

Not resistant to pressuring washing on some substrates

Technical Services

Weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.

Technical helpline
Tel: (01525) 722110
Fax: (01525) 718988


Send or download the documents

You can either send the documents to an email address, or download it

Preparation & Application


Ensure that all surfaces are clean, completely dry, sound and free from dust grease or any other contaminating barrier. Any joints between wood panels must be fully supported to prevent movement.

Any existing covering must be sound and capable of supporting the expected load. Scrape off any flaking paint and replace any hollow sounding tiles. Emulsion paint is not suitable. Wash off any traces of maintenance products (wax etc.) or grease and allow to dry.

Prime porous surfaces, such as plaster or cement, with weber PR360 and allow to dry for 2 hours.


Do not apply if the temperature is outside of the range +5°C to +35°C and do not apply to frozen, thawing or hot substrates or in direct sunlight. Ensure that any concealed underfloor heating system is turned off and that the floor is cool.

Apply a coat of webersys protec with a flat brush to corners, angles, around protruding pipes, into small cracks (must be stable and less than 2 mm wide) and along the joints between wooden panels.

Place strips of BE14 Joint Reinforcing Tape along the angles and cut to size with scissors so that all lengths fit tightly into any corners.

Reinforce around protruding pipes by cutting a star opening in a suitable length of tape, pushing the patch over the pipe and bedding it into the webersys protec tightly around the pipe.

Taking care not to damage the tape, work it into the webersys protec and smooth down with a flat trowel.

Do not butt-join or cut the tape short at corners. Overlap joints and all layers at corners, bedding into webersys protec. Generously apply the first coat of webersys protec to the area with a roller using around 0.4 kg/m2.

As soon as the first coat is dry, apply a second coat, rollering in a direction 90° to the first coat, to obtain an overall film around 1 mm thick. Wash tools in water immediately after use.

Allow to dry for at least 3-4 hours, or until the webersys protect is no longer tacky, before fixing the tiles with weberset SPF or weberset rapid SPF. When the adhesive has fully set, grout the joints with an appropriate grout. Fill the joints around the perimeters with weberjoint silicone.

Packaging, Health & Safety

Storage and Shelf Life

When stored airtight in a cool, dry place at temperatures above 5°C and protected from frost, shelf life is 12 months from date of manufacture.