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Weber Saint-Gobain - Official website of the company

webercote primer

webercote primer
webercote primer

Product Benefits

● Used for sealing and hardening dusty or friable surfaces ● Suitable for the following substrates: New and old concrete, brickwork, masonry and renders ● Used as a treatment against effloresence or as a foundation for further decoration ● Used as a primer for webercote anti-carbonation coatings

Low-viscosity stabilising sealer

Product Features

About this Product

webercote primer is a low viscosity surface sealer and stabiliser formulated to penetrate into the surface of permeable, dusty substrates and to consolidate them.

Features and Benefits

  • Single component, giving ease of application - apply by brush, roller or spray
  • Prevents surface dusting
  • Prevents grime penetration
  • Resists the penetration of water droplets and salt solutions
  • Colourless solution, essentially non toxic
  • Vapour permeable, allowing substrates to breathe
  • Essentially non-toxic
  • Can be used in confined spaces

Technical Data

EU limit for webercote primer (cat A/g or h):

50 g/l (2007)/30 g/l (2010). webercote primer contains <30 g/l VOC.

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

Sales Contact

weber products are distributed throughout the UK through selected stockists and distributors. For UK sales enquiries and overseas projects, contact weber's Sales office.

Sales office
Tel: (01525) 722100
Fax: (01525) 718988


Send or download the documents

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

Preparation & Application


Surfaces to be treated with webercote primer must be clean, dry and free from moss, lichen, fungal growth, oil, grease or loose material.

In addition, new and old concrete surfaces should be free from curing agents and mould release oils.

Existing coatings and painted surfaces must be checked for integrity and adhesion. A bond test should be carried out to assess suitability of existing coating for priming and overcoating.

Glossy surfaces should be roughened to provide a key.

Remove moss, fungal growth and lichen using weber CL150 in accordance with the instructions on the packaging and datasheet.

Laitance or chalky, friable or flaking decorated surfaces should be removed by wire brushing.


One liberal coat is normally adequate as a foundation for subsequent decoration. Two coats may be applied if used as a surfacesealed finish.

webercote primer should be applied to refusal using a brush, short haired roller or spray, allowing to dry before any further applications or decorative coatings are applied. Drying times depend on surface porosity and temperature, typically 4 - 6 hours at 20°C.

Do not apply when it is raining as webercote primer is water based and will be washed away. If rain occurs after an hour from application, little damage will occur under normal drying conditions.

webercote primer can be applied in a confined space, but ventilation is required to ensure proper drying.

Do not apply webercote primer if the temperature is below 4°C on a falling thermometer.


Clean all brushes, rollers and spray equipment with clean water immediately after use, before the product dries.


Surfaces sealed with webercote primer require little maintenance, and can be washed down frequently with water without deterioration.

Packaging, Health & Safety


webercote primer is supplied in 5 litre non returnable containers.

Coverage / Yield

The coverage will vary according to the permeability and roughness of the substrate. On most substrates the coverage will be between 4 to 10m2 per litre per coat.

Storage and Shelf Life

Protect from frost.

Store in clean, dry conditions between 5oC and 30oC.

When stored in correct conditions a shelf life of 2 years can be expected.

Health and Safety

Essentially non-hazardous.

webercote primer is difficult to remove once set. Therefore, although this product is essentially nontoxic, it should not be allowed to come in contact with the skin.

Operatives are advised to were protective clothing including gloves. When spraying dust masks and eye protection should also be worn.

If product enters eye, wash immediately with clean water and seek medical advice if discomfort continues.

For further details on safe handling, please refer to the relevant Material Safety Data Sheet.