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Weber - Saint-Gobain

weber PR310

weber PR310
weber PR310

Product Benefits

  • For preparing substrates prior to the application of many Weber finishes 
  • Used to reduce suction and also to colour wash the substrate to ensure that the finish is not marred by 'grinning' from the preceding layer. 
  • Will assist in ensuring that the subsequent finishes will have a minimum life of 10 years.

Liquid paint primer

Product Features

About this Product

weber PR310 is a general purpose liquid paint primer.

Features and Benefits

  • Low viscosity
  • Factory batched for consistency
  • Practical benefits of ease of application, speed, economy and long shelf-life
  • Established track record in varying climatic conditions


Do not apply:
During very humid weather conditions or if rain is forecast
During extreme hot weather or when exposed to strong winds
On damp or frozen / thawing surfaces
On horizontal or sloping surfaces
exposed to wet conditions

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

Sales, England and Wales
Tel: (01525) 722100
Fax: (01525) 718988

Sales, Scotland
Tel: (0141) 445 0121
Fax: (0141) 445 0122

Sales, Ireland
Tel: (028) 9335 2999
Fax: (028) 9332 3232


Product Datasheet

Material Safety Datasheet

Send or download the documents

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

Preparation & Application


Substrates must be clean, sound, dry and free of dust or other contamination


Stir well in buckets prior to applying to the work area. weber PR310 is ready to use - do not add water.

Apply to the wall surface using brush, spray or roller. Ensure complete coverage of all areas before over coating, to prevent 'grinning through'of the background.

Apply weber PR310 at least 24 hours prior to application of the synthetic finish. Allow to dry. The drying period will vary according to weather conditions.

Note: If the selected finish is alpine, refer to the Data Sheet for specific information regarding the application of the primer.

Spillages stain and are difficult to remove so:

  • protect vulnerable areas thoroughly
  • wear protective clothing
  • clean tools with water immediately after use

Good Practice:

Do not apply:

  • If frost is forecast within 24 hours of use
  • In damp/wet conditions
  • In temperatures below 5°C or above 30°C
  • On elevations in direct sunlight or where the substrate is hot


weber PR310 is packaged in 10 litre plastic containers with batch code, description and colour on the side.

Packaging, Health & Safety

Storage and Shelf Life

Wet pre-mixed materials must be stored frost‑free and protected from direct sunlight and extreme heat. To prevent ingress of air, buckets should be stacked no more than 2 high, and where a central support is used, to a maximum height of 4. When stored under these conditions, the shelf life of the product is 12 months from the date of manufacture.  

Health and Safety

Essentially not hazardous. Not harmful during normal use. After contact with skin, wash immediately with plenty of water. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Keep out of the reach of children. For further information, please request the Material Safety Data Sheet for this product.