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Weber Saint-Gobain - Official website of the company

webertec mortar

webertec mortar
webertec mortar

Product Benefits

  • Patch repairs to small defects in concrete
  • Repair of pre-cast kerbs
  • Fixing small bolts and bedding steel plates
  • For rapid set fixing of bridge bearing pads
  • Repairs to concrete steps

Fast-setting, multi-purpose mortar

Product Features

About this Product

webertec mortar is a three-component polyester resin mortar suitable for small concrete repairs. Comprises a liquid resin, powder hardener and filler to produce either a pourable mortar or stiff mortar. It can be applied in thicknesses of 3 mm to 50 mm maximum. Two grades are available for use in different temperatures.

Conforms with BS EN 1504-3.

Features and Benefits

  • Fast setting for quick and easy installation 
  • High strength allows rapid return to use
  • Can be used in cold temperatures down to 0°C and still provide rapid set
  • Economical usage through part mixing by volume – use only what is required

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


All surfaces must be mechanically sound, dry and clean. Ensure surfaces are free from dirt dust, paint, grease and any other contamination.

Cement laitance should be removed from concrete.

New concrete should be 28 days old.


Part mixing

Measuring cups are provided in 25 kg pack and the mixing ratio is:

  • 2 cups liquid resin
  • 1 cup white powder hardener
  • 3 to 6 cups grey filler

Note: Do not mix more than 4 cups of resin, 2 cups of hardener and 12 cups of filler.

Mix and place small quantities of webertec mortar to avoid wastage.

Pour the resin into a clean, dry plastic or rubber bucket and gradually stir in the white powder hardener using a flat blade or palette knife. Stir until a uniform colour and consistency is achieved, then slowly add the grey filler and mix to the required consistency.

Add 3 cups of filler for a fluid mortar and 6 cups for a stiff mortar.

Small quantities can be mixed by hand using a flat blade or alternatively in a forced-action mixer.


Immediately after mixing, place the mortar ensuring it is in full contact with the surfaces and compacted into position. webertec mortar sets quickly and should be used immediately after mixing.

Setting times are dependent on temperature and are detailed in the Technical Data table on the datasheet PDF.

Packaging, Health & Safety


webertec mortar is supplied in a 25 kg pack.

Coverage / Yield

One 25 kg pack yields a volume of 12.5 litres.

Storage and Shelf Life

Store in a cool dry place, protect from frost and direct sunlight. Shelf life in correct storage conditions is at least 12 months.

When used in hot climates, cool or cold storage conditions will extend the working time of the product.

Health and Safety

Polyester based.

For further information, see Health and Safety section, starting on page 304.