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Weber Saint-Gobain - Official website of the company

webertec grout FG

webertec grout FG
webertec grout FG

Product Benefits

● Fixing airport lighting units

● Fixing vertical bolts, starter bars and dowels

● Grouting anchor bolts and holding down bolts

Fast-setting high strength flowing grout.

Product Features

About this Product

webertec grout FG is a three-component polyester grout for anchoring and fixing. Fast-setting for rapid installation and can be used down to 0°C. Flowing grout to fill gaps of between 5 mm up to 90 mm dependent upon bulking out with aggregate.

Features and Benefits

▲ Fast-seting with rapid strength gain, allowing loads to be applied within 2 hours at 20°C ▲ Available in standard and rapid grades depending upon temperature ▲ Excellent adhesion to concrete and asphalt substrates ▲ Can be bulked out for varying gap sizes, 5 mm - 90 mm ▲ Proven technology with reliability ▲ Over 30 years experience worldwide

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


It is essential that all surfaces are clean, sound and dry. Inadequate preparation is likely to lead to a failure of bond.

Concrete surfaces should be prepared by suitable mechanical method to provide a clean, freshly exposed concrete surface. Drill holes with a rotary percussive drill to provide a rough side to the drilled hole suitable for anchorage.

New concrete must be 28 days old and free of any cement laitance.

Steel surfaces should be free of any surface rust and grit blasted. Degrease with webertec solvent 3.

Asphalt surfaces should be clean, sound and dry. Ensure any cut surfaces are washed to remove any slurry or dirt.



Pour the resin into a clean plastic or other suitable container and gradually add the small bag containing hardener.  Mix thoroughly.  Now add the large bag containing filler and mix until a uniform colour and consistency is achieved.

Small quantities can be mixed by hand using a spatula, flat stick etc.  Larger quantities should be mixed using a mechanical stirrer or electric drill attachment, such as an MR4-100 blade at a speed below 450 rpm.

webertec grout FG when mixed is used for annular gaps of between 5 mm and 12 mm. For larger gaps, webertec grout FG can be bulked out as follows:

Gap sizeMaterialsYield
5-12mmwebertec grout FG 12 litres
12-25mmUp to 20 kg oven dried 8-16 grade sand per pack grout20 litres
20-40mmUp to 27 kg of aggregate single size 5-6 mm per pack grout 22 litres
30-90mm15 kg of aggregate, single size 10 mm per pack of grout18 litres

NB: do not use site sand or aggregates. 



webertec grout FG must be placed immediately after mixing, due to the rapid set of the grout.

Setting times are dependent on temperature and these are shown in the technical data on the datasheet PDF.

Ensure there are no voids or entrapped air in the gap.

It is recommended that in hot weather, the product is kept as cool as possible.

Packaging, Health & Safety


webertec grout FG is supplied in 23.3 kg packs.

Coverage / Yield

Yield is dependent upon bulking out - see Mixing.

Storage and Shelf Life

Store in a cool, dry place.

Shelf life of unopened packs is at least 12 months.

For hot weather conditions, it is recommended that webertec grout FG is kept cool in a refrigerated container and in insulated boxes on site. This will ensure a longer working time.

Health and Safety

For further information, please request the Material Safety Data Sheet for this product.