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Weber - Saint-Gobain

webertec bedding mortar

webertec bedding mortar
webertec bedding mortar

Product Benefits

Typical applications include: ● bedding/fixing manhole frames ● bedding of airport landing lights ● bedding of duct frames ● fixing precast concrete units e.g. kerbstones

webertec bedding mortar is suitable for external use on: ● concrete ● dense brickwork ● asphalt ● stone ● block paviors

Polyester-based mortar for bedding and fixing manhole frames, kerb stones, airport lighting bases, ducting, drains and highway fixtures

Product Features

About this Product

webertec bedding mortar is a three-component, polyester-based mortar for the bedding and fixing of manhole frames, airport landing lights, duct frames and precast concrete units. It has been formulated for easy mixing and placement, even at low temperatures and, when cured, provides a durable, chemically resistant bedding and fixing material with good bond strength.

Features and Benefits

  • Meets the performance specification resulting from thehighways Agency sponsored LINK research contract carried out by Nottingham University's Department of Civil Engineering (1977).
  • Easy to mix and place.
  • Good working time for ease of placement.
  • Rapid setting for quick return to service (within 2 hours at 20°C).
  • Rapid grade available for cold weather working or fast completion work.
  • Good chemical and freeze/thaw resistance.

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 receive the ironwork, metal bases etc. must be mechanically sound, dry and clean. All loose and friable material must be removed. Surface must be free from all dirt, dust, oil, grease, laitance etc. At temperature below 5°C when using the Rapid (Winter Grade), surfaces must be free of ice and frost.

It is extremely important that the substrate to receive the mortar material is adequately prepared, dry and free of loose and deleterious matter. If not, the bond between the resin mortar and the substrate will be greatly reduced. This could lead to bond failure at the substrate interface which will result in lateral and vertical displacement of the fixture. Avoid using heavy breakers to prepare the substrate. They are likely to induce cracking in the base which will result in the substrate becoming unstable. When preparing the substrate use wire brushes, light needle gunning or similar to remove loose and deleterious matter and for maximum bond between substrate and resin mortar the surface should be left roughened.


Pour the contents of the tin of resin (provided separately) into a clean plastic bucket.

Slowly add the contents of the bag of hardener while mixing with a slow speed mechanical mixer (450 rpm or similar) and a helical mixer attachment such as an EPI mixer MR4-130B. Mix for approximately 1 minute. Then add the filler component and mix for 2 minutes, ensuring that the material achieves a uniform colour and consistency. Do not part mix, only mix together entire packs of resin and hardener/filler.

If it is necessary to mix the resin mortar by means of a spot board and shovel or similar, extreme care must be taken to ensure the material is mixed thoroughly and achieves a homogeneous colour and consistency. Mixing time should be for at least 3 minutes. Mixing equipment must be clean and not contaminated with dirt.


Manhole cover frames

When installing manhole cover frames it may be necessary to first place the frame on shims to ensure the correct line and level is achieved If shims are to be utilised they must be made from a non degradable, durable material which will not deflect under the weight of the frame and be manufactured in a range of thicknesses to allow accurate levelling. This is important in order to prevent any rocking of the frame during and after installation.

Remove the manhole frame and set aside.

Ensure the top and underside of the cover flange is dry and free from oil, grease etc, any loose scale or rust is completely removed. immediately after mixing place the Resin Mortar around the perimeter of the manhole chamber to depth of at least 20 to 25 mm beneath the seating area of the frame and spread across the full width of the chamber walls. Tamp the frame into position ensuring the correct line and level is established and maintained. Press the mortar into any gaps that may form along the inside edge of the frame and trim off the excess material. Place an additional thickness of mortar in any available frame holes and above the area of the flange. The thickness of mortar should be greater than 10 mm float the exposed surface of the mortar around the outside of the frame to fill any residual voids and remove any loose fragments. The mortar should be taken a minimum of 100 mm beyond the outside edge of the flange or to the edge of the excavation. In all cases to reduce the possibility of lateral displacement of the frame by skid forces, the mortar should be taken to the cut edge of the excavation in the direction of traffic flow.

Airport light bases

When installing lighting bases, place the mortar into the base of the drilled hole in the form of a pyramid. Ensure that enough mortar is used to form a firm base. Lower the light base onto the mortar and squeeze into place with a rotating motion. Use a levelling device to provide correct alignment.


Clean all equipment with webertec solvent 3 before the resin has time to set. When using rubber buckets for mixing, allow the resin to set then remove by flexing the bucket.

Packaging, Health & Safety


webertec bedding mortar is supplied in plastic buckets containing 1 tin of resin, 1 large bag of filler and 1 small bag of hardener.

Total weight 25 kg.

Coverage / Yield

Yield approx. 12 litres per 25 kg pack

Storage and Shelf Life

Store in a cool, dry place. Shelf life in correct storage conditions is 12 months.

Health and Safety

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