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Sikadur 31+ - 6KG (Formerly Sikadur 31EF)

Sikadur 31+ - 6KG (Formerly Sikadur 31EF)

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£82.98(Inc VAT)
£69.15(Ex VAT)
SKU: 3092Category: Structural Repair Brand: Sika
Sikadur 31+ is a two-part adhesive and concrete repair mortar. Resistant against chemicals and abrasion, Sikadur 31+ is compatible with most construct... Read full description

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Sikadur 31+ is a two-part adhesive and concrete repair mortar. Resistant against chemicals and abrasion, Sikadur 31+ is compatible with most construction materials.

Sikadur 31+ uses:

  • Sikadur 31 is used to bond materials such as concrete, mortar, natural stone, steel, iron, wood, fibre cement, brick masonry, brick slips and ceramics.
  • Concrete repair
  • Joint filling
  • Crack sealing
  • Sikadur 31+ is also used to repair and refill structural concrete elements, non-structural concrete elements, small patches and edges. 
  • There are cases where Sikadur 31 can be used for filling and sealing such as joint arrises, cracks, holes and voids. 

Sikadur 31+ benefits:

  • Easy to mix and apply
  • Good adhesion to most construction materials
  • Hardens without shrinkage
  • No primer needed
  • Very low VOC
  • Abrasion & chemical resistant
  • Application of up to 30 mm thickness in one layer
  • Temperature application range +10 °C to +30 °C.
Download the Sikadur 31 technical datasheet  (PDF)

Estimated delivery 1-2 working days to UK mainland



Delivery and Return

Charges start from £6.90 inc vat on small, lightweight orders and £22.50 inc vat on heavier or difficult to transport items.

All small item orders with a value of £100.00 inc vat will be carriage paid.

All large item orders with a value of £200.00 inc vat will be carriage paid.

*small or large classification of items are determined by weight and dimension of product*

Please note that your order may need to be split into separate packages if over 30KG.

All of the above is based on UK Mainland deliveries, further charges may be incurred if the delivery address is outside of this.

We are also currently unable to deliver outside of the UK on our regular carrier so if you require delivery outside the UK please call or email the details to the office as we reserve the right to refuse service or refund orders based on this.

Guarantee next day delivery.

Some of our products have a note that states – if ordered before 1pm and being delivered to UK mainland on a next day basis.

Please note that given the current circumstances alot of carrier companies are struggling to keep up with demand and although we do book these deliveries as next day services, the carriers cannot always fulfil these and an extra day may be required.

A high percentage of our advertised goods are stock items but be aware that if you are taking very large quantities of stock that we may not be able to fill your order fully on first delivery. Please call the office to check to not be disappointed.

We are also an active trade counter and part of a larger network of companies so stock can be taken at any time but we will always aim to deliver your goods as soon as possible.

Also if ordered along side goods that we cannot guarantee next day delivery on, these will be delivered based on the schedule of the other item.

Signature required on delivery.

The carrier we currently use requires a signature for all deliveries as a proof of delivery. If you cannot guarantee someone will be home to receive this please leave delivery instructions for a safe place or neighbour to leave your goods with. Due to covid and new contactless deliveries, our carriers will not require a signature but will take down the recipients name as POD.

If no one is available to take the delivery, the courier will leave details at the address to rearrange delivery or may leave with a neighbour. Note we may need to make an additional handling charge for the return and re-delivery if a package is unable to be delivered multiple times due to no one being home to receive this. Due to covid our carriers are restricting the number of re-delivery attempts.

After three attempted deliveries our carrier will return the goods to ourselves and in this worst case situation, we may cancel the order and refund your money, excluding any additional charge for the return and re-deliveries.

Materials delivered from our own stock.

Normally 1 – 2 days (this can sometimes be longer if we are waiting for manufacturers’ stock to arrive into ours).

If the order is placed before 1:00pm and all of the items are in stock, then we will endeavour to dispatch your order same day for delivery the following day.

This still applies for deliveries out of our local area but please note that we use independent carriers so be aware that there may be external factors which we cannot control (e.g Far out postcodes or local traffic situations)

Materials delivered direct from the manufacturer.

There may be some occasions when it is more efficient or cost effective to have the materials shipped direct from our suppliers to the customer.

We will place the order immediately upon receipt of your order but this can sometimes take a few working days depending on the manufacturers production schedule or carrier used.

We will always endeavour to get the goods to the customer at the earliest possible date but if these are urgently required, please speak to us to check.

Please note that many manufacturers will offer a next day delivery service at an increased delivery cost and also a cut of time for this order to be placed (usually around 11am / 12pm)

Please call us on 08454 530 017 between 8am and 5pm Monday – Friday or email us on [email protected] for any delivery queries, or urgent requirements.

Please read our full terms and conditions with regard to full details on deliveries.

Sikadur®-31 EF is a moisture tolerant, thixotropic, structural 2-component multi-purpose adhesive, based on a combination of epoxy resins and special fillers, designed for use at temperatures between +10 °C and +30 °C.

As a structural adhesive for:

▪ Concrete elements
▪ Hard natural stone
▪ Ceramics, fibre cement
▪ Mortar, Bricks, Masonry
▪ Steel, Iron
▪ Wood
▪ Polyester, Epoxy

As a repair material and adhesive:

▪ Corners and edges
▪ Holes and void filling
▪ Vertical and overhead use

Joint filling and crack sealing:
▪ Joint and crack arris/edge repair

There are many key features and benefits including:

▪ Easy to mix and apply
▪ Good adhesion to most construction materials
▪ Thixotropic: non-sag in vertical and overhead applications
▪ Hardens without shrinkage
▪ Different coloured components (for mixing control)
▪ No primer needed
▪ Abrasion resistant
▪ Impermeable to liquids and water vapour
▪ Chemical resistant

Yes, Sikadur®-31 is chemical resistant.

Sikadur®-31 is not waterproof but is impermeable to liquids and water vapour

The mixing instructions are as follows:

Pre-batched units:
▪ Mix components A+B together for at least 3 minutes with a mixing spindle attached to a slow-speed electric drill (approx. 300 rpm) until the material becomes smooth in consistency and uniform grey colour. Avoid aeration while mixing.

▪ Pour the whole mix into a clean container and stir
again for approx. 1 more minute at low speed to
keep air entrapment at a minimum.

▪ Mix only that quantity which can be used within its
pot life.

Application methods are as follows:

▪ When using a thin layer adhesive, apply the mixed
adhesive to the prepared surface with a spatula,
trowel, notched trowel, (or with hands protected by

▪ When applying as a repair material, use some formwork.

▪ When using for bonding metal profiles onto vertical surfaces, support and press uniformly using props for at least 12 hours, depending on the thickness applied (not more than 5 mm) and the room temperature.

▪ Once hardened check the adhesion by tapping with a hammer.

The shelf life of Sikadur®-31 is 12 months from the date of production.