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Fosroc Renderoc ST05 - 20KG & 5L Kit

Fosroc Renderoc ST05 - 20KG & 5L Kit

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£69.42(Inc VAT)
£57.85(Ex VAT)
SKU: 2534Category: Thin Section Repair Brand: Fosroc
Fosroc Renderoc ST05 consists of powder and polymer components. The powder is added to the liquid, the mixing ratio depends on the required consistenc... Read full description

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Fosroc Renderoc ST05 consists of powder and polymer components. The powder is added to the liquid, the mixing ratio depends on the required consistency and use.

Fosroc Renderoc ST05 uses:

  • For repair and use with concrete, masonry, mild steel and brickwork
  • Can be used for minor repairs as well as filling large areas

Fosroc Renderoc ST05 benefits:

  • Easy to mix and apply
  • Excellent bond to concrete without priming
  • Vertical and horizontal applications
  • High frost resistance
Some surface may require sealing with Fosroc Nitobond AR

Size: 20KG & 5L Kit

Download Fosroc Renderoc ST05 Datasheet (PDF)

Next working day delivery available to UK Mainland *If ordered before 1pm

More from the Fosroc Renderoc series

Take a look at the rest of the Fosroc Renderoc Range:



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.

Renderoc ST05 is a powder and polymer-based cementitious coating and levelling mortar for repair and on vertical, horizontal and overhead surfaces.

This product can be used on for a variety of different applications that include concrete, masonry, mild steel and brickwork. It is used to protect these surfaces against the ingress of water and moisture, active and passive water pressure, and aggressive ground water. It can also protect against certain chemicals and acids as well as to improve wear resistance.

*For advice on specific uses, please contact our helpful team.

The recommended thickness will vary depending on the type of substrate the application is being used on. For vertical applications, the thickness should be 1mm with a brush/roller, or 2mm with a trowel. For horizontal applications, the thickness should be 4mm with a trowel / screed, brush, or roller.

*For advice on specific uses, please contact our helpful team.

Yes, you can use Renderoc ST05 as a reliable product that provides effective repairs to cracks and voids in concrete and masonry surfaces.

Renderoc ST05 should be mixed in a forced action mixer of adequate capacity. You can also use a suitable sized drum to mix with the aid of a Conbextra paddle and a slow-speed heavy duty drill. Ensure the correct amount of Renderoc ST05 liquid component is placed into the mixer, along with the full bag of Renderoc ST05 powder and mix for five minutes until fully homogeneous. Add more liquid component to achieve the desired consistency if necessary.

For a brush coating the recommended ratio is 5.0 litres liquid : 20 kg powder. For a fairing coat, the ratio is 4.0 liters liquid : 20 kg powder.

The initial setting time is 2 hours, with the final setting time of 4 hours. It will reach full compressive strength of 50 MPa after 28 days.

Ordinarily, Renderoc ST05 is formulated to minimise any shrinkage and cracking during curing, thanks to the specially selected aggregates and a shrinkage-compensated binder contained within the product. Working conditions such as exposure to extreme temperatures may impact this.

Under normal circumstances, priming is not required for Renderoc ST05. Porous substrates may require sealing with Nitobond AR.

In cold working conditions down to 5°C, both components should be kept at 15°C to 25°C the applied product should be protected from freezing for the first 24 hours. When temperatures are above 35°C, components should be kept in the shade.

It has a shelf life of 12 months when kept in the original, unopened packaging in a dry store.