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Tilemaster Flexmaster 1L/5L- Multi Purpose Flexible Additive & Primer (Buy The Unit)


Tilemaster Flexmaster is

A highly advanced acrylic based polymer which can be used as a flexible additive and/or a primer. As a flexible additive, Flexmaster increases the flexibility, durability, adhesion properties and water resistance of Tilemaster tile adhesives and grouts. It is sold undiluted and as a result can be adapted/diluted to meet site requirements.

As a primer, Flexmaster is designed to prime, stabilise and seal substrates prior to the application of Tilemaster tile adhesives and self levelling compounds. It increases the adhesion and prolongs the working time of tile adhesives and self levelling compounds. It can be used on both absorbent and non-absorbent surfaces, internally and externally.

You can add this product to your order, however there must be a pallet/half/three-quarter-pallet in the cart to checkout.

Need a custom deal? 0333 344 2655 or info@buythepallet.co.uk

£8.80£31.10 +VAT

£8.80 £9.92 +VAT
£31.10 +VAT

Tilemaster Flexmaster further information:


  • As a Flexible Additive –
  • Increases the flexibility and adhesion of adhesives and grouts
  • Improves the durability and water repellence of adhesives and grouts
  • Can be added to any adhesive or grout within the Tilemaster range


  • As a Primer –
  • Wall & floor primer for absorbent & non-absorbent surfaces
  • Designed to prime, stabilise & seal substrates
  • Increases the adhesion of tile adhesives & levellers
  • Prolongs the working time of tile adhesives & levellers
  • Water based


Surfaces must be sound and free from dust, dirt, grease, oil and any other contaminants. Any laitance or surface treatments must be removed before use. Concrete, sand/cement screeds, anhydrite screeds and power floated concrete must be fully cured and dust removed ideally by vacuum. The temperature of the surface must be above 5°C when the Tilemaster Flexmaster is applied. Underfloor heating must be switched off 2 days before application. Timber and over boarded substrates must be rigidly braced and sufficiently constructed to take domestic loading without movement.


Flexmaster can be added to the full range of Tilemaster adhesives and grouts to increase flexibility, durability, adhesion properties and water resistance of cement based products. Flexmaster must be diluted with water prior to mixing with the cement based product. Flexmaster should be diluted accordingly to meet site requirements, a guide is as follows:

1 part Flexmaster to 3 parts water: When added to Grout 3000, Trade FlexiRapid, Rapid Setaflex and Standard Set Setaflex – this dilution rate significantly improves the flexural properties of the product.

1 part Flexmaster to 3 parts water: When added to Tilemaster Rapid Set, Rapid and Standard Extrabond, Wall Grout and Wide Joint Grout – this dilution rate makes the product suitable for use on substrates subject to limited movement and/or vibration such as plywood overlay, timber framework and underfloor heating systems.

1 part Flexmaster to 2 parts water: When added to tile adhesives and grouts that are already classed as flexible products, this dilution rate makes the product suitable for use directly onto substrates with significant movement and/or vibration such as floorboards and floating floors.

When added to Grout 3000 at this dilution rate, Grout 3000 becomes as flexible as TilemasterUltimate S2 adhesive.


Shake well before use. Flexmaster should be diluted accordingly for the relevant substrate, see page 3. Apply Tilemaster  Flexmaster evenly to the whole surface to be treated with a paint roller, brush or sponge. Do not over apply as this can cause the primer to skin over, only a thin coat is required ensuring that you have 100% coverage. Wash tools after use with warm water.

The drying time of Flexmaster will depend on the porosity of the substrate and the ambient conditions/temperatures. In ideal conditions, Tilemaster Flexmaster will take 30 – 45 minutes to dry. Once primed, avoid trafficking the primed area.

View other products by Tilemaster Adhesives here.



Coverage as a Flexible additive: 5 litres of Flexmaster mixed with 3 parts water produces enough flexible additive for 80kg of tile adhesive Coverage as a Primer: 1 litre applied neat will cover 10m². Diluted with 3 parts water, 1 litre will cover 40m².


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5.0Out of 5 stars

Overall rating out of 16 Google reviews

Phil Down
3 hours ago

They actually answered the phone, were polite, knowledgeable and the order was delivered in full and on time. Would fully recommend both on price and service. Thank you.

3 weeks ago

BTP very helpful in supplying a pallet of floor leveller. I needed it on the Saturday, but didn’t want it sitting on the driveway for several days. I called and they recommended ordering for Thursday to give a day’s grace in case of any delivery issues. In the event the pallet arrived on Thursday as requested. Reliable and good value

Gary Harper
2 months ago

Great service, great price and great communications. We will definitely use Buy The Pallet again

Adrian W
4 months ago

Great service and delivery! Ordered all that I needed in one go and it was delivered to the back door wrapped and protected from the snow! Pallet even made it so that the goods were dry off the ground.

Stephen Tucker
4 months ago

Great customer service and at an unbeatable price. All delivered on the day I needed it.

Boon Teo
4 months ago

Great prices with a good ranges of products . Customer Service is excellent!

Max Simpson
5 months ago

Very helpful!

Neil Salih
3 years ago

Peter Bostock
3 years ago

I purchased a pallet of these and I am very impressed from ordering to receiving my pallet and the delivery guys were very helpful as well .I will definitely recommend and use this company again .Highly recommend

Kev in
3 years ago

Amazing knowledge and great prices! Definitely using these guys on a regular basis for my pallet deals on levellers and adhesive

Rob Faulkner
3 years ago

Fantastic experience with Buy The Pallet. Everything I needed to complete a large flooring project, quick delivery & quality products.

Richard Fairlie
3 years ago

Great service and really good pricing! Super fast delivery and really lovely guy!

Marc. T
3 years ago

Very helpful