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Bostik Cempolay Universal Primer – Bulk Buy

Bostik Adhesives and Levellers - Terrific Pallet Deals and Bulk Buy

Cempolay Universal Primer

Versatile primer for use with all Cempolay smoothing compounds

Bostik Cempolay Universal Primer is a water-based, solvent-free acrylic dispersion floor primer and bonding agent that’s suitable for use prior to the application of any Bostik levelling compound.

When applied undiluted, it acts as a bonding agent on non-porous surfaces such as power floated concrete, ceramic tiles, quarry tiles, rigid metal, terrazzo, asphalt and surface membranes.

In diluted form, it can be used as a primer on porous surfaces and will dry within one hour depending on the conditions.

  • Ready mixed and easy to use
  • A bonding agent for non-porous surfaces when applied undiluted
  • A primer for porous surfaces when applied diluted
  • Suitable for use with most common substrates

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

£23.99 +VAT

£23.99 +VAT

Bostik Cempolay Universal Primer further information


Undiluted as a bonding agent: 37.5 to 50m2 per 2.5L unit

Diluted as a primer: 60 to 75m2 per 2.5L unit

Bostik Cempolay Universal Primer is a water based solvent free, acrylic dispersion primer. Use as a primer/bonding agent prior to the application of any of the Cempolay range of smoothing compounds. In undiluted form it can be used on all smooth and dense surfaces, power floated concrete, ceramic tile, quarry tile, rigid metal, terrazzo, asphalt and surface membranes. In diluted form (1 : 2 with clean water) it can be used on porous substrates, including sand/cement and wooden boards etc.

Bostik Cempolay Universal Primer product characteristics

ColourPale blue
CompositionPolymer mix
Specific Gravity1.0 approx
Product Code30607656 2.5L
Storage / Shelf LifeStore for up to 12 months from date of manufacture when stored in original, unopened packaging under cool, dry conditions within the temperature range of 5°C to 40°C and out of direct sunlight. Protect from frost

Bostik Cempolay Universal Primer typical performance data

CoverageUndiluted as a bonding agent: 37.5 to 50m2 per 2.5L unit

Diluted as a primer: 60 to 75m2 per 2.5L unit
Application Termperature5°C to 40°C
Service TemperatureUp to 40°C
Drying TimesApproximately 1hour under good drying conditions.

Longer in damp conditions. Shorter with good ventilation, low ambient humidity and moderate heat.


IMPORTANT: Before using Bostik Cempolay Universal Primer refer to the relevant Health and Safety Data Sheet, available at www.bostik.com/uk

All phases of installation should comply with the latest editions of:

BS 8102 Code of Practice for protection of buildings against water from the ground.
BS 5325 Code of Practice for installation of textile floor coverings.

BS 8203 Code of Practice for installation of resilient floor coverings.
BS 8201 Code of Practice for flooring of timber, timber products and wood based panel products.



  1. Ensure the subfloor is clean, sound, dry and free from contaminants that may hinder adhesion.
  2. Bostik Cempolay Universal Primer can be used over traces of old adhesive residues providing that they are well bonded and non-moisture soluble. However, it is not suitable for use over tackifier, bituminous or water- soluble adhesives which should be completely removed.
  3. The subfloor should be tested in accordance with British Standards, using a properly calibrated and insulated hygrometer.
  4. A reading of 75% RH or less confirms that the subfloor is satisfactorily dry. Where this has not been attained, it is necessary to apply a Cempolay surface membrane to suppress residual moisture. For further information contact Flooring Technical Services.


Smooth Dense Surfaces:
5. Apply using a brush or roller, ensuring that a thin even coat is obtained.

Porous Surfaces:

  1. Apply the diluted Cempolay Universal Primer by brush or roller, ensuring that it is well worked into the surface.
  2. On porous surfaces or any surfaces likely to produce air holes in a smoothing compound, a second application will be required.


  1. Bostik Cempolay Universal Primer will dry within one hour under good drying conditions. However, under cold damp conditions this will be extended.
  2. Conversely, drying times can be reduced with good ventilation, low ambient humidity and moderate heat.
  3. Avoid using heaters that produce water vapour, such as fuel burning space heaters, as these will slow the drying rate.
  4. Bostik Cempolay smoothing compounds can be applied as soon as the primed surface is dry.

Bostik Cempolay Universal Primer CLEANING

12. Clean tools and equipment immediately after use with water or white spirit if the material has dried.


For any application not covered please contact Technical Services on +44 (0) 1785 272625 or visit www.bostik.com/uk for advice.

Recommendations and suggestions are for guidance only, since conditions of use are completely beyond our control.


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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

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2 months ago

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4 months ago

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4 months ago

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4 months ago

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

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5 months ago

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3 years ago

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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

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3 years ago

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

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3 years ago

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