Ardex P 51 Primer Concentrated Water Based Bonding Agent

In stock |

  • Multipurpose - Suitable for a wide range of applications
  • Easy to use, dilute as appropriate for the application
  • For floors, walls and ceilings, including dense and porous surfaces
  • Ideal for sealing and priming gypsum based plasters and screeds
  • Minimises air bubbles rising through levelling compounds and porous surfaces
  • Low odour and solvent free
  • Cost effective, up to 160m2 /5kg unit

Product Options:


ARDEX P 51 is a multi-purpose primer ideal for priming porous surfaces prior to the application of ARDEX water-based levelling and smoothing compounds.

A concentrated, blue, synthetic, water-based, solvent- free multi-purpose primer with a wide range of applications which, after drying, helps to inhibit the penetration of water from subsequently applied materials.

  • Multipurpose – seals and primes a wide range of applications
  • Blue pigment allows clear identification of primed areas
  • Convenient re-sealable tub
  • Provides up to 160m2 coverage per 5kg unit
  • Easy to use, dilute as appropriate for the application

Dilution Rates:

Smooth and non-porous substrates (E.g.  prefabricated concrete floors, dense cement screeds, improved calcium sulfate screeds, terrazzo etc)
1 part ARDEX P 51 with ½ part water.

Rough concrete sub-floors and ceilings
1 part ARDEX P 51 with 1 part water.

Power Float Concrete
1 part ARDEX P 51 with 2 parts water.

Porous or highly absorbent cement screeds
1 part ARDEX P 51 with 5 parts water.

Absorbent and smooth calcium sulfate screeds
1 part ARDEX P 51 with 3 parts water.

See datasheet for more substrates.

More Information

Brand Ardex
Area Internal
Colour Blue
Type Primers-Admixes

Technical Info

Delivery Costs:

Delivery fees are calculated based on the weight of your order and your delivery location. You can use the delivery fee calculator in your basket or on the checkout page to find the exact cost.

Delivery Area:

We currently only deliver to UK Mainland and the Highlands. We do not deliver to the Islands, Ireland, or Northern Ireland.

Next Working Day Delivery (Subject to Stock Availability):

Orders placed before 12:00 pm (noon) will be delivered the next working day, excluding weekends and holidays. This service starts from £6.50 (including VAT) and the final cost is based on the weight of your order and your delivery location. You can check the exact cost in your shopping cart or on the checkout page by entering your postcode.

Economy Service (2-3 Working Days):

This service is only available for orders over 50kg. There is no additional charge for this service.

Sample Orders:

All sample orders are shipped for free via Royal Mail Tracked 48 or 24 service. Delivery typically takes 1-3 working days.

Delivery Methods:

Non-sample orders under 50kg will be dispatched via DPD or APC Overnight. Non-sample orders over 50kg (quarter, half, and full pallets) will be dispatched via Palletways or Kandrmason.


Simply place your order online and choose the Click & Collect option at checkout.
We'll email you once your order is ready for pickup at your chosen store.
Collection hours: Monday - Friday: 8:30 am to 4:30 pm

For more information, please visit our Delivery Information page.

- Please inspect your order for any damages upon delivery and notify us immediately if you find any.

- We will replace any items that are damaged during transit.

- We accept returns within 30 days of delivery.

- Please note that customers are responsible for the cost of returning items.

- We will process returns and refunds promptly once the items are received at our warehouse.

Returning Trims
Schluter Trime
Returning trims - 35% restocking fees applied.
Returnign trim with replacement - 15% restocking fees applied
Customers are responsible to arrange returning the item.
If we arrange a return colleciton, a £35 return item collection feed will be applied.

Mapei-Profilpas Trims
A 20% restocking fee will be applied. (Item must be in re-sellable condition)
The customer is responsible for returning the item.

For more information, please visit our Return & Exchange page.


Product Questions