Product Details
ARDEX P 51 MIX
Primer and Bonding Agent
- Reliable primer with a wide range of applications
- Primer, bonding agent and pore filler with water-repellent effect
- Prevents air bubbles from rising from the substrate during filling
- Solvent-free

ARDEX P 51 MIX: Versatile Primer for Absorbent Surfaces
ARDEX P 51 MIX is a solvent-free primer for absorbent surfaces, ideal for use on floors, walls, and ceilings. It acts as a primer, dust binder, moisture regulator, and pore sealer, significantly reducing water absorbency. Suitable for old and new cement and gypsum screeds, concrete, tiles, and more. Applied before ceramic adhesive, cement or gypsum plaster, and self-leveling screeds. For indoor use only, available in 10 kg and 25 kg canisters.
Description
Solvent-free synthetic resin dispersion which, after drying, significantly inhibits the penetration of water.
Use
Indoor use. Floors, walls and ceilings.
Priming, pre-coating, bonding agent and pore sealer with water-repellent effect.
For bonding powdery substrate surfaces, e.g. on sanded, absorbent calcium sulphate and calcium sulphate selflevelling screeds, for priming cement screeds, for accepting filling, levelling and smoothing compounds.
As a bonding agent on smooth concrete floors, particularly compacted cement screeds, modified calcium sulphate screeds, Terrazzo, sandstone, tiles and slab coverings when using levelling compounds and thin-bed mortars.
As a bonding agent on old substrates with adhering levelling compound and adhesive residues.
As a pore sealer on concrete floors and cement screeds
prevents air bubbles from rising from the substrate during subsequent filling applications
prevents mixing water from being knocked away during subsequent filling.
For priming gypsum, calcium sulphate and chipboard for thinbed concrete mortar.
As a bonding agent on smooth concrete for gypsum-based wall fillers.
Protective coating for dust binding on fillers and levelling compounds that are used as work surfaces for a short time.
Considerations
When applying to old substrates, ensure that the levelling compound and adhesive residues are waterproof, sufficiently load-bearing for future loads and adhere well to the substrate. Allow the primer film to dry overnight. Water-soluble levelling compound and adhesive residues (e.g. containing sulphite lye) must be completely removed.
For adhesive residues based on polyurethane, epoxy resin and bitumen, use ARDEX P 82 Synthetic Resin Primer as a bonding agent.
Coatings to be applied on existing ceramic, terrazzo, natural stone, PVC, etc. must be fully bonded to the substrate and must not be detached in any way. Before priming, the surface should be thoroughly cleaned with appropriate products (preferably Lithofin).
In case of doubt, carry out a test application.
Packaging
10 kg or 25 kg plastic can
Shelf Life and Storage
Can be stored frost-free for approx. 12 months in the original sealed container. ng in a frost-protected environment.
Material requirement
200 g/m²
GHS/CLP classification
none
GGVSEV/ADR classification
none
IMPORTANT NOTE
This Frequently Asked Questions (FAQ) section is prepared for general information purposes and does not constitute a definitive guide. For the most accurate and up-to-date information please refer to the product technical data sheets. For detailed information about product features, usage conditions, and application methods, we recommend consulting the ARDEX Turkey technical team. Before any application, obtaining expert advice on surface preparation and product selection will increase the success of the application.
How do I prepare a surface for self-leveling screeds?
To prepare a surface for self-leveling screeds, use ARDEX P 51 MIX as a primer. It seals pores, reduces water absorption, and prevents air bubbles from forming, ensuring a smooth and even application.
Can ARDEX P 51 MIX be used on old concrete surfaces?
Yes, ARDEX P 51 MIX is suitable for use on both old and new concrete surfaces. It acts as a primer, dust binder, moisture regulator, and pore sealer, enhancing adhesion for subsequent layers.
Is ARDEX P 51 MIX suitable for indoor use only?
Yes, ARDEX P 51 MIX is designed for indoor use on floors, walls, and ceilings. It is not recommended for outdoor applications.
What are the benefits of using ARDEX P 51 MIX before plastering?
Using ARDEX P 51 MIX before plastering helps to reduce water absorption, prevent air bubbles, and improve adhesion. It also balances moisture and binds dust, providing a stable base for plaster applications.
Can ARDEX P 51 MIX be applied to gypsum surfaces?
Yes, ARDEX P 51 MIX can be applied to gypsum surfaces. It seals pores and reduces water absorption, making it ideal for use before applying thin mortar or ceramic adhesive.
How much ARDEX P 51 MIX do I need for a single coat?
For a single coat to bind dust and balance moisture, you will need approximately 200 g per m² of ARDEX P 51 MIX.
What is the shelf life of ARDEX P 51 MIX?
ARDEX P 51 MIX has a shelf life of approximately 12 months when stored in its original unopened packaging in a frost-protected environment.
Is ARDEX P 51 MIX solvent-free?
Yes, ARDEX P 51 MIX is a solvent-free product, making it safe and environmentally friendly for indoor use.
Can ARDEX P 51 MIX be used on tile surfaces?
Yes, ARDEX P 51 MIX can be used on tile surfaces. It enhances adhesion and prepares the surface for further applications like plastering or applying self-leveling screeds.
What packaging sizes are available for ARDEX P 51 MIX?
ARDEX P 51 MIX is available in 10 kg and 25 kg canisters, suitable for various project sizes.
Do you have any questions about this product?
You can ask your questions about this product by filling out our contact form.

