Ardex P 51 Primer


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  • Suitable For: priming and sealing various surfaces
  • Area of use: INT & EXT
  • Application Method: soft broom/brush
  • Volume: 5kg
  • Container Type: bottle
  • Type: primer
  • Colour: blue
  • Brand: Ardex
  • Manufactuer: Ardex
  • Box Size: 1

 

ARDEX P 51 is a concentrated, synthetic, water-based, solvent-free primer that offers a range of applications for enhancing adhesion and protecting surfaces. This blue primer is designed to prepare dry internal floors, walls, and ceilings, making them suitable for the application of cement-based materials such as levelling compounds, tile adhesives, and screeds. After application and drying, ARDEX P 51 effectively inhibits the penetration of water from these materials, ensuring better performance and durability. It serves as an efficient pore sealer on absorbent substrates, reducing the likelihood of air bubbles rising through smoothing and levelling compounds, which extends their flow life and workability. Additionally, ARDEX P 51 improves adhesion to dense and smooth concrete sub-floors and cement-based screeds, making it a versatile bonding agent. It can also be used to prime rigidly supported plywood sub-floors before tiling and acts as a temporary protective coating over cement-based compounds and repair mortars to safeguard them before the final flooring is installed.

Key Points:

  1. Versatile Primer: ARDEX P 51 is a multi-purpose, solvent-free primer suitable for a variety of surfaces, including dry internal floors, walls, and ceilings.
  2. Water Penetration Inhibition: It prevents water penetration from subsequently applied materials, improving the durability of the final finish.
  3. Pore Sealing: Acts as an effective pore sealer on absorbent sub-floors, reducing air bubbles and extending the workability of smoothing and levelling compounds.
  4. Enhanced Adhesion: Improves bonding to dense concrete sub-floors, cement-based screeds, and conditioned plywood, and can also be used as a temporary protective coating.

 

Storage and Shelf Life

ARDEX P 51 should be stored in its original, unopened packaging, elevated off the ground in a cool, dry environment. It must be protected from excessive draughts to maintain its quality. When stored under these conditions, ARDEX P 51 has a shelf life of 12 months from the date indicated on the packaging.

 

 

 

 

For more in our range of primers, please click here. For see more of our Ardex range, click here.

Alternatively, you can visit the Ardex website here.

 

 

ARDEX P 51 is suitable for priming and sealing various surfaces, including cement or gypsum plaster-based materials, cement-based or anhydrite screeds, and alpha hemihydrate pumped screeds, prior to the application of cement-based products. It also improves adhesion to dense concrete sub-floors and cement-based screeds, making it ideal for use before applying repair mortars or cement-based tile adhesives. Additionally, ARDEX P 51 can prime rigidly supported and conditioned plywood sub-floors before installing ceramic tiles with appropriate cement-based adhesives. It can also serve as a temporary protective coating over cement-based smoothing compounds and repair mortars, allowing for foot traffic before the final flooring is installed, and as a dust-proofing treatment on screeds.

 

Substrate Preparation

Substrates must be dry, firm, and free from dust, water-soluble materials, excess adhesive residues, and any other barriers to adhesion. Ensure that the surface is protected by a functioning damp-proof membrane (DPM). Remove any surface contamination such as polish, wax, grease, and curing agents using ARDEX DGR degreaser before undertaking mechanical preparation. ARDEX P 51 should not be used on metal, mastic asphalt, excess adhesive residues, ARDEX DPM, polyurethane, or epoxy coatings. For guidance on these surfaces, refer to the datasheets for ARDEX P 82 Water Dispersed Epoxy Primer and ARDEX R 3 E General Purpose Epoxy Primer.

Application

Shake the ARDEX P 51 container well before use. If dilution is required, pour the ARDEX P 51 into a clean container and mix with the specified amount of water according to the mixing ratio. Ensure that both the ambient temperature and the surface temperature are above 5°C. When applying ARDEX P 51 where moisture-sensitive materials will be used, confirm that the substrate is dry—screeds should have a relative humidity (RH) reading of no more than 75%, and, if directly on the ground, protected by an effective DPM. Apply the primer evenly using a soft broom or brush over the clean, dust-free surface. Allow the primer to dry thoroughly, forming a clear, thin blue film, before proceeding with any subsequent work.

 

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Elementlength
up to
1,5 m
up to
2,5 m
up to
3,5 m
up to
4,5 m
up to
2,5 m
up to
3,5 m
up to
4,5 m
Type of window frame material Minimum witdth of joints
for a butled mounting b in mm
Minimum witdth of joints
for a inner mounting b in mm
Hard PVC (white) 10 15 20 25 10 10 15
Hard PVC and PMMA (dark)
(colour extruded)
15 20 25 30 10 15 20
Hard PUR integral foam 10 10 15 20 10 10 15
Wood-aluminium-window 10 10 15 20 10 10 15
Aluminium-plastic sandwich
frame (bright)
10 10 15 20 10 10 15
Aluminium-plastic sandwich
frame (dark)
10 15 20 25 10 10 15
Wooden window frame 10 10 10 10 10 10 10

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