Sikagard®-552 W Aquaprimer

• CE marking and declaration of performance based on EN 1504-2 Products and systems for the protection and repair of concrete structures — Surface protection systems for concrete — Coating. 

Acrylate dispersion

24 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

~1.0 kg/l (at 20 °C)

20 %

1 Coat of Sikagard®-552 W Aquaprimer

Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming.

No rising moisture (ASTM D4263, polyethylene sheet)

PRIMER FOR COATING PRODUCTS

Waiting time before applying a waterborne coating:

When the application is over an existing coating, waiting time to overcoating is doubled.

PRIMER FOR CEMENT BASED RESURFACING PRODUCTS

When used as primer under resurfacing mortar apply the mortar while the primer is tacky. If the Product has dried out completely, re-apply 1 coat.

0.10–0.12 kg/m² (8–10 m² per litre) dependent on the absorbency of the substrate.

Strictly follow installation procedures

Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions, which must always be adjusted to the actual site conditions.

EXPOSED CONCRETE WITHOUT EXISTING COATING

Preconditions

New concrete shall be least 28 days old.

The substrate is to be clean, dry and free of all contaminants such as dirt, oil, grease, surface treatments and loose friable material which can reduce the adhesion of the coating.

1. Prepare the substrate mechanically using suitable equipment such as abrasive blast cleaning or high pressure water jetting to achieve a textured surface profile suitable for the Product thickness and required coating adhesion values.
2. Fill all surface defects, blowholes, cavities and pores using a pore filler (such as Sika MonoTop®-3020, Sikagard®-720 EpoCem® or Sikagard®-545 W Elastofill) to provide a defect free surface.
3. For a cementitous pore filler, allow a curing time of at least 4 days before coating. If Sikagard®-545 W Elastofill or Sikagard®-720 EpoCem® is used, then coating can be applied within 24 hours.

EXPOSED CONCRETE WITH EXISTING COATING

1. Test existing coatings to confirm their adhesion to the substrate and their compatibility.

As guidance, in the absence of any national standards or regulations, adhesion test average shall be ≥ 0.8 N/mm², with no single value below 0.5 N/mm².

INADEQUATE ADHESION

1. Completely remove existing coatings using suitable equipment and prepare the substrate as described in 'Exposed concrete without existing coating'.

ADEQUATE ADHESION

1. Thoroughly clean the existing fully bonded coating surfaces of all contaminants using suitable equipment such as steam cleaning or high pressure water jetting.
2. For a waterborne existing coating, use Sikagard®-552 W Aquaprimer as a primer.
3. For a solvent-based existing coating, use Sikagard®-551 S Elastic Primer as a primer.
4. If coating type is unknown, carry out compatibility and adhesion testing to determine which primer is most suitable.

IMPORTANT - Wait at least 2 weeks before conducting the adhesion test. The adhesion test average must be ≥ 0.8 N/mm², with no single value below 0.5 N/mm²

For more information refer to the Application of Sikagard® Protective Coatings.

1. Shake the Product for 30 seconds prior to application.
2. Apply the Product to the substrate using a brush, roller or airless spray equipment.

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.