Repaint a previously painted swimming pool

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Guide to repainting a previously painted swimming pool

A previously painted swimming pool needs extra attention to adhesion because the new coating is only as reliable as the old layer left underneath. The specified Mipa RC 255-30 products are for a careful chlorinated rubber coating job on a clean, sound and compatible substrate.

What do you need to repaint a previously painted pool?

Surface sanding and local correction

MP Sanding Sponge helps dull sound old coating, smooth small rough areas and prepare edges on the previously painted swimming pool before repainting. Use it only after loose or failing material has been removed.

Mipa RC 255-30 chlorinated rubber coating

Mipa RC 255-30 is the coating stage for brush and roller work on suitable pool, pond and basin surfaces. It is used where a chlorinated rubber finish is the correct coating type for the existing surface and service conditions.

Colour price groups I, II and III

The specified 5 kg RC 255-30 options cover the available Mipa price groups for different colour choices. Choose the colour group that matches the required finish and project specification.

Controlled brush and roller application

The thixotropic character supports hand application on larger shaped surfaces, curves and edges. Apply thin, even films according to the Mipa technical data rather than trying to build a heavy coat at once.

How to repaint a previously painted swimming pool

  1. 1
    Confirm that the surface is suitable

    Check that the previously painted swimming pool is sound, dry and compatible with a chlorinated rubber coating. Remove algae, loose paint, chalking, grease and mineral deposits before coating work starts.

  2. 2
    Prepare the surface evenly

    Sand or abrade glossy and repaired areas so the coating can grip. On a previously painted previously painted swimming pool, unstable old coating must be removed back to a firm edge.

  3. 3
    Follow the RC 255-30 coating information

    Use Mipa RC 255-30 according to the official technical information, including the specified thinner method and film build guidance. For swimming pool use, follow the Mipa Pool Ruc structure guidance as referenced by Mipa.

  4. 4
    Apply by brush or roller

    Work in controlled sections and avoid heavy build. A thin and even chlorinated rubber film is safer than trying to cover all imperfections with one thick pass.

  5. 5
    Let the coating dry and cure correctly

    Keep the previously painted swimming pool protected from water, contamination and early service until the coating system has dried and cured as required by the technical information.

Which repainting approach should you use?

For a new coating job

Use RC 255-30 only when the concrete, plaster or mineral surface has been prepared into a clean, stable and dry coating base.

For a repainting job

Use RC 255-30 over a compatible old coating only after cleaning, sanding and removing all loose or chalky areas.

For colour choice

Select price group I, II or III according to the required Mipa colour group rather than treating the price group as a performance difference.

Technical details

  • Mipa RC 255-30 is listed by Mipa as a chlorinated rubber topcoat for swimming pools, paddling pools, garden ponds, chemical protection and corrosion protection.
  • Mipa lists Mipa UN Thinner and Mipa UN 21 as thinner routes for RC 255-30.
  • Mipa states that pool use must observe the coating structure in the Mipa Pool Ruc technical information.
  • Pool and pond coatings should be applied only to sound, clean and dry surfaces, with water kept away until the coating has cured sufficiently.
Practical suggestion

Before repainting, identify loose, blistered or chalky paint and remove it fully. Sound old coating can be sanded and cleaned, but weak paint should not be buried under a fresh coat.

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