Plain grey concrete: refresh it with colour or replace it with a decorative slab?

What can a coating do for plain concrete?

A coating can give plain concrete an even, deliberate colour and a cleaner face. Grey slabs around villas tend to look tired because of patchy staining, tyre marks, old repairs in slightly different shades and organic growth in shaded corners. Once washed, repaired and coated with a tinted acrylic resin in two coats, they look uniform and cared for.

What a coating does not do is add a pattern. A plain slab remains plain, with its existing texture, joints and levels. Owners who want the look of cobbles, slate or stone on a surface that is currently smooth grey concrete should know from the start that colour alone will not create that effect.

For many practical areas, plain is exactly what is wanted. Garage floors, utility yards, the strip beside the bins, parking bays and the space around a pool pump room all benefit more from a clean, even colour that is easy to keep tidy than from a decorative texture that collects dirt in its recesses.

When does new stamped concrete make more sense?

New stamped concrete makes more sense when the owner wants a genuinely decorative surface, when the existing slab is broken or sinking, or when levels and falls have to change. In all three cases the old concrete is either removed or significantly built over, which turns a surface job into a building job.

• You want a pattern, not just a new colour.
• The slab is cracked into separate pieces or has sections that have dropped.
• Water stands on the surface because the falls are wrong.
• You need to raise or lower the surface to meet a new gate, threshold or ramp.
• Roots or past trenching have left the slab uneven.

That work involves demolition, waste removal and base preparation, and we carry it out as well: besides restoring existing surfaces, we pour new stamped concrete. If you are weighing up a change of material entirely, such as block paving, our pillar site's page on paving replacement explains what replacing a surface involves.

How is plain concrete prepared for a coating?

Plain concrete is prepared in the same order as stamped concrete, with some differences in emphasis. Because it is smooth, every stain, crack and old patch is visible, so cleaning and repair have to be particularly thorough. Joints cut into the slab and the edges along walls and kerbs need careful masking.

1. Pressure wash the whole slab and the edges.
2. Assess oil and tyre marks that remain and treat them where possible.
3. Clean out and fill cracks and holes with acrylic filler or mortar.
4. Let the surface dry properly, paying attention to shaded areas.
5. Mask walls, kerbs, thresholds and drain grilles.
6. Apply tinted acrylic resin in two coats, then the optional protective coat.

The garage pair in our photo set is stamped rather than plain concrete, but it shows well how a coating unifies a worn, marked floor: an apron and garage floor that were cleaned but still worn and marked in the before shot, and the same garage, recognisable by its wall decoration, coated dark grey inside and out in the after shot. Our surface preparation guide explains each step in depth.

Which option is less disruptive for the household?

A coating is far less disruptive. There is no breaking out, no skip, no rubble and no new base, so noise is limited mainly to pressure washing. The area still has to be cleared and kept out of use while it is prepared and coated, but there is no building phase to plan around.

For owners who live abroad, let the property or have family visiting, that difference often decides the matter. A new slab means planning access for machines and concrete deliveries, agreeing where waste will go and accepting that the area will be out of use for longer. Construction and demolition waste is regulated by Royal Decree 105/2008 and Law 7/2022, and its removal has to be organised properly.

Replacement can also involve town hall procedures. Under Law 7/2021 (LISTA), minor works that do not need a project fall under a responsible declaration, and each town hall's ordinance decides the exact procedure. For a given job in Marbella, Mijas, Estepona or elsewhere, the owner should check the current municipal ordinance or ask the planning department before work starts.

How do the two options compare on cost?

They compare very differently because they involve different amounts of work. A coating pays for washing, repair, masking and coats on the existing slab. A new decorative slab pays for demolition or preparation, base work, concrete, stamping, finishing and waste. The condition of the slab, access, slope and size affect both.

We do not publish figures here. Our pricing site sets out restoration cost with an example quote, and its cost factors page explains why access, slope and condition change the total. A new decorative slab, which we also lay, is quoted individually, with the demolition and waste stages included.

How do I choose for my own property?

Choose by asking what you want the surface to do. If the aim is a clean, even, practical floor for cars, bins, pool equipment or storage, and the slab is sound, a coating is usually the sensible answer. If the aim is a decorative look, or the slab has failed, a new surface is the more honest route.

For the coating route, see concrete painting and renewal and, for driveways with garages and carports, driveway restoration. If you are still deciding between colour and a decorative new surface, our article on resin, paint or a new pour for stamped concrete looks at the same choice from the other side. When you are ready, send us a photo and the approximate m² – free, no-obligation quote.

A mixed approach is also possible: coat the practical areas such as the garage and utility yard in a plain colour, and keep the decorative treatment for the front approach or terrace where appearance matters most. Matching the colour of both areas ties the property together even when the textures differ.

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