Stamped concrete in Mallorca

Stamped concrete, also called imprinted or pattern imprinted concrete, is a concrete slab that is coloured on the surface while still fresh, pressed with polyurethane moulds that reproduce stone, slate, cobbles or timber, and protected with a sealer. The result is a continuous surface with no loose pieces and no mortar joints, with the strength of a slab and the look of the material it imitates.

Where it is used in Mallorca

On the island, stamped concrete turns up mainly in four places. On terraces and pool surrounds, because there are no joints for chlorinated water to get into and no pieces that lift in the heat. On driveways and parking areas of villas and residential communities, because it takes the weight of a vehicle without sinking the way badly bedded pavers do. On finca tracks and paths, where it replaces gravel that washes away with every storm. And in gardens, courtyards and porches, as a walkway that sits well with marés stone and Mediterranean planting.

What goes into stamped concrete

A well built stamped surface has five layers, and each one is there for a reason.

1. The sub-base. Compacted crushed aggregate, normally 10 to 20 cm, on firm ground with no topsoil. This is the layer that stops the concrete settling and cracking. On the clay soils of the interior or on recent fill it needs more depth or a geotextile.
2. The concrete. A slab of 8 to 10 cm for foot traffic and 12 to 15 cm where vehicles pass, with welded steel mesh or polypropylene fibres to spread the stresses.
3. The colour hardener. A powder of cement, fine aggregate and pigment that is broadcast over the fresh concrete and trowelled in. It gives the base colour and hardens the surface.
4. The release agent. A second, darker powder that stops the mould sticking and leaves the shading in the joints and relief. It is partly washed off the next day, and what remains gives the pattern its depth.
5. The sealer. An acrylic sealer, solvent or water-based, in two coats. It closes the pores, fixes the colour, repels water and dirt and gives the matt, satin or gloss finish.

Finishes, colours and moulds

The moulds most often requested in Mallorca are random stone, slate, cobble, timber plank and fan, plus large slabs for more contemporary terraces. In colours, sands and beiges dominate, because they sit well with marés stone and white facades, followed by terracottas, greys and slates. The base colour, the release agent and the sealer finish combine, and the same texture changes a great deal depending on that combination. We bring samples to the visit.

There is also smooth or fine textured stamped concrete, which is trowelled and coloured but barely imprinted. It looks more restrained, but it is more slippery when wet and we do not recommend it on pool copings.

Sub-base and thickness

The question of how thick stamped concrete needs to be has a short answer and a long one. The short one: 8 to 10 cm for people, 12 to 15 cm for cars. The long one: thickness is of little use if the sub-base is not compacted, if the concrete has no reinforcement or if the expansion joints are not cut in time. Most of the cracked stamped concrete we restore has the right thickness and an inadequate sub-base.

That is why our quotes separate the sub-base from the concrete. A price per square metre that does not say how many centimetres of aggregate it includes, or whether it is compacted with a roller or a plate, cannot be compared with another.

Curing: when you can walk on it

Concrete sets in hours but cures in weeks. It can be walked on with care after 24 hours; the joints are cut between 24 and 48 hours; the sealer goes on once the concrete has lost its moisture, normally between 7 and 28 days depending on the season; vehicles wait at least 7 days and preferably until after sealing. In summer we water or cover the surface for the first few days so that it does not dry too fast, because rapid drying under the Mallorcan sun produces fine shrinkage cracks.

Sealing and maintenance

The sealer is what separates stamped concrete that ages well from stamped concrete that turns white and porous after three years. Two thin coats protect better than one thick one, and applying it over damp concrete is the usual cause of white patches. In pool areas and on ramps we add an anti-slip aggregate to the second coat.

Maintenance is simple: sweep or blow off leaves and pine needles, hose down with water and a neutral detergent, avoid acids such as hydrochloric acid, and do not use a pressure washer close to the sealer. And renew the sealer every 2 to 4 years, before it disappears altogether. That renewal is part of our work and we raise it at the first visit; once the floor has already lost its colour, we are talking about restoration.

Stamped concrete, polished concrete or tiles

Compared with polished concrete, stamped concrete is slip resistant through its relief, hides dirt better and comes in more colours; polished concrete is smoother and cleaner looking but slippery when wet, so it is kept for interiors and covered areas. Compared with exterior tiles, stamped concrete has no joints to get dirty and no pieces to lift, it follows curves and level changes and, on medium and large areas, usually costs less per square metre. Tiles win when you want to be able to replace individual pieces or when format and texture matter more than continuity.

What moves the price

The price per square metre of stamped concrete depends on the total area, the state of the ground and the sub-base it needs, access for the mixer lorry, thickness and reinforcement, the mould and colour chosen, edges and joints, and the sealer. For a specific figure, ask for a quote with photos and measurements and we itemise each part.