Outdoor microcement
Seamless, UV-stable floors for patios, terraces, balconies, paths and pool surrounds, with no grout lines for weeds or dirt. ErreLAB’s outdoor systems hold their colour in the sun and can run straight on from your indoor floor.
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What outdoor microcement is
Outdoor microcement is a thin, hand-trowelled resin laid as one continuous surface, so there are no grout lines for dirt or weeds to settle in. Politura and ErreFast are made for interiors only, so outside we use ErreLAB’s two outdoor systems.
Both are fully UV stable and weather resistant. Both also share their colours with the indoor versions, so a floor can run from the kitchen straight out onto the terrace.
At a glance
- Systems
- Spatolato Outdoor, Pietra Continua Outdoor
- Use
- Patios, balconies, terraces, paths and pool surrounds
- Sun
- Fully UV stable
- Joints
- None
- Installation
- Professional installation recommended
Why choose microcement outside
Our pick for outside: ErreLAB Outdoor
Outside, we recommend ErreLAB’s two outdoor systems. Choose Spatolato Outdoor for a smooth trowelled finish made to mimic traditional microcement, or Pietra Continua Outdoor for natural stone effects.
Both are water-based polyurethane resins, fully UV stable and weather resistant, and they share their colours with the indoor versions, so the same colour can run from the kitchen to the terrace. They can also be used indoors, in rooms with lots of big windows, where the extra UV resistance helps the colour stay true.
At a glance
- Type
- Water-based polyurethane resin
- Systems
- Spatolato Outdoor, Pietra Continua Outdoor
- Sun
- Fully UV stable
- Colours
- Same charts as the indoor versions
- Installation
- Professional installation recommended

Which outdoor system
Both are water-based polyurethane resins, fully UV stable and made for outside. The difference is the look.
Water-based polyurethane
Spatolato Outdoor
- Look
- Smooth trowelled finish, the same look as indoor Spatolato
- Sealer
- Gloss, satin or matt
- Colours
- Same charts as Spatolato; a few aren’t available outdoors
- Best for
- Modern terraces, balconies and pool surrounds
Water-based polyurethane
Pietra Continua Outdoor
- Look
- Natural stone in four finishes: Basalto, Calcare, Quarzite or Travertino
- Sealer
- Protective satin
- Colours
- Same colours as Pietra Continua
- Best for
- Patios, paths and steps where you want a stone look
Outdoor projects
6 photos
Terraces, balconies, steps and paths in Spatolato Outdoor and Pietra Continua Outdoor.
Questions about outdoor microcement
Can Politura or ErreFast go outside?
No. Both are for interiors only. Outside, use Spatolato Outdoor or Pietra Continua Outdoor.
Can I use the outdoor versions indoors?
Yes. In a room with big windows and lots of sun, their extra UV resistance helps the colour stay true.
What can it go over?
Sound concrete, screed and existing stone or tiles, once they’re prepared. Call us on 01472 240 340 to talk through the build-up for your surface.
How do I look after it?
Sweep and wash it like a tiled terrace. Each system has its own cleaning and maintenance sheet in its Downloads.
Can I apply it myself?
It’s best applied by a trained installer. If you want to learn, see our training courses.
See it outside
More guides

Floors
What to know about microcement floors, from substrates to sealers.
Read the floors guide →
Walls
Feature walls, kitchens and living spaces, and how to prepare the background.
Read the walls guide →
Bathrooms and wet rooms
Which systems work in showers, wet rooms and on vanity tops.
Read the bathrooms guide →
Commercial spaces
Slip, fire and hygiene data for shops, hotels, restaurants and clinics.
Read the commercial guide →
Over tiles
Cover tiled walls and floors without ripping them out, and the preparation that makes it last.
Read the over tiles guide →
Microcement vs tiles
Seamless or grouted: how they compare, and how microcement can go straight over old tiles.
Read the guide →
Applying microcement
Who it suits, which system is easiest to learn, and how to get good at it.
Read the guide →
Questions answered
Underfloor heating, cracks, tiles, slip resistance, samples and more.
Read the FAQs →
Microcement vs polished concrete
A similar seamless concrete style, without pouring a new slab.
Read the guide →Make your outdoor space seamless
We’ll help you choose a system and colour, send samples and talk you through the build-up for your terrace, path or pool.


