# Why do rough outdoor tiles still look dirty after cleaning? Canonical: https://www.puroterraco.pt/en/guides/rough-outdoor-tiles-trap-dirt/ Language: en By Puro Terraço3 min readPublished on 10 November 2026 ![Courtyard paved with large pale slabs, rattan outdoor furniture and planting along the edges](https://www.puroterraco.pt/_astro/patio-lajes-jardim.DlMAMcMX_Z5OWo.jpeg) Textured surface of outdoor paving, dry. On a texture like this, what looks like dirt is not always dirt, and the decision comes from comparing areas. In this guide If outdoor tiles still look dirty after washing, first establish what remains on the surface: detergent residue, localised dirt or a different kind of mark. The texture can make this harder to see. Identify the paving and assess a dry area before cleaning again with more product or greater pressure. Calling tiles “non-slip” does not identify their product reference or finish. Manufacturer information is still needed to select suitable care and interpret the result. ## Start by comparing three areas Look at a frequently used route, a section protected by furniture and somewhere that appears clean. Check whether the difference is in colour, sheen or texture. An overview shows the distribution of marks; a close-up shows where residue collects. Also record when the problem started. Have the tiles always looked this way? Did they change after building work or start showing more marks after a change of detergent? This sequence helps avoid treating a different problem as everyday dirt. The three areas to compare Three kinds of area to look at on your paving. The photographs show framing examples. Photograph all three with the surface dry and in the same light, so that the comparison means something. 1. **1 · Sheltered area**Under a pot or a piece of furniture that has never moved. It is the closest reference to the original condition. 2. **2 · Traffic area**Where people walk every day: wear of the finish and dirt that builds up. 3. **3 · Exposed area**Open to rain and direct sun, unprotected. It is the furthest from the reference. ## More detergent may not help For routine care of its ceramic floors, Revigrés recommends lukewarm water and small quantities of neutral detergent that can be removed completely. It also recommends testing post-construction cleaners and matching them to the residues present. [Revigrés cleaning and maintenance guidance](https://www.revigres.pt/perguntas-frequentes/limpeza-e-manutencao). This does not mean using one solution for every stain. It means that dosage and product removal are part of the method. If several products have already been used, keep their names and explain the sequence before trying another. Do not mix cleaning products. Applying something new over an unknown residue is not a controlled compatibility test. ## The origin changes the approach | Situation | First question to answer | | --- | --- | | A film appeared after washing | Which detergent and dose were used? | | Marks beside the dining area | Was grease, a drink or another product spilled? | | A haze appeared after building work | Which materials and products were used? | | Joints are darker than the tiles | Is the mark on the tile or in the jointing material? | | A persistent difference in sheen | Has the finish changed as well as becoming dirty? | A single patio may have more than one issue. Ask for them to be assessed separately: a general wash and removal of building residues do not necessarily have the same scope. ## Make the test useful for comparison Choose an inconspicuous but representative area. A smooth corner or a spare tile with a different finish does not reproduce the problem on the installed floor. Photograph the area before starting and assess the final result only when it is dry. Keep the test process identifiable: one compatible product, the intended dose and an appropriate tool. If you change everything at once, you lose track of what worked or what altered the paving. Avoid scraping with metal or using an abrasive to “smooth away” the dirt. Stop if the surface changes. Preserving the finish matters as much as removing the mark. ## Joints and nearby details matter too Even if the ceramic tile tolerates a product, check its compatibility with joints, skirting, trims and thresholds. Include these junctions in your photographs, particularly where natural stone sits beside the tiles. Our guide to [whether pressure washing can damage stone or tiles](https://www.puroterraco.pt/en/guides/can-pressure-washing-damage-stone-tiles/) explains why a decision cannot rest on the tile’s apparent strength alone. ## Frequently asked questions ### Should textured tiles look polished after cleaning? No. The aim is to clean while preserving the finish. A change in sheen or texture should not be confused with better cleaning. ### Do tiles sold as non-slip eliminate the risk of slipping? That description should not be treated as a guarantee in every condition. If there is a safety concern, the paving and its use need assessment. A photograph or article cannot certify performance. [Request an assessment of your outdoor tiles](https://www.puroterraco.pt/en/quote/), including the product reference, approximate area and cleaners already used. These details help define compatible [exterior surface cleaning (page in Portuguese)](https://www.puroterraco.pt/limpeza-pavimentos-exteriores/). Further reading - [clean rough outdoor tiles](https://www.puroterraco.pt/en/guides/rough-outdoor-tiles-trap-dirt/) - [pressure washing risks for stone and tiles](https://www.puroterraco.pt/en/guides/can-pressure-washing-damage-stone-tiles/) - [request a patio cleaning quote](https://www.puroterraco.pt/en/quote/) ## Tell us about your patio Send photographs, the locality and the approximate area. These details help us provide initial guidance before confirming any points that need an on-site check. [Send my photos on WhatsApp](https://wa.me/351934826260?text=Hello%20Puro%20Terra%C3%A7o%2C%20my%20outdoor%20tiles%20still%20look%20dirty%20after%20washing.%20I%20can%20send%20dry%20photographs%2C%20the%20product%20reference%20if%20known%2C%20details%20of%20cleaners%20already%20used%20and%20the%20locality.)[Request a quote](https://www.puroterraco.pt/en/quote/) [All guides](https://www.puroterraco.pt/en/guides/)