Wet leaves, moss and green algae can turn garden steps into one of the most dangerous spots on a property once autumn and winter take hold across Devon, Cornwall, Somerset and Dorset. Whether your steps use Resin Bound surfacing, Decking boards or natural stone, there is usually a practical fix, and if you want a permanent solution our Steps installations are designed with grip and drainage built in from the start.
This guide explains why garden steps become slippery, quick checks you can do now to get ready for autumn and winter, how to fix the problem depending on your surface, coastal considerations, typical costs and when it is worth calling in a professional.
Most slippery steps come down to a combination of moss, algae, wet leaves and a surface that has worn smooth over time. Shaded, north facing steps under trees are usually the worst affected, since they stay damp for longer and rarely get a chance to dry out between showers. Poor drainage makes it worse, as standing water gives moss and algae the damp conditions they need to spread across the surface.
If your steps are part of a wider sloping or terraced garden, our Terraced Garden Ideas: Levels, Steps & Retaining Walls guide covers the bigger picture of levels and retaining walls too.
The right fix depends on what your steps are made from. Here is how we approach each surface.
Resin bound surfacing can be specified with a coarser aggregate on steps than you would use on a flat patio, which gives immediate grip underfoot even when wet. If your existing Resin Bound steps have gone smooth, a fresh top coat with the right aggregate grade usually restores the grip without needing to rebuild the steps from scratch. A defined nosing in a contrasting colour also makes each step edge easier to see. For more on what is possible, see our Resin Patio Ideas: Your Inspiration Guide.
Composite decking steps get slippery when algae builds up in the grain of the board, especially on shaded steps that do not dry out. Regular cleaning helps, and swapping in grooved or textured anti-slip decking boards on the treads makes a real difference for a permanent fix. Our Decking team can also check the substructure and drainage underneath, since water trapped below the boards is often part of the problem. Our Raised Decking Ideas For Gardens With A View guide has more examples of decking steps done well.
Natural stone and paving steps can be treated with a proprietary anti-slip coating, or have anti-slip strips fitted to the leading edge of each tread. Where the stone itself has worn smooth, a light re-texturing or replacing the worst affected slabs is usually more effective long term than relying on coatings alone.
Properties within sight of the sea, from Ilfracombe down to Dartmouth or along the Dorset coast at Weymouth, need salt resistant materials on top of any anti-slip work. Salt exposure can corrode standard metal nosings and fixings, so stainless steel or marine grade aluminium is worth the extra cost. If you are asking for a quote and you are near the coast, mention it so the right materials get specified from the start.
Costs vary with the size of the job, access and the surface involved. As a rough guide:
| Surface | Typical Fix | Cost Guide |
|---|---|---|
| Resin bound | Fresh coarser aggregate top coat | £450 to £1,200 for a short flight of steps |
| Composite decking | Anti-slip decking boards on treads | £90 to £180 per square metre including labour |
| Stone or paving | Anti-slip coating or strips | £50 to £120 per square metre depending on finish |
We always recommend a site visit and a written quote, since coastal specification, substrate repairs and access can all affect the final price.
Whatever surface you have, a little regular attention keeps steps safer through autumn and winter:
If steps are cracked, a nosing has come loose, or a handrail is missing on a steep flight, this becomes a safety issue rather than a simple clean and treat job. Movement in the ground nearby can also be a sign of something bigger, worth a read in our Garden Subsidence: Signs, Causes & How to Fix It guide. Our Landscaping team can survey the whole area, including drainage, levels and any retaining structures nearby, rather than just treating the symptom.
Late summer and early autumn is the ideal window to get ready for the wetter months ahead, since resin and coatings need dry conditions to cure properly. Booking now, while the ground is still workable, means your steps will be ready well before winter weather arrives.
Clean off moss, algae and leaves regularly, and check that water is draining away rather than pooling on the tread. For a lasting fix, add an anti-slip coating or strips, or resurface with a coarser, grippier finish.
Not when specified correctly. Resin bound steps use a coarser aggregate grade than a flat patio, which gives grip underfoot even in wet weather. Steps that have gone smooth over time usually need a fresh top coat.
Yes, anti-slip strips or nosings can usually be fitted to existing stone, decking or concrete steps without rebuilding them, as long as the substrate underneath is sound.
Small jobs typically start from around £450 to £1,200 for resin steps, while decking or paving fixes are often priced per square metre. A site visit gives you an accurate, written quote.
Book a free, no obligation Book A Survey and we will assess your steps, check drainage and recommend the right fix for your surface and budget. You can also get in touch through our Contact page.
