How to Fix Slippery Composite Decking
Quick Answer: How to Fix Slippery Composite Decking
Slippery composite decking cannot be treated with chemical anti slip solutions because the surface is low porosity. The correct solution is to apply a textured anti slip coating. Tuff Grip Clear adds aggressive traction while preserving the original look. Dura Grip E2 provides higher durability and is available in clear or colours for heavier traffic or commercial environments.
Slippery composite decking is a common problem in the UK, particularly in wet, shaded, or high traffic areas. Although composite boards are low maintenance and resistant to rot, they can become dangerously smooth when exposed to rain, algae, frost, or cleaning residue.
If your composite decking feels unsafe underfoot, replacement is usually not necessary. In most cases, the correct solution is to apply a specialist anti slip decking coating.
This guide explains:
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Why composite decking becomes slippery
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Why chemical treatments are not suitable
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When to use Tuff Grip Clear
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When to use Dura Grip E2 in clear or colours
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How to choose the right non slip solution
This article is written to support homeowners, installers, and facilities managers looking for a safe and practical way to fix slippery composite decking.
Why Composite Decking Becomes Slippery
Composite decking is manufactured from a blend of recycled plastics and wood fibres. The surface is typically sealed and low porosity, which means it does not absorb moisture in the same way as timber.
However, several factors can reduce traction:
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Rainwater sitting on smooth boards
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Algae and biofilm growth in shaded areas
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Surface wear reducing original texture
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Residue from cleaning products
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Frost and condensation
Unlike traditional timber decking, composite boards do not respond well to chemical etching treatments. Because the surface is sealed, anti slip performance must be added through a surface coating, not a chemical reaction.
Why Chemical Treatments Are Not Suitable for Composite Decking
Chemical anti slip treatments work by reacting with mineral surfaces such as porcelain or stone. Composite decking does not have the same mineral structure.
For this reason:
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Chemical treatments will not properly react with composite boards
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Results are unpredictable
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Slip resistance improvement is unreliable
The correct approach is to apply a textured anti slip coating that sits on top of the boards and creates physical grip.
Manufacturers such as SlipDoctors provide coatings specifically designed for challenging surfaces like composite decking.
The Correct Way to Make Composite Decking Non Slip
To fix slippery composite decking effectively, a coating must:
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Bond securely to low porosity surfaces
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Withstand outdoor weather exposure
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Provide aggressive traction in wet conditions
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Maintain durability under foot traffic
Within the SlipDoctors UK range, two products are commonly used depending on the environment and required durability:
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Tuff Grip Clear
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Dura Grip E2 (Clear and Coloured options)
Option One: Tuff Grip Clear for Strong, Clear Traction
Tuff Grip Clear is a single component anti slip coating designed to add aggressive grip while maintaining the natural look of the decking.
It is selected when:
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A clear finish is required
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The original composite colour needs to remain visible
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The area is domestic or light commercial
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Strong traction is required in wet conditions
Tuff Grip Clear creates a visibly textured surface that significantly improves grip on slippery composite boards.
Common applications include:
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Garden decks
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Balconies
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Steps
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Poolside areas
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Sloped decking sections
It is ideal where safety is a priority but repainting in a solid colour is not desired.
Option Two: Dura Grip E2 for Heavy Duty and Commercial Use
Dura Grip E2 is a two component epoxy anti slip coating designed for higher durability environments.
It is available in:
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Clear for maintaining the existing look
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Coloured finishes for full surface refresh
Dura Grip E2 is typically chosen when:
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Foot traffic is heavy or constant
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The decking is in a commercial setting
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Long term durability is critical
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The surface needs a uniform new appearance
Because it is a two part epoxy system, it offers stronger chemical resistance and longer wear life compared to single component coatings.
This makes it suitable for:
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Restaurants and hospitality venues
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Public outdoor walkways
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Access ramps
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Commercial leisure areas
Where maximum durability is required, Dura Grip E2 is often the preferred option.
Clear vs Coloured Anti Slip Deck Coatings
Choosing between clear and coloured coatings depends on the desired finish.
Clear coatings:
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Preserve the original composite appearance
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Add visible but transparent texture
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Are often preferred for domestic decking
Coloured coatings:
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Refresh faded or worn boards
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Create a uniform finish
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Provide the same level of traction
Both options create a defined anti slip surface layer that improves grip in wet and damp conditions.
Preparing Composite Decking Before Applying a Coating
Proper preparation is essential for adhesion and performance.
Before applying Tuff Grip Clear or Dura Grip E2:
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Thoroughly clean the decking to remove algae, grease, and debris
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Rinse and allow the surface to dry completely
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Ensure no waxes or oily residues remain
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Light abrasion may be recommended depending on surface condition
Poor preparation is one of the most common reasons anti slip coatings fail prematurely.
Should You Replace Slippery Composite Decking
In most situations, replacement is not necessary.
Replacing composite decking is expensive and disruptive. Applying a specialist non slip decking coating is typically far more cost effective and extends the life of the existing boards.
The correct solution depends on:
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Traffic levels
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Exposure to moisture
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Required traction level
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Aesthetic preferences
Final Thoughts: The Best Way to Fix Slippery Composite Decking
Slippery composite decking is a frequent issue, especially in the UK climate. Because composite boards are low porosity, chemical anti slip treatments are not suitable.
Instead, applying a clear or coloured anti slip coating provides a predictable and durable way to improve safety.
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Tuff Grip Clear delivers aggressive traction while maintaining the original look.
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Dura Grip E2 provides enhanced durability and is ideal for heavier traffic or commercial environments.
Choosing the correct coating ensures safer decking without the cost and disruption of full replacement.
