Anti-Slip GRP Stair Tread Covers 345mm x 55mm UK Made

Worn steps turn dangerous quickly once rain, frost or heavy footfall gets to them. These anti-slip GRP stair tread covers give you a fast, permanent fix: a 5mm-thick glass reinforced plastic plate with a hard gritted surface that fits straight over your existing steps, indoors or out. Each cover is manufactured in the UK and sized at 345mm deep with a 55mm nosing return, so it caps the front edge of the step where slips actually start. If you look after a fire escape, an external staircase at work, school or communal steps, or a slippery flight at home, you can bring the whole flight up to standard in an afternoon without replacing a single step.

Why GRP works where paint and tapes fail

Glass reinforced plastic is the material used on walkways, ramps and gantries in demanding industrial settings, and it earns its place on stairs for the same reasons. The grit is bonded into the moulded plate rather than stuck on top, so it cannot peel like adhesive tape or wear through like anti-slip paint. The surface has been independently tested in accordance with BS EN 16165:2021, achieving low slip potential ratings in wet, icy and oily conditions. The plate itself achieves an A2fl-s1 fire classification in accordance with EN 13501-1, an important consideration on escape routes, and GRP is non-conductive, which makes it suitable around electrical plant and substations. At roughly a tenth of the weight of steel plate it can be carried up a flight and fitted by one person, yet it shrugs off frost, UV and cleaning chemicals with no maintenance beyond a sweep.

• 5mm GRP plate with bonded anti-slip grit, 345mm going and 55mm nosing
• Tested in accordance with BS EN 16165:2021 with low slip potential ratings
• A2fl-s1 fire classification in accordance with EN 13501-1
• Non-conductive and weatherproof for indoor and outdoor use
• Backed by the manufacturer's 3-year guarantee

Where these tread covers are used

You will find this profile on external fire escapes, warehouse and mezzanine stairs, school and office entrances, communal housing steps, farm and stable stairways, canal and coastal walkway steps, and timber garden or decking stairs that turn slippery in winter. The contrasting nosing colours also provide the visual step-edge definition recommended in accessibility guidance for partially sighted users.

Specifications

Choosing the right option

Measure the width of your step and pick the nearest length at or above it; the covers cut cleanly to width on site with a standard angle grinder or fine-tooth saw, and made-to-measure sizes are available on request. Choose the yellow nosing for external, industrial and escape-route stairs where maximum edge visibility matters, and the white nosing where a cleaner look suits an office, school or residential setting. Order pre-drilled if you plan to screw-fix into timber or concrete, which is the strongest hold on outdoor stairs; choose un-drilled if you prefer to bond the covers with a polyurethane adhesive onto sound, flat steps, or want to position holes yourself.

Installation, use and care

Fitting is straightforward: clean and dry the step, dry-lay the cover to check the fit, then either screw through the pre-drilled holes or apply adhesive in beads across the underside and press down firmly, working from the nosing back. A typical domestic flight is done in under two hours. Once down, the covers need no coatings or treatment; sweep them and jet-wash occasionally to keep the grit clear of debris.

Frequently asked questions

Will they fit steps shallower than 345mm? Yes. The plate can be cut down to your going on site, or supplied cut to size on request; the 55mm nosing stays intact either way.

Are they suitable for wooden stairs? Yes. Screw-fixing into timber with the pre-drilled option is the quickest, most secure method and adds grip without altering the staircase itself.

Do they work in icy conditions? The gritted surface keeps its bite in wet, frosty and oily conditions, which is why the same material is specified for external fire escapes.

What is the difference between un-drilled and pre-drilled? Pre-drilled covers come ready countersunk for screws; un-drilled covers are for adhesive fixing or for drilling your own hole positions.

Ordering and delivery

All twenty size, colour and fixing combinations are held for prompt UK-wide delivery. Order the number of treads matching your step count, and add one spare if you are cutting several to width. If you need help choosing lengths or a made-to-measure size, contact us with your step measurements before ordering.