Stair tread covers & fiberglass stair treads
Anti-slip FRP stair tread covers for retrofitting existing concrete, steel, and timber stairs — plus full fiberglass grating treads for new FRP stairways. Grit walking surface, high-visibility nosing, cut to your tread schedule, immune to the corrosion that destroys coated metal treads.
Retrofit covers, or full FRP treads
Anti-slip tread covers
Thin fiberglass plates — typically 3–4 mm — with a bonded grit surface and a contrasting safety nosing, production-cut to sit over each existing tread. The stairway stays in service during installation: adhesive plus a row of mechanical fixings at the nosing, tread by tread. The plate itself is the same gritted material offered on our fiberglass sheet program.
Fiberglass grating treads
Complete treads for new FRP stairs: molded grating treads in the same 25 and 38 mm depths as our grating panels, or pultruded T-bar treads for longer clear widths — both with integral grit nosing and end plates pre-drilled for stringer bolting. Pair with fiberglass handrail systems for a fully non-conductive stairway.
Where they earn their keep: chemical and fertilizer plants, wastewater works, coastal and offshore platforms, substations and battery rooms, food-plant washdown areas — anywhere steel checker plate rusts, timber rots, or a conductive tread is a hazard. Covers are the fastest fix for stairs that are structurally sound but dangerous underfoot.
Frequently Asked Questions
What are FRP stair tread covers and how do they install?
A stair tread cover is a thin anti-slip fiberglass plate — typically 3–4 mm with a bonded silica-grit surface and a high-visibility nosing — shaped to sit over an existing concrete, steel checker-plate, or timber tread. Installation is adhesive plus mechanical fixings at the nosing, one tread at a time, so a stairway can stay in service during the retrofit. No hot work, no coating cure window, and each cover is cut to your tread dimensions before dispatch.
Tread covers or full grating treads — which do I need?
Retrofit over sound existing stairs: covers. New FRP stairways and platforms, or treads that have corroded through: full fiberglass grating treads — molded grating treads (25 or 38 mm deep, matching the mesh panels on our gratings page) or pultruded T-bar treads, both supplied with an integral grit nosing and end plates drilled for stringer bolting. If the stringers themselves are failing, look at a complete FRP stair assembly from structural profiles instead of tread-level repair.
How slip-resistant are the grit surfaces?
The bonded-grit walking surface is the same system used on industrial FRP grating: coarse silica or aluminum-oxide grit in the top resin layer. Grit surfaces of this construction typically achieve the higher slip-resistance classes when tested to DIN 51130 / AS 4586-type ramp methods; specify the rating your project requires in the RFQ and we confirm it against the production batch, with third-party test reports available on request.
What fire ratings are available?
Standard covers use a general-purpose polyester system. Where the stair is an escape route or the specification calls for surface-burning limits, order the fire-retardant resin option — the FR system is the same family that carries ASTM E84 Class 1 flame-spread ratings on our profile range, with certified per-batch test reports available when the project requires documentation.
What sizes can be supplied?
Covers are production-cut to your tread schedule — length, depth (going), and nosing height per stair flight — so there is no standard-size constraint to design around. Typical retrofit programs run 600–1,500 mm tread lengths. Send the tread schedule as a simple table (count × length × depth) with the RFQ; mixed sizes in one order are normal.
Why fiberglass instead of steel or aluminum tread plates?
Steel checker plate rusts at exactly the point you walk on, aluminum work-hardens slippery-smooth, and both conduct electricity. Fiberglass treads keep their grit surface through the corrosion exposures that destroy coated metal — washdown chemicals, coastal salt, battery rooms — and stay non-conductive and non-sparking, which is why they are the default in chemical plants and substations.
Have a question about this product?
Our FRP Engineering Advisor answers spec, sizing, and chemical-compatibility questions instantly — and routes complex ones to the right human.
Pre-filled question: “I need anti-slip stair treads: [retrofit covers / new grating treads], tread count and sizes [n × length × depth mm], environment [chemical/coastal/plant], slip rating and fire requirements [R-class / ASTM E84]. What do you recommend and what should the RFQ include?”
Send your tread schedule — quote within 24 hours.
Our engineering team is ready to help you find the right FRP solution. Get in touch for technical consultation or a detailed quotation.