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Description
Retro-Fit Stainless Steel Anti-Slip Stair Nosing R11 (TREP-GK) — No Tile Removal Required
The Schluter TREP-GK is a professional retro-fit stainless steel stair nosing with superior R11 slip resistance — the highest anti-slip rating for stair nosings. Bonds directly onto existing tiled, stone, or porcelain step edges using Kerdi-Fix adhesive. No tile removal, no disruption, no mess. The definitive commercial-grade solution for upgrading stair safety in offices, public buildings, hotels, and high-footfall environments without a full refurbishment.
Technical Specifications
| Material | Brushed stainless steel V2A / AISI 304 Grade |
|---|---|
| Installation Method | Retro-fit — bonds to existing step surface with Kerdi-Fix adhesive |
| Slip Resistance | R11 (DIN 51 130) — mineral grain tread |
| Available Widths | 34mm or 59mm |
| Available Lengths | 1m, 1.5m, 2.5m |
| Tread Colours | Yellow RAL 1021, Black RAL 9011, Nut Brown RAL 8007, Transparent |
| Application | Internal use — retro-fit over existing tiled/stone steps |
| Adhesive Required | Schluter Kerdi-Fix (sold separately) |
Why R11?
R11 is the highest commercial slip resistance rating for stair nosings under DIN 51 130. The TREP-GK uses a coloured mineral grain tape — the same industrial-grade grit used in professional safety flooring. Where R10 suits residential settings, R11 is the standard specified for offices, public buildings, schools, hospitals, retail, and hospitality venues where duty of care and DDA compliance are critical.
Why Choose Retro-Fit?
- Installs directly over existing tiles — no tile removal, no mess, no downtime
- Transform unsafe step edges in hours, not days
- Ideal for rental properties, landlords, and commercial refurbishment
- Maintains the appearance of your existing staircase
- R11 mineral grain tread provides maximum grip underfoot
- Professional finish — purpose-built appearance
Choosing Your Colour
- Yellow RAL 1021 — high-visibility safety yellow, standard in commercial and public buildings for clear hazard identification
- Black RAL 9011 — high contrast, contemporary finish, maximum visibility in light-tiled environments
- Nut Brown RAL 8007 — warm earthy tone that complements natural stone, wood-effect tiles, and terracotta
- Transparent — clear tread that blends discreetly with your existing tiles
Suitable Applications
- Commercial offices, corporate headquarters
- Hotels, restaurants, and hospitality venues
- Public buildings, schools, healthcare facilities
- Retail and shopping centres
- Rental properties and HMOs
- Any existing tiled or stone staircase needing a commercial-grade safety upgrade
Installation
Clean the step edge thoroughly. Apply Kerdi-Fix adhesive to the underside and bond firmly to the existing step. No drilling or tile removal required. Matching end caps and replacement mineral grain tread tape available separately.
UK Stock | R11 Commercial Grade | No Tile Removal | 4 Tread Colours | 34mm & 59mm Wide
Delivery Information
| Service | Timeframe | Cost |
|---|---|---|
| Standard UK Delivery | 2–4 business days | £9.99 |
Orders placed before 12pm Mon–Fri are typically dispatched same day. Delivery to all UK addresses. Contact us for international enquiries.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Frequently Asked Questions
Find answers to common questions about our stair nosings
Stair nosings are protective edge strips fitted to the front of stair treads. They serve multiple purposes: preventing slip accidents, protecting stairs from wear, meeting building regulations, and improving visibility for those with impaired vision. They're essential for both safety compliance and extending the life of your stairs.
Yes, all our products are designed to meet UK Building Regulations, including:
- Part K – Protection from falling and collision
- Part M – Access to and use of buildings
- BS 8300 – Design for disabled access
Our contrasting nosings meet the requirements for visually impaired users.
We offer stair nosings in multiple materials:
- Aluminium – Lightweight, durable, ideal for most applications
- GRP/Fibreglass – Heavy-duty, excellent for external and industrial use
- Rubber/PVC – Flexible, great for refurbishment projects
- Brass – Premium finish for high-end residential
Yes! We offer a cut-to-length service for most of our stair nosing products. Simply provide the measurements you need when ordering, or contact our team for assistance. This ensures a perfect fit with minimal on-site cutting required.
Installation varies by product type but typically involves:
- Screw-fixed – Drill, countersink and screw into substrate
- Adhesive-fixed – Use high-strength adhesive for bonding
- Channel systems – Insert nosing into pre-installed track
We provide detailed PDF installation guides and video tutorials for every product range.
We offer fast UK delivery on all orders:
- Standard Delivery – 2-3 working days
- Express Delivery – Next working day (order before 2pm)
- Free Delivery – On orders over £100
Large or bulk orders may require pallet delivery – contact us for details.
Yes, we offer trade accounts for contractors, architects, and facilities managers. Benefits include:
- Competitive bulk pricing
- 30-day payment terms (subject to approval)
- Dedicated account manager
- Priority technical support
Contact us to apply for a trade account.
Ramp/Angled – Gradual slope, best for high-traffic areas and wheelchair access
Bullnose/Round – Curved edge, traditional look, good for residential stairs
Pencil Edge – Minimal profile, sleek modern appearance
Choose based on your aesthetic preference and the level of protection required.
Still have questions?
Our stair nosing specialists are here to help with product selection, compliance queries, and installation advice.
Contact Us: 01282 270 010