Trimax Gardentop Staircase with Handrail – Anthracite
At a Glance
Use Type: Outdoor
Structure Material: Hot-dip galvanised steel (EN ISO 1461:2009 compliant)
Tread Material: TRIMAX® fibreglass reinforced plastic
Tread Finish: Anthracite anti-slip surface
Maximum Point Load: 200 kg
Tested Total Load: 700 kg
Number of Treads Available: 2 – 12
Staircase Width Options: 840 mm or 1040 mm
Tread Width Options: 800 mm or 1000 mm
Tread Depth: 220 mm
Tread Thickness: 40 mm
Tread Rise Adjustment: 180 mm – 220 mm
Maximum Floor-to-Floor Height: 2640 mm (2.64 m)
Guarantee: Lifetime Guarantee
Full Product Overview
The Trimax Gardentop Staircase with Handrail – Anthracite is a premium outdoor staircase system designed to provide safe, durable and visually refined access between external levels. Ideal for raised patios, decking areas, balconies, garden offices and terraces, this modular staircase combines structural strength with advanced weather-resistant materials for long-term outdoor performance.
Its TRIMAX® fibreglass-reinforced composite treads are specifically engineered for outdoor environments, offering excellent resistance to moisture, rot, UV exposure and seasonal temperature changes. The anti-slip anthracite tread surface provides secure footing in wet conditions, helping maintain confidence and safety throughout the year.
The staircase structure is manufactured from hot-dip galvanised steel compliant with EN ISO 1461:2009, providing excellent corrosion resistance and long-lasting durability in exposed outdoor conditions. Hidden fixing details and the clean anthracite finish create a modern architectural appearance that integrates well with contemporary landscaping and exterior design.
Designed as a modular system, the staircase is available in configurations from 2 to 12 treads, covering floor-to-floor heights from 0.36 m up to 2.64 m. Adjustable tread rise settings between 180 mm and 220 mm provide installation flexibility across different outdoor layouts and height requirements.
Supplied complete with a matching handrail system, galvanised balusters and installation components, the Trimax Gardentop Staircase delivers both structural reliability and everyday practicality for permanent outdoor use.
Sizes & Dimensions
| Size / No. of Treads | Product Code | Min Floor-to-Floor Height | Max Floor-to-Floor Height | Total Going | Tread Depth |
|---|
| 2 Tread | 5068305 | 0.36 m | 0.44 m | 0.44 m | 220 mm |
| 3 Tread | 5068306 | 0.54 m | 0.66 m | 0.66 m | 220 mm |
| 4 Tread | 5068307 | 0.72 m | 0.88 m | 0.88 m | 220 mm |
| 5 Tread | 5068308 | 0.90 m | 1.10 m | 1.10 m | 220 mm |
| 6 Tread | 5068309 | 1.08 m | 1.32 m | 1.32 m | 220 mm |
| 7 Tread | 5068310 | 1.26 m | 1.54 m | 1.57 m | 220 mm |
| 8 Tread | 5068311 | 1.44 m | 1.76 m | 1.76 m | 220 mm |
| 9 Tread | 5068312 | 1.62 m | 1.98 m | 1.98 m | 220 mm |
| 10 Tread | 5068313 | 1.80 m | 2.20 m | 2.20 m | 220 mm |
| 11 Tread | 5068314 | 1.98 m | 2.42 m | 2.42 m | 220 mm |
| 12 Tread | 5068315 | 2.16 m | 2.64 m | 2.64 m | 220 mm |
Choose this staircase if you require a weather-resistant outdoor access solution with flexible sizing and premium long-term durability.
Key Benefits
Weather-resistant outdoor construction
TRIMAX® composite treads resist moisture, rot and UV exposure.
Anti-slip anthracite tread surface
Designed to provide reliable grip in wet outdoor conditions.
Hot-dip galvanised steel frame
Provides long-term corrosion resistance and structural durability.
Integrated handrail system included
Improves stability and confidence during everyday use.
Flexible modular sizing
Available from 2 to 12 treads with adjustable rise settings.
Modern architectural appearance
Hidden fixings and anthracite finish complement contemporary outdoor spaces.
Certified structural performance
Tested to 200 kg point load and 700 kg total load capacity.
Final Verdict
The Trimax Gardentop Staircase with Handrail – Anthracite combines premium outdoor materials, structural strength and modern styling in a highly durable modular staircase system.
With TRIMAX® fibreglass-reinforced treads, galvanised steel construction, anti-slip surfaces and flexible tread configurations, it delivers a dependable long-term access solution for raised outdoor spaces. Backed by a Lifetime Guarantee, it offers excellent safety, weather resistance and everyday usability for exterior installations.
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