Our aluminium balustrade system has been load tested to the domestic (Category A) barrier loads in BS 6180:2011 and PD 6688-1-1, on level runs and 35° stairs at the full 1,829mm span. It passed every domestic load within the 25mm deflection limit, with an ultimate failure load more than 9 times the domestic design load. It is for domestic decking, patios, steps and stairs.
The compliance and load data for our self-install aluminium balustrade system — posts, rail kits, stair brackets and gate. All figures are taken from load test report TOL-LTS-001 Rev B (22 October 2026), which you can download here.
BS 6180:2011 — Barriers in and around buildings — Code of practice sets the design geometry for barriers. The minimum horizontal loads a barrier must resist come from BS EN 1991-1-1 and its UK National Annex, with the barrier values given in PD 6688-1-1. Our system was tested to the domestic (Category A) values — see the Load Performance tab →
The test covers domestic (Category A) loads only. It does not cover the supporting structure (deck, wall or slab) or the ground and wall fixings — whether a particular installation complies also depends on it being assembled correctly and fixed to a suitable structural surface.

The aluminium balustrade system installed on a raised residential decking area — 1100mm finished guarding height with vertical picket infill.
The system was tested exactly as supplied to customers, in its standard production specification.
| Component | Specification |
|---|---|
| System type | Modular guarding — posts with top and bottom rail kits and vertical picket infill |
| Material | All extrusions in aluminium alloy 6005-T6 |
| Finish | Black polyester powder coating, RAL 9017 matt black, 60–120µm film thickness |
| Post | 75 × 75mm square · 1140mm to cap · 120mm square base plate |
| Finished guarding height | 1100mm on level runs |
| Rail kit length | 1829mm (cut down on site for shorter bays) |
| Maximum clear span | 1,829mm between post faces |
| Infill / picket spacing | Vertical pickets at 96.5mm — a 100mm sphere cannot pass |
| Brackets | Fixed brackets on straight runs; stair bracket kit on stairs; stainless steel (304) bracket fixings |
| Gate | 1168mm overall (≈ 1190mm opening) |
| Ground and wall fixings | Not supplied — chosen to suit the surface the posts are fixed into |

Do not exceed 1,829mm between post faces. This is the span the system was load tested at. Runs longer than 1,829mm need additional posts.

Rail kit fitted between two 75mm square posts — top and bottom rails with vertical pickets at 96.5mm spacing.
Each load was applied at the full 1,829mm span on a level run and at a 1,792mm clear span on a 35° stair run. Acceptance: horizontal deflection under load no more than 25mm, return to position on unloading with no significant permanent deformation, and all connections intact.
| Load | Requirement | Level run, 1,829mm | Stair run (35°), 1,792mm | Result |
|---|---|---|---|---|
| Line load at the top of the barrier | 0.36 kN/m | 14.7mm deflection | 11.0mm deflection | PASS |
| Distributed load on the infill | 0.5 kN/m² | 12.2mm deflection | 14.2mm deflection | PASS |
| Point load on an individual picket | 0.25 kN | 18.6mm deflection | 24.5mm deflection | PASS |
After the domestic load tests, the line load was increased progressively until the system failed.
| Configuration | Ultimate failure load | Margin over 0.36 kN/m |
|---|---|---|
| Level run, 1,829mm | 702 kg — approx. 3.8 kN/m | More than 10× |
| Stair run (35°), 1,792mm | 644 kg — approx. 3.5 kN/m | More than 9× |
| Level run, 1,500mm | 738 kg — approx. 4.8 kN/m | More than 13× |
| Stair run (35°), 1,500mm nominal | 624 kg — approx. 4.1 kN/m | More than 11× |
The failure mode for each configuration at ultimate load is recorded in the full load test report.
These results are for the domestic (Category A) loads that apply within or serving a single home — 0.36 kN/m line load. The system is for decking, patios, steps and stairs. For any other type of building, contact us before ordering.
The tested performance applies when the system is installed to the following conditions.
Do not exceed the tested span. Runs longer than 1,829mm need additional posts.
Use fixings rated for the load and the base material. Ground and wall fixings are not supplied.
1100mm above the finished floor level on level runs.
Pickets at 96.5mm, so a 100mm sphere cannot pass.
Fixed brackets on straight runs and the stair bracket kit on stairs, assembled in accordance with the supplied installation instructions.
For any other type of building, contact us before ordering.
This data covers the aluminium balustrade system only. The supporting structure and the ground and wall fixings are the responsibility of the installer.
Summary of load test report TOL-LTS-001 Rev B. The full report is available to download.
Applied horizontally at the top of the barrier and held for at least one minute. Level and stair runs passed within the 25mm limit.
Applied across the full picket infill. Level and stair runs passed within the 25mm limit.
Applied to an individual picket through a 100mm loading head and held for 90 seconds. Level and stair runs passed within the 25mm limit.
Each configuration was loaded and unloaded 10 times at more than double the domestic line load. No bracket or screw loosening was recorded, and rail positions stayed stable to within 1–2mm.
The powder coating passed 1,000 hours of neutral salt spray testing with the highest ratings — no creepage at the scribe, no blistering, no rusting.
Chemical composition verified by test to ASTM B211-12, with all elements within the alloy specification limits.
| Item | Detail |
|---|---|
| Report | TOL-LTS-001 Rev B — Load Test Summary Report, Aluminium Balustrade System |
| Date of issue | 22 October 2026 (Rev B; first issued 13 October 2026) |
| Date of testing | September–October 2026 |
| Testing conducted by | The system manufacturer, at its production facility, to a test specification issued by The Outdoor Look |
| Standards | BS 6180:2011, BS EN 1991-1-1 (UK National Annex) and PD 6688-1-1 — domestic (Category A) loads |
| Configurations tested | Level runs at 1,829mm and 1,500mm clear span; 35° stair runs at 1,792mm and 1,500mm nominal span |
| Method | Calibrated loads, instrumented deflection measurement at every load stage, photographic and video records |
| Line load 0.36 kN/m | All configurations — PASS |
| Infill load 0.5 kN/m² | All configurations — PASS |
| Point load 0.25 kN | All configurations — PASS |
| Ultimate failure load | More than 9 times the domestic design load in every configuration |
| Stair guarding height | Approximately 1,100mm measured vertically from the pitch line at 35° |
The report relates to the system as tested. Whether a particular installation complies also depends on correct assembly and fixing to a suitable structural surface, which remains the responsibility of the installer.
Cannot find your answer? Call us on 01282 526428.
It has been load tested to the domestic (Category A) barrier loads in BS 6180:2011 and PD 6688-1-1: a 0.36 kN/m line load at the top of the barrier, a 0.5 kN/m² load on the infill and a 0.25 kN point load on an individual picket. It passed all three on level runs and 35° stairs at the full 1,829mm span, within the 25mm deflection limit.
When the line load was increased to failure, the ultimate failure load was more than 9 times the 0.36 kN/m domestic design load in every configuration tested.
Domestic decking, patios, steps and stairs. For any other type of building, contact us before ordering.
Yes. A stair run was tested at a 35° pitch using the standard stair bracket kit and passed every domestic load, with a guarding height of approximately 1,100mm measured vertically from the pitch line.
1100mm on level runs. The post stands 1140mm to the top of the post cap, on a 120mm square base plate.
Yes — the vertical pickets are spaced at 96.5mm, so a 100mm sphere cannot pass through the infill. The infill and picket spacing must be left unmodified.
Yes. The powder coating passed 1,000 hours of neutral salt spray testing (ASTM B117) with no creepage at the scribe, no blistering and no rusting. In coastal areas, rinse it down roughly once a month to remove salt build-up.
1,829mm clear span, measured between post faces — do not exceed it. Runs longer than that need additional posts.
No — ground and wall fixings are not supplied, as the right fixing depends on what the posts are going into. Each post must be fixed to a suitable structural surface with fixings rated for the load and the base material.
Yes. Download the full load test report (TOL-LTS-001) as a PDF.
Download the load test report and data sheet, plan your parts with the calculator, or talk to the team about your project.
The full report — product tested, standards, method, results and materials.
Download the Report →Specification, load results, materials and installation conditions in three pages — TOL-ALU-BAL Rev 2.1.
Download the Data Sheet →Enter your measurements and the calculator works out the posts, rails, brackets and gates your project needs — added to basket in one click.
Build Your Own Balustrade →Send us your measurements and we will check your layout and provide a tailored quote.
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