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Most flat roofs were never laid out with a clear walking route in mind. The path to rooftop plant and equipment usually crosses cable trays, conduit and low-lying pipework. These low-level roof obstacles are easy to overlook, yet stepping over them is enough to nudge people off a safe line.
Under the Work at Height Regulations 2005, that route has to be planned and provided, not left to chance. Kee Step mini stepovers offer a right-sized answer for the low obstacles that a full-height platform would over-engineer. This article covers what these obstacles are, which roof types suit a mini stepover, how the mini step modules work, and how they meet EN 516 Class 1-C.
What counts as a low-level roof obstacle?
Not every obstruction on a roof is large. Cable trays, low-lying pipework, conduit, small ductwork, low upstands and minor changes in level all sit at the lower end of the scale, typically between 200mm and 400mm high.
It is easy to assume these are too small to matter. In practice, a low obstacle in the wrong place still interrupts a safe route. People step over it, reach across it, or walk around it onto an unprotected part of the roof, and that is where the risk sits.
The point is rarely the obstacle itself. It is the walking route around it. A clearly defined path keeps maintenance teams on safe ground and protects the roof covering from unnecessary foot traffic and the damage it can cause.
Why a mini step is the right-sized solution
Scale matters when choosing access equipment. A 200mm cable tray does not call for a 1400mm stepover, and fitting an oversized structure simply wastes footprint and money.
A mini step bridges a low obstacle cleanly, which is a real advantage on a busy flat roof where the space around plant is already tight. The units are supplied flat-packed with assembly instructions, so installation is quick and causes little disruption to the building below.
For facilities and estates teams, that means a safe access route can be put in place without a major project. The mini step is the proportionate option: enough to do the job, and no more.
How Kee Step mini step overs work
The construction is straightforward and built to last. Kee Step mini step modules are made from galvanised steel and aluminium extrusion, with reinforced nylon slip-resistant treads for sure footing in wet or greasy conditions. They are low maintenance and hold up well to weather and regular use.
There are two clearance heights and three lengths to choose from:
- Clearance heights of 200mm and 400mm
- Three lengths, in 3, 4 and 5 tread options
- Free-standing on base weights, or fixed to a suitable securing surface
Each mini step over gives a stable, defined crossing point, with a tread surface that stays sure underfoot.
Free-standing or fixed?
The two base options suit different situations. The free-standing version sits on weighted feet and needs no roof penetration, so the roof membrane stays intact and the unit can be repositioned if the layout changes.
The fixed version is secured to the roof structure where a permanent installation is preferred, for example where the unit forms part of a set walking route used every day. APS will advise on the right choice at survey, based on the roof covering and how the access route is used.
Which roof types suit a mini stepover?
Mini step modules are designed for flat roofs and low pitch roofs, where the walking surface is close to level and the obstacles to cross are small. They sit comfortably on the common flat roof coverings, including membrane, asphalt and PVC, spreading their load across the roof structure.
A pitched roof is a different proposition. Where a roof is finished with roof tiles or concrete tiles and has a steeper roof pitch, access is usually provided by a graded walkway system such as Kee Walk rather than a stepover, because the roofing materials and the angle change how people move across the surface.
Knowing which roof structure you are dealing with is the first step in specifying the right solution, and it is something APS confirms before recommending anything.
Compliance and safe access: EN 516 Class 1-C
Compliance is the reason this all matters. Kee Step mini step modules are tested and compliant to EN 516 Class 1-C, the standard for prefabricated roof access accessories. That gives specifiers and duty holders confidence that the product performs as required.
It also fits the wider legal picture. The Work at Height Regulations 2005 place a duty on the responsible person to plan work at height and provide safe access, favouring collective, passive measures over reliance on individual care.
A fixed walking route over an obstacle does precisely that. It takes the decision out of the individual’s hands and builds safety into the structure itself, which is the principle behind the hierarchy of control.
A safer route across low-level roof obstacles
Low-level obstacles are among the easiest roof hazards to solve well. With the right-sized mini step in place, a cluttered roof becomes a clear, compliant route that keeps people moving safely and protects the surface underfoot.
It is a small intervention with a lasting return, and a practical example of the Kee Safety philosophy of Separating People from Hazards.
Speak to APS
If low-level obstructions are getting in the way of safe roof access, APS can help. Our team will survey the roof, recommend the right Kee Step mini step modules or a bespoke solution where a standard kit will not fit, and assist with installation.
Rooted in Scotland and working UK-wide, we are here to get your teams safely from one side of the roof to the other. Get in touch to discuss your project.