Portable stairs are one of those pieces of equipment that look simple from the outside but come in more configurations than most buyers expect. The right choice depends on what you’re accessing, how often you’re accessing it, whether the stairs need to move around the site, and what height variability you’re dealing with. This guide covers the four main types of portable stairs Northern Platforms carries, what each one is built for, and how to decide which is right for your application.

Type 1: Fixed Portable Stairs

Fixed portable stairs are prefabricated stair units designed for a set height range — typically used to provide access to a specific entry point, elevated surface, or piece of equipment that doesn’t change. Despite the name, they’re portable in the sense that they can be relocated when needed, but they’re generally positioned and left in place for extended use.

What they’re built for: Trailer and modular building access, elevated platform entry, roof access hatches, construction site office stairs, and any application where a permanent concrete or wood stair isn’t warranted but a stable, compliant access point is needed in one location.

Key specs to look for:

• Height range matching your specific application (ErectaStep fixed portable stairs are available in 7 sizes from 28″ to 63″)
• IBC, OSHA, and OH&S-compliant construction
• Field-adjustable legs for uneven surfaces — essential for outdoor and construction site applications
• Slip-resistant tread surface
• Platform size adequate for the entry point (4×6′ and 4×4′ platforms available)
• Entry configurations: direct, left, right, or multiple entry; double stair options for high-traffic access points

When it’s the right choice: You need a compliant, stable stair at a fixed location and don’t want to build or pour concrete. For temporary site trailers, construction phase access, or any elevated entry that needs to meet code without a permanent structure.

Type 2: Tilt-and-Roll Portable Stairs

Tilt-and-roll stairs are mobile stair units that can be tilted back on integrated rear wheels to move from one location to another, then set down flat for stable use. A single operator can reposition them without equipment or assistance.

What they’re built for: Warehouses, manufacturing facilities, and distribution centres where workers need to access shelving, mezzanines, or equipment at different points throughout a shift. Anywhere that a stair needs to serve multiple locations on the same floor.

Key specs to look for:

• Wheel size and material — larger wheels handle uneven or outdoor surfaces better
• Load rating on both the platform and the steps
• Handrail configuration — full-height handrails on both sides for industrial applications
• Locking mechanism when stationary — caster locks should engage quickly and hold firmly
• Step width adequate for carrying tools or equipment while ascending

When it’s the right choice: Your workers need stair access at multiple points in a facility, and repositioning needs to be fast and single-operator. A fixed stair at every location isn’t practical; a tilt-and-roll unit serves the whole area.

Type 3: Rolling Self-Levelling Stairs

Rolling self-levelling stairs take mobility a step further. These units are designed to be repositioned frequently and adjust their platform height to match varying access heights — so the same unit can serve different pieces of equipment or vehicles without reconfiguration. The RollaStep G Series is the leading example of this type: a variable-height, self-levelling stair and platform with gas spring height adjustment and a locking pin to secure the set height.

What they’re built for: Process facilities, tank farms, refineries, and maintenance operations where workers access equipment at multiple heights throughout the day. Loading areas where vehicle or equipment heights vary. Any application where a single stair unit needs to replace multiple fixed-height platforms.

Key specs to look for:

• Height adjustment range — the RollaStep G Series adjusts to accommodate a wide range of access heights
• Self-levelling step and platform mechanism — steps should automatically level at every height setting, not require manual adjustment
• Platform load rating — the G Series carries a 300 lb platform load limit
• Caster quality — 360° locking casters with no-flat construction for outdoor and uneven surfaces
• Platform size — the G Series provides a 6 square foot work surface, accommodating an operator with tools
• Non-slip tread — self-draining, aggressive tread for wet and cold weather conditions

When it’s the right choice: You’re dealing with variable access heights across your site and want one unit that handles all of them. Particularly valuable in oil and gas, chemical processing, and maintenance environments where equipment heights vary, and workers move through multiple tasks in a shift.

Type 4: Cantilever Rolling Stairs

Cantilever rolling stairs are the most specialized type of portable stair — designed for applications where the access point is above or beyond an obstacle that prevents a standard stair from getting close enough. The platform extends out beyond the base of the unit, allowing workers to get above piping, containment walls, tank berms, or vehicle rooflines without the stair base contacting the obstacle or the equipment being serviced.

The RollaStep C Series is the industry standard for this type: a counterweighted cantilever platform that extends 2’5″ beyond the base, with 360° locking swivel casters that allow precise placement around sensitive equipment.

What they’re built for: Tank truck and railcar loading and unloading access, tank hatch access in process facilities, equipment access where piping or containment prevents direct approach, and chemical or petroleum handling environments where contact with the equipment must be avoided.

Key specs to look for:

• Cantilever extension length — must reach far enough to position the operator above the access point
• Counterweight design — a properly counterweighted unit should be stable with an operator on the platform without tipping
• Caster locking — must lock securely before any operator climbs; look for total-lock casters that lock both rotation and swivel
• Platform and handrail configuration — full handrails, adequate platform depth for working with equipment or hoses
• OSHA compliance — non-negotiable for any industrial application

When it’s the right choice: You’re loading or unloading tank trucks or railcars, accessing tank hatches, or working above or around any obstacle that prevents a standard stair from approaching directly. This is the unit that replaces the improvised ladder-over-the-berm solution that no one should be using.

Portable Stairs from Northern Platforms

Northern Platforms carries the full RollaStep and ErectaStep portable stair lineup. We carry all four types above, and they are in stock and ready to ship. As an authorized distributor with nearly 30 years of experience supplying access equipment to oil and gas, construction, and industrial operations across Western Canada, our team can help you match the right unit to your specific application before you buy. Contact us today to get started!