FIXED ROOF ACCESS · OSHA 1910.23
Roof Cat Ladder: Fixed Steel Ladder Cat Access for Safe Roof Entry
A factory-direct roof cat ladder in Q235B carbon steel or SS304 stainless. Bolt-on, code-ready, and shipped from our ISO 9001:2015 plant to 50+ countries.
FROM THE FACTORY FLOOR
Rung detail
Caged climb
Load test
Ready to ship
PRODUCT OVERVIEW
What Is a Roof Cat Ladder?
A roof cat ladder is a fixed vertical steel ladder bolted to a parapet, wall, or roof edge for routine access to rooftop plant. Buyers also search it as a "ladder cat" or simply a cat ladder; the product is the same. Rungs sit clear of the structure, so boots and gloves get full purchase on every step.
Where a cat ladder roof run climbs past 3 metres, EN ISO 14122-4 and OSHA 1910.23 call for a safety cage, a guardrail, or a fall-arrest rail. We build all three. In our shop we usually default to a back-mounted cage above 2.4 m, then ask how the hatch or parapet finishes so the top step lands flush.
Each ladder ships flat-packed with a stamped drawing, a bolt schedule, and a weld map. No middleman sits between the drawing and the welder. You order factory-direct, so the price covers steel, labour, and coating — nothing else.
Assembled roof cat ladder, hot-dip galvanized Q235B
TECHNICAL DATA
Roof Cat Ladder Specifications (Q235B / SS304)
Welded rung detail
Q235B, full-penetration fillet welds
Standard Dimensions
Stringers, rungs, and clearances follow EN ISO 14122-4. We cut to your rise on request; the figures below are our stock build.
| Parameter | Value |
|---|---|
| Material | Q235B carbon steel, or SS304 / SS316 stainless |
| Rung | Ø20 mm solid bar, 300 mm pitch, anti-slip knurl |
| Stringer | 60 × 8 mm flat or 65 × 65 mm angle |
| Working load | ≥1.5 kN point load per rung (batch-tested) |
| Coating | Hot-dip galvanized 70–85 µm to ISO 1461, or 60–80 µm powder coat |
| Safety cage | From 2.4 m rise (OSHA 1910.23) / 3.0 m (EN ISO 14122-4) |
| Standards | OSHA 1910.23, EN ISO 14122-4, BS 4211 |
| Finish options | Galvanized, powder coat, or duplex (galv + powder) |
CODE COMPLIANCE
OSHA 1910.23 & EN ISO 14122-4 Compliance
Tested before it ships
Batch tensile sampling on rung welds
OSHA 1910.23 rung geometry
300 mm rung spacing and 150 mm minimum clearance behind each rung match the U.S. fixed-ladder rule for new installs.
EN ISO 14122-4 fall protection
Cage, guardrail, or rail-and-glider fall arrest is engineered to the European standard for permanent means of access.
Verified ≥1.5 kN rung load
We pull-test sample rungs from each batch and keep the load report. Material certificates, weld reports, and test data travel with the order.
Third-party witness on request
For tendered jobs we arrange a third-party lab — SGS or TÜV, for example — to witness load and coating checks.
ISO 9001:2015 process control
Cutting, welding, and galvanizing run under our ISO 9001:2015 system, in place at the Shijiazhuang plant since 2003.
Duplex coating for coastal roofs
Hot-dip galv at 70–85 µm under a powder topcoat gives long service life on salt-air roofs. SS316 is the upgrade where wash-down is constant.
USE CASES
Where Roof Cat Ladders Get Installed
RELATED PRODUCTS
Compare Roof Access Options
FAQ
Frequently Asked Questions
Factory-Direct Roof Cat Ladder Pricing
Send your rise, roof type, and quantity. You get a stamped drawing and a factory-direct price with no middleman markup — material certificates and load-test data included.