Scaffolding is one of the safest ways to do extended work at heights in Ireland - until it is wrong. Wrong assembly, wrong inspection, wrong inspection record, or the wrong people on it, and a scaffold becomes a 5-metre fall waiting to happen. Here is what every Irish site needs to know.
The two scaffold families on Irish sites
- Tube and fitting / system scaffold (rigid scaffold): erected by a competent scaffolder, used for extended construction. Cannot be touched, altered or moved by non-scaffolders.
- Mobile tower scaffold (often aluminium, on castors): assembled and used by trained operatives, mostly for fit-out, MEP and maintenance work.
Different competency, different inspection cycle, but the same Working at Heights duties under SI 299/2007 Part 4 Chapter 2 apply to both.
Who can erect a scaffold in Ireland
Tube-and-fitting scaffold: only a CISRS certified scaffolder. Mobile tower: any operative who has completed a recognised tower scaffold course - PASMA (Prefabricated Access Suppliers and Manufacturers Association) is the dominant standard. The Working at Heights Course sits underneath both: you cannot put a foot on a scaffold deck without it.
Inspection cycle - the law you cannot skip
- Scaffold erected, altered or dismantled - fresh inspection required
- Every 7 days while in use, inspection by a competent person
- After any event likely to affect stability (high wind, impact, frost)
- Findings recorded in writing - the scafftag system, where the green tag means "fit to use" and the red tag means "do not use".
An out-of-date scafftag is the single most common HSA Improvement Notice on construction sites in Ireland. Print, sign, date, hang.
Tower scaffold checklist - 10 items, every shift
- All four locking castors engaged and pinned
- Stabilisers extended for the working height (check manufacturer chart)
- Toeboards on all four sides of the working platform
- Top guardrail and intermediate rail on all four sides
- Trapdoor closed when in use
- Internal climb rungs, not external
- No people on tower while moving - even one metre
- No movement on uneven, sloping or wet ground
- Maximum platform load not exceeded
- Wind under 12 m/s outdoors
Common scaffolding failure modes on Irish sites
- Climbing on the outside of the tower - the second most common cause of tower scaffold falls.
- Moving the tower with people on board - prohibited everywhere, still happens.
- Wind acting like a sail - sheeting and tarpaulins triple the wind load.
- Soft ground subsiding overnight - especially after rain in autumn or after frost in winter.
- Mixing system components - different manufacturers do not interlock; this is illegal and dangerous.
Working at Heights Training and scaffold work
Every operative who steps onto a scaffold deck needs a Working at Heights Course certificate. PASMA covers the tower itself; the Working at Heights Course online covers the deck behaviour: harness use, dropped objects, edge awareness, rescue plan. Both certs together is what main contractors expect.
Scaffold rescue plan - the bit everyone forgets
If a worker is suspended in a harness from a scaffold, you have roughly 20 minutes before suspension trauma becomes serious. Every site should have:
- A pre-agreed signal to alert the rescue team
- A rescue device (descender or relief step) on site, not in a van 30 minutes away
- At least 2 named rescuers per shift, trained in their roles
- The 999 contact ready and the access point named
FAQs
Is PASMA enough or do I still need Working at Heights Training?
PASMA covers tower scaffold use. Working at Heights Training covers the broader duties. Most main contractors require both.
How tall a tower can I build without a CISRS scaffolder?
For PASMA-trained operatives the practical ceiling is around 8 metres internal / 5 metres external on a standard mobile tower, but always follow the manufacturer instruction manual on the actual model.
Do scafftags need to be physical paper tags?
Paper or laminated card with date, name, signature and "fit/not fit" status. Some companies are moving to QR-code digital tags - HSA accepts them as long as they are immediately visible at the access point.
Get your full crew certified. Start the Working at Heights Course online - 45 minutes, 35 euro, instant Working at Heights Certificate. Volume rates on the team training page.
