Do I need scaffolding, or will a ladder do?

Brief, light, low tasks suit a ladder; a day or more at height suits a tower; sustained work, heavy materials or roofline access suits a scaffold. The Work at Height Regulations 2005 require falls to be prevented where reasonably practicable, which in practice pushes most trade work onto platforms.

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The rule behind the answer

The Work at Height Regulations 2005 do not ban ladders; they require work at height to be planned, and falls prevented where reasonably practicable. In practice the judgement runs on three axes: how long the work takes, how heavy or awkward the materials are, and how high and exposed the position is. A contractor balancing on a ladder for hours with one hand on a drill fails all three. The regulations bind anyone having construction work done, and a homeowner who hires a trade has a legitimate interest in how that trade works on their roof.

Ladder, tower or scaffold: the honest split

Ladder: minutes-long, light, low tasks. Reading a meter at height, clearing a gutter blockage within easy reach, inspecting something. Nothing sustained, nothing heavy, nothing at roof level for long.
Scaffold tower (from £250): a day to a few days of hands-on work at one position: painting a gable, replacing a fascia run, fitting a camera or light. A guarded platform with both hands free.
Edge protection (from £300): short trade work at the eaves: guttering, felt and tile repairs, solar installation. The compliant guardrail without the full structure.
Full scaffold (from £600): anything sustained, anything along an elevation, anything with materials going up: rendering, repointing, roofline replacement, chimney work, re-roofs.

The jobs that always want a scaffold

Chimney repointing, flashing and removal: hours at stack height with tools and materials, see chimney scaffolding. Rendering and repointing an elevation: days of platform work along the wall. Roofline replacement: fascias, soffits and gutters along the full run. Re-roofs: strips of heavy material coming off and going on for days, usually with a temporary roof if the weather is a risk. And anything where two or more people work at height at once.

Asking the question of your trade

If you have booked a roofer, renderer or decorator, one question tells you most of what you need: how are you accessing the work? A proper answer names a tower, edge protection or a scaffold, sometimes already priced into their quote. A shrug, a ladder and confidence is your cue to get the access priced properly: the cost guide has the figures, and the quote form takes two minutes.

Frequently asked questions

Is it illegal to work off a ladder?

Not illegal for brief, light, low-risk tasks. But for sustained work, heavy materials or anything at roof level, the Work at Height Regulations effectively require a proper platform, and a contractor working unsafely on your property is a risk you have chosen to host.

When does a tower stop being enough?

When the work runs along an elevation rather than at one spot, when materials need staging at height, when several people work together, or when the height passes what an alloy tower safely reaches.

Do I need scaffolding to clean gutters?

For a typical two-storey house, usually not: a tower or a proper gutter-vacuum from the ground handles it. Sustained gutter replacement along a full run is where edge protection or a scaffold earns its keep.

Who is responsible if a worker falls from my roof?

The contractor carries the primary duty, but the investigation that follows a fall reaches everyone involved in arranging the work. Insisting on proper access protects you as well as them.