Do you need scaffolding to fit a rooflight?

What the rules actually require

The Work at Height Regulations do not say “use a scaffold”. They set out a hierarchy: avoid working at height where you can, use equipment that prevents a fall where you cannot avoid it, and use equipment that reduces the distance and consequence of a fall only where prevention is not reasonably practicable.

Applied to a rooflight, you cannot avoid the height, so the duty falls on prevention. That means a platform with a guard rail and a toe board at the working position, and it means the crew are not relying on their own balance on a sloping surface. A scaffold is the most common way of satisfying that. It is not the only one.

The other half of the duty is the roof surface itself. Battens, old tiles and any fragile covering are not walking surfaces, so crawl boards and roof ladders spread load and give a fixed line of travel.

The forms of access we use

Most pitched installations end up as a scaffold at the eaves plus a roof ladder above it, which gives a guarded platform to work from and a safe route across the covering.

What decides which one you get

Six things, all of them established at survey:

• Height to the eaves and the height of the working position above that.
• Pitch. A steep slope cannot be worked from a ladder leaned against it at all.
• Fragility of the covering. Old handmade clay and stone slate need load spread over more courses.
• Duration. A day is different from a week, and hire rates follow the period.
• Ground. What the standards will stand on and whether it is level.
• What is underneath. A conservatory, a lean-to or a public footway all change the design.

The ground is the constraint people forget

A scaffold transfers real load into whatever it stands on. Soft lawn after a wet fortnight, a manhole cover, a shallow-vaulted cellar under a pavement, a raised deck: each of those needs either sole boards spreading the load or a different standing position.

Sloping and stepped ground is common on Oxford’s older streets and is dealt with routinely with adjustable bases, but it takes longer to erect. A rear garden reachable only through the house means every board, tube and fitting is carried through, which also takes longer. Both are things worth knowing before a date is agreed.

Pavements, highways and the neighbour next door

If any part of the structure stands on the public footway or road, a licence from the highway authority is required, and in this county that is Oxfordshire County Council. Licences take time and carry conditions about lighting, guarding and the width of footway left clear.

Where the access has to stand on a neighbour’s land, that is a matter of their agreement. There is a legal route for essential works, but the sensible route is a conversation early. In a terrace, a rear slope is frequently reached over the boundary, and the neighbour saying yes in March is what allows the job to happen in April.

What access does to the date

Erecting a scaffold, doing the work and striking it are three separate visits by two different trades. The rooflight itself may be a day. The platform may be up for several, because it goes up ahead of the work and comes down after it, and both are scheduled around the scaffolder’s other jobs.

That is why the access, and not the roof work, usually sets the date on the calendar. It is also why fitting two units at once, or doing a replacement at the same time as a new opening, is so much better value: the expensive, slow part is already standing.

Who arranges it, who pays for it

We arrange it. The access is specified as part of the survey, hired in our name from firms we work with regularly, and appears as a line on the fixed price so you can see what it costs rather than finding it buried.

Where a licence is needed we apply for it. Where a neighbour’s permission is needed we will tell you at survey that it is required, because that conversation is better coming from you than from a stranger with a clipboard. If the platform has to stand longer than planned because of weather, that is our problem and not a variation on your invoice.

Living with a scaffold, and what not to do with it

It will be up for a few days. Expect noise at the start and end, some loss of light to ground-floor windows behind it, and reduced privacy where it passes a bedroom. Close and lock windows the platform passes.

Two practical points. A scaffold is an obvious aid to anyone wanting to get to an upper window, so lock upstairs windows while it is standing and tell your insurer if your policy asks you to. And do not use it yourself, however tempting the gutter looks. It is inspected and tagged for the people working from it, that tag is dated, and altering a board or a guard rail invalidates the inspection.

Fifteen years of pitched-roof installations around Oxford means the access questions are settled before the unit is ordered. The roof is opened and closed the same day, never left open overnight, and the workmanship carries a ten-year guarantee. Call 01865 704245 if you want to know what your slope is likely to need.