The short answer
Not always. A few loose ridge tiles on a low, easily reached roof can sometimes be dealt with from a roof ladder or a tower, but a longer ridge, a steep slope, a three-storey house or any re-bedding job usually needs scaffold. The roof itself decides, and we work out the access at the survey before a price is written.
The three ways to reach a ridge
Ridge work is done from one of three kinds of access. A roof ladder is a ladder fitted with wheels and a hook, laid up the slope so the hook sits over the ridge, giving a firm line to climb and kneel on. A tower is a small, free-standing scaffold platform built against the eaves, which lifts the ladder's starting point and gives a flat place to stand. A full scaffold runs along the eaves with boards, guard rails and a stair or ladder access, and often returns around the gable ends.
None of these is better in the abstract. A roof ladder is quick to set up and leaves nothing standing afterwards, but it only suits short, light jobs. A tower is a middle step for a modest height. A full scaffold is slower to erect and strike, and in return it gives room to carry tiles, mortar and fixings up and work with both hands free.
When a roof ladder or tower is enough
On a low house with a reachable eaves, a roof ladder can serve for something small: refixing one or two ridge tiles that have slipped, or checking a ridge from above before deciding what to do. The surface also matters. A ladder needs a sound, dry covering to bear on, and we would not lay one across brittle old tiles, moss-slick slate or stone slates whose pegs we have not yet checked.
The ridge itself matters too. A loose cap on a short run is one thing. Re-bedding a ridge, lifting the whole line, cleaning off old mortar and laying it again with fixings means carrying a lot of material along the top of the roof, and that is not a job to attempt from a ladder hooked over the crown.
Spotted ridge tiles out of line from the ground? Stay off the roof. A zoomed photograph from the garden tells us a good deal and costs you nothing.
What makes scaffold the sensible choice
Several features push a ridge job towards scaffold. A steep pitch, where nobody can stand without something to hold. A three-storey house, or a gable end on a sloping plot, where the ground drops away below the eaves. A long ridge with hips running off it, because a hip repair means working down a slope as well as along the top. A roof with a fragile covering, such as old stone slates, where weight should be spread rather than concentrated on a ladder's feet.
Valley-side houses bring their own difficulties. Terraced streets climbing a hillside can leave a back wall two storeys higher than the front, with a narrow passage or a steep garden in which to stand a tower. We note these at the survey, so the access is priced in advance and never discovered on the morning.
Where scaffold is up for another reason, the ridge can often be done at the same visit. If chimney work or a re-roof is coming, say so, and we will price the access once. Our guide to ridge, hip and verge repair costs in Stroud sets out the prices around these jobs.
What access adds to the price
On a small ridge job the scaffold can outweigh the repair itself, which is why it is worth understanding. Published national guides show the order of magnitude. MyBuilder's 2026 new roof guide puts scaffolding at about £1,125 for a full re-roof, while Checkatrade's 2026 roof replacement guide gives £700 to £1,300. Those are for a whole house, not a ridge alone, and they are typical UK ranges, not our prices.
The work on top of it is modest by comparison. Against that, MyBuilder's 2026 slate roof guide lists £300 to £600 for ridge tiles re-bedded or replaced, and its dry ridge guide gives £40 to £60 per metre. So on a short job, access can cost more than the repair, and a single scaffold put up for the ridge alone can look out of proportion to it.
That is the reason we would rather survey first than guess. The written quote covers access, tiles, fixings, labour, rubbish removal and making good. That lets you judge what the access is costing, and whether other work could share it.
How we decide, and what to send us
The survey looks at the height of the eaves, the pitch, the state of the covering, the length of the ridge and any hips, and what stands around the house: a conservatory, a lean-to, a narrow side passage, a neighbour's boundary. Photographs of your own roof are taken as we go and sent with the quote.
If the ridge has been moving, the access plan needs to account for that too. A ridge that is lifting or has sunk may be saying something about the timbers below, and whether bedded mortar is still allowed is a question that comes up at the same time, because a re-bedded ridge is now fixed mechanically as well. And once old mortar has started to fail, why ridge mortar cracks and falls out explains what is behind it.
For a first look, send photographs of the ridge from ground level, the height of the house and where the nearest safe place to stand a tower would be. If a ladder will do, we will say so. A 10-year workmanship guarantee comes with our work in writing, and the site is left clear with the rubbish taken off. Full detail on this work sits on our ridge, verge and dry-fix page.