The short answer
A stone tile roof costs more than the same roof in natural slate, which the cost guides put at £100 to £180 per square metre installed. Nobody publishes a reliable national range for stone tiles, because new, reclaimed and reconstituted stone differ so much. The tile itself, its weight, the extra timber work and the hand-laying all raise the price, so the honest figure comes from a survey.
Why there is no tidy national figure
Cost guides work well for products sold in volume. Concrete tiles and Spanish slate are bought in large, repeatable lots, so a typical price per square metre is easy to report. Stone tiles are different. Real Cotswold-type stone slates come from a small number of quarries, and a large share of the supply on old roofs is reclaimed, so each batch is priced on its own size, thickness and condition.
That is why the national guides we rely on do not carry a stone tile line. The nearest sourced yardstick is slate. Typical UK ranges reported by MyBuilder (2026) give natural slate a band of £100 to £180 per square metre once fitted. Welsh slate runs at the top of it and Spanish slate at the bottom. Stone sits above that band, but we will not invent a number to say by how much, and a figure from a different guide would only be someone else's guess.
Treat any single price you see online for stone roofing with suspicion unless it says which stone, new or reclaimed, and what is included. A bare figure per square metre could mean tiles only, tiles and labour, or the whole roof with scaffold, and the gap between those readings is large. Ask for the lines separately.
New, reclaimed and reconstituted stone
Three different things are sold as stone tiles, and they price differently.
- New natural stone. Cut from the quarry to order. Supply is limited, lead times can be long, and every tile is thicker and heavier than a slate.
- Reclaimed stone. Lifted from demolished or re-roofed buildings. It carries the colour and lichen of an old roof, which is why it is sought for repairs and for listed buildings. Stock is variable in size, so sorting and grading take time.
- Reconstituted stone. A cast product made to imitate stone. Bradstone's Cotswold range, for example, has a published minimum pitch of 30 degrees and a laid weight of about 84 kg per square metre. It is more predictable and usually cheaper, but it is a different material, and a conservation officer may not accept it where the original was real stone.
When a quote does not say which of these it is pricing, it cannot be compared with another quote.
Why stone costs more to lay than slate
The tile is only part of the difference. Stone is heavy, so the timbers beneath must be sound before a single tile goes on. Old rafters and purlins carrying stone for generations may have sagged, and putting them right is a cost that slate rarely brings. Moving the stone also takes more people and more time, and scaffold has to be built to take the weight of stacked tiles.
Courses of stone shrink as they climb the slope, big tiles low down and small ones high up. The roofer sorts the pile by size and lays it by eye, which is slow and skilled work. Each tile is usually pegged or nailed, and the ridge, hips and valleys are detailed by hand.
Stone is also an old-building covering, so the job often includes lead, chimney flashings and parapet or valley gutters that need attention while the roof is open. We would sooner say that openly than leave it for the final bill.
What your own price depends on
Several factors move the total more than the stone itself.
- Roof area and shape, including dormers, valleys and hips.
- Whether the old stone can be sorted and reused, and how much new or reclaimed stone is needed to make up the shortfall.
- The condition of the timbers, battens and underlay below.
- Access and scaffold, especially on a terrace or a steep site.
- Lead work, chimneys and any heritage detailing the building calls for.
If a new covering is 15 per cent or more heavier than the one it replaces, Planning Portal says approval is needed, so changing from slate to real stone can bring in building control. On a listed house, consent from B&NES has to be in place before work begins. Planning Portal's guidance also says a larger re-roof may need the insulation upgraded.
Our pages on matching stone tiles and stone tile roof repair show how a repair is priced against a full re-roof.
Cost against lifespan
Stone's higher cost is partly paid back in life. Marshalls, a firm of Oxfordshire surveyors and the one source we hold, says stone slates can easily last 100 years and that some have lasted 300, though as a single source we treat it with care. MyBuilder's 2026 guide puts natural slate at 75 to 100 years or more, against 30 to 50 for fibre-cement slate and 40 to 60 for clay plain tiles. Exposure and workmanship shift all of these, so none is a promise.
The comparison is made in our answer on slate against tiles. For any roof that is stone today, replacing it with something cheaper changes how the house looks and may not be allowed where the building is protected.
A real figure needs someone on your roof. Ours is a free survey, a written account of what the structure needs, and then a fixed price on paper, so every quote you collect describes the same job. The slate roofing service page explains how that survey runs for natural slate and stone alike.
