Slate Roof vs Tile Roof: Which Is Right for Your Home?
Most pitched roofs in the UK are covered in either natural slate or concrete or clay tile. If you are re-roofing, the choice affects the cost, the look, the weight on the structure and how long the roof lasts. Here is a straight comparison to help you decide.
Quick answer
Natural slate lasts longest (80–100+ years) and suits period and stone-built homes, but costs more and needs sound roof timbers to carry it. Concrete tile is cheaper, quicker to lay and fine for most modern homes, lasting 40–60 years. Clay tile sits between the two on cost and holds its colour for life.
Natural slate
Natural slate is a thin, dense stone that splits cleanly along the grain. Welsh and Spanish slate are the common choices. It is the traditional covering across the South Wales valleys and lasts 80 to 100 years or more — often longer than the timbers under it. Each slate is holed and either nailed or hook-fixed, so it is slower to lay and needs an experienced slater. It gives a crisp, flat, premium finish and is usually what conservation areas and older stone properties call for.
Concrete tile
Concrete tiles are moulded and interlocking, and much larger than a slate, so there are fewer per square metre and the roof goes on faster. That makes concrete the cheapest route to a sound new roof. The trade-off is lifespan — 40 to 60 years — and colour, which can fade noticeably after 15 to 20 years. It is the standard covering on post-war and modern estate housing and, for most modern homes, the sensible-value choice.
Clay tile
Clay tiles are fired from natural clay, so the colour runs through the whole tile and does not fade. They last 60 to 80 years or more and come in plain, pantile and handmade forms that suit character properties. Clay costs more than concrete but less than natural slate, and gives a warmer, more varied colour than either.
What actually decides it for most people
Three things, usually. First, matching the street — and any conservation-area or listed-building rules on materials. Second, the condition and strength of the existing rafters: a heavy natural-slate roof laid over tired timbers may need the structure strengthening first, which changes the sums. Third, budget and how long you plan to stay — if this is your forever home, the longer-lasting covering is often worth the extra.
Slate vs tile at a glance
| Covering | Lifespan | Relative cost | Best for |
|---|---|---|---|
| Natural slate | 80–100+ years | £££ | Period, stone-built and conservation-area homes |
| Clay tile | 60–80 years | ££ | Character properties wanting lasting colour |
| Concrete tile | 40–60 years | £ | Modern homes and best-value re-roofs |
| Fibre-cement / synthetic slate | 30–50 years | ££ | A slate look at lower weight and cost |
Frequently Asked Questions
Is slate better than tile?
For longevity and looks on an older property, yes. For value and speed on a modern home, concrete tile is usually the sensible choice. Both keep the weather out equally well when laid properly.
Can I put slate on a roof that currently has tiles?
Sometimes. Natural slate is heavier than some tiles and lighter than others, so the roof structure has to be checked first. We assess the rafters as part of the quote before recommending a covering.
How much more does a slate roof cost than a tiled roof?
As a rough guide, natural slate runs 30 to 60 percent more than concrete tile for the same roof, mostly in materials and labour time. See our new roof cost guide for full figures.
Do I need planning permission to change from tile to slate?
Usually not for a like-for-like re-roof, but conservation areas and listed buildings have rules on materials. Check with the council first if either applies to your property.
Related Reading
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Read moreRealistic UK costs by job type.
How long does a roof replacement take?
Read moreRealistic timescales for a re-roof.
What is roof restoration?
Read moreCleaning, resealing and refurbishing a roof.
Planning a Re-Roof?
We re-slate and re-tile roofs across the South Wales valleys in natural slate, clay and concrete — with an honest survey of the timbers first. Free written quote.