Slate, concrete tile, and EPDM rubber are the three materials we get asked about most often on Bristol homes — and each one suits a different type of property. Here’s how they actually compare, without the sales pitch.
Natural slate
Slate is the traditional choice on Bristol’s Victorian and Edwardian terraces, and in conservation areas it’s often the only option planning will accept for a like-for-like re-roof. It’s durable — a well-laid slate roof can last well over a century — but it’s also the most expensive material up front, and repairs need someone who actually knows how to work with it, since individual slates crack and need replacing rather than patching.
Best for: period terraces in areas like Bedminster, Redland or Clifton, especially where planning rules apply.
Concrete tile
Concrete interlocking tiles are the standard choice for post-war semis and estate housing across Bristol — think Brislington, Filton, Kingswood. They’re more affordable than slate, widely available (so repairs and matching are straightforward), and perform well for 30–50 years with basic maintenance. They’re heavier than slate, so the existing roof structure needs to be able to take the load, which matters if you’re switching materials during a re-roof rather than matching what’s already there.
Best for: semis and detached houses without conservation restrictions, where cost-effectiveness matters more than period accuracy.
EPDM rubber (flat roofs)
EPDM isn’t a pitched-roof alternative to slate or tile — it’s the standard modern choice for flat roofs on extensions, garages and dormers. Compared to older felt roofing, EPDM is more resistant to UV degradation and cracking, installs as a single membrane with fewer seams (fewer places for leaks to start), and typically comes with material guarantees up to 20 years. If you’ve got an ageing felt flat roof that’s starting to bubble or crack, EPDM is usually the like-for-like upgrade worth asking about.
Best for: flat-roof extensions and outbuildings anywhere in Bristol — material choice here isn’t really about area, it’s about roof type.
So which one is right for your house?
In practice, the decision is usually made for you by three things: what’s there already, whether the property is in a conservation area, and the pitch of the roof. Flat sections need EPDM (or an equivalent membrane) regardless of what the rest of the house looks like. Pitched roofs on period properties in conservation areas will generally need to match the existing slate. Pitched roofs on non-listed post-war housing have more flexibility, and the choice often comes down to budget versus longevity.
If you’re not sure which category your property falls into, it’s worth checking the GOV.UK planning permission guidance before assuming you have a free choice of materials.
A note on cost
For a rough sense of how these materials compare on price, see our 2026 roof cost guide. As a general rule, slate costs the most per square metre, concrete tile sits in the middle, and EPDM is the most cost-effective option for flat sections — though none of that matters much if planning rules or structural load rule an option out.
Not sure what your roof needs? Get in touch and we’ll give you a straight recommendation based on what’s actually there, not what’s easiest to sell.