The Two Most Common Roofing Materials in Horsham
Horsham's housing stock spans from Victorian clay tile properties in the town centre to 1960s–90s concrete tile estates in Roffey and Broadbridge Heath. The two materials serve different property types — and choosing the wrong one is both a practical and aesthetic mistake.
The Head-to-Head Comparison
| Factor | Concrete Tile | Natural Welsh Slate |
|---|---|---|
| Typical lifespan | 40–60 years | 80–150 years |
| Material cost per m² | £15–£25 | £40–£70 |
| Full re-roof (3-bed semi) | £6,000–£9,000 | £9,000–£14,000 |
| Maintenance requirement | Ridge mortar, nail check at 40yrs | Nail fixings at 80–100yrs |
| Appearance (period property) | Inappropriate | Correct |
| Weight | 45–60 kg/m² | 25–40 kg/m² |
| Conservation area | Usually refused | Approved |
Which Is Right for Your Horsham Property?
Victorian and Edwardian Properties (pre-1920)
Natural slate or clay plain tile is the correct specification. Concrete interlocking tile is inappropriate in appearance and would typically be refused in Horsham's conservation areas. If the existing roof has natural Welsh slate, replace like-for-like. If it has clay plain tile, replace like-for-like or upgrade to natural slate where budget allows.
1930s–50s Properties
Original material is usually plain concrete or early clay tile. Modern clay interlocking tile is the best re-roofing specification — it matches the era's aesthetic while providing better longevity than concrete. Natural slate is visually over-specified for most 1930s Horsham properties.
1960s–90s Estate Properties
Concrete interlocking tile is the original and appropriate material. When re-roofing, modern concrete interlocking tile or modern clay interlocking tile are both correct. The aesthetic difference is minimal; modern clay has better long-term surface stability.
The Long-Term Economics
Over a 30-year ownership horizon, the economics of natural slate versus concrete tile on Horsham period properties often favour slate. Concrete tile requires ridge re-bedding at 20–25 years (£400–£900) and full re-roofing at 40–60 years. Natural slate requires nail replacement or re-slating at 80–100 years. On a Victorian property, a natural slate roof installed today will outlast the current owner's tenure — the next owners will benefit from the investment. A concrete tile roof installed today will require re-roofing within the ownership period of anyone buying the property now.
The counter-argument applies to properties where the long-term economics are less clear — 1960s semis and post-war bungalows where modern clay interlocking tile at £7,000–£10,000 performs correctly and is visually appropriate. Specifying natural slate on a 1970s estate property adds cost without adding value.
Sourcing Matching Tile for Repairs
The single most common challenge on Horsham period properties is sourcing matching tile for repairs. Victorian clay plain tiles were made in regional kilns using local clay — the colour, texture and profile vary between manufacturers, between batches from the same manufacturer, and between different firing temperatures. Modern clay plain tiles are close but not identical. Reclaimed tiles from the same era and region are the best match. We source reclaimed tile from specialist salvage networks and confirm the visual match before ordering. We do not substitute a close-but-visible-mismatch tile without explicit discussion — the wrong tile on a front slope is visible from the street and reduces the property's character.
Repointing — The Ongoing Maintenance Difference
Both concrete tile and natural slate require ridge and hip mortar maintenance, but at different intervals. Concrete tile ridge mortar typically needs repointing at 20–25 years due to thermal movement cracking and OPC carbonation. Natural slate ridge mortar — where hydraulic lime is specified correctly — is more flexible and typically lasts 40–60 years before attention is needed. Over a 100-year period, a natural slate roof requires one ridge repointing cycle compared to three or four on a concrete tile roof. This maintenance difference is part of the long-term economics that make slate genuinely cheaper over a full building lifetime on appropriate properties.
Getting the Work Done in Horsham
All surveys in Horsham are free with no call-out fee. We attend within 3–5 working days for planned surveys and aim to reach emergency call-outs within 2–4 hours. Every job receives a written, itemised, fixed-price quote before any work starts — no verbal estimates and no bills that exceed the accepted written quote.
We are NFRC registered and carry £5 million public liability insurance. All work carries a written 10-year workmanship guarantee backed by a named, verifiable local contractor. Guarantee and insurance documentation is provided on request before any survey visit.
We cover Horsham and the surrounding West Sussex area including Roffey, Broadbridge Heath, Southwater, Billingshurst, Pulborough, Storrington, Henfield, Crawley, Burgess Hill, Haywards Heath, East Grinstead and Worthing. Call 0140 358 1272 to arrange a free survey.
Last reviewed: July 2026 by Horsham Roofing Experts.