The British standard for slating and tiling, BS 5534, sets the fixing and underlay requirements every compliant UK re-roof must meet. — BS 5534 (British Standards Institution)
What Does a New Roof Cost in Horsham?
The honest answer is: it depends on your house. A 3-bed semi in Roffey and a Victorian detached near The Causeway are completely different jobs — different materials, different roof areas, different labour times. That said, we quote enough Horsham roofs every year to give you a realistic sense of what you should expect to pay.
| Property Type | Roof Size | Typical Cost |
|---|---|---|
| 2-bed terraced | 35–50m² | £4,500–£6,500 |
| 3-bed semi-detached | 50–70m² | £5,500–£9,000 |
| 3–4 bed detached | 70–100m² | £8,000–£13,000 |
| Large detached / complex roof | 100m²+ | £12,000–£18,000+ |
The prices above are for a complete strip-out and replacement — new underlay, battens, tiles or slate, ridge, hips and all flashings. Partial repairs are considerably less. See our repairs page for repair pricing.
What Affects the Cost of a New Roof in Horsham?
1. Roof Size and Pitch
The bigger the roof, the more materials and labour. Pitch also matters — a steeply pitched roof takes longer to work on safely and requires more material to cover the same footprint. Many Victorian properties around Denne Road and Park Street have steeper pitches than the post-war estates in Roffey and Broadbridge Heath.
2. The Roofing Material You Choose
Concrete interlocking tiles are the most cost-effective replacement material and suit most Horsham properties built after 1945. Natural Welsh slate is significantly more expensive but is the correct choice for period properties in conservation areas. Clay plain tiles sit in between. A like-for-like replacement costs less than upgrading materials.
| Material | Cost Per m² | Notes |
|---|---|---|
| Concrete interlocking tile | £45–£65/m² | Most common on post-war Horsham stock |
| Clay plain tile | £65–£90/m² | Better appearance, longer life |
| Natural Welsh slate | £80–£120/m² | Required for period properties |
| Reclaimed clay/slate | £90–£140/m² | Conservation area matching |
3. Access and Scaffolding
Every re-roof in Horsham requires scaffolding — this is non-negotiable for safe working at height and should be included in any reputable quote. Scaffolding typically adds £700–£1,500 to the total. Be wary of any quote that doesn't include it. On tight terraced streets in Horsham town centre, scaffolding may require a licence to cover the pavement, which adds a small administrative cost.
4. What They Find Underneath
The only way to know the true condition of your roof deck and rafters is to strip the tiles. On many Horsham properties — particularly the 1960s–70s estates in Roffey and Littlehaven — we find rotted felt, degraded battens and occasionally soft spots in the deck boards. A reputable contractor will include an allowance for minor timber repairs and show you anything unexpected before proceeding.
5. Additional Work: Fascias, Soffits and Guttering
A re-roof is the most economical time to replace rotted timber fascias, soffits and guttering — the scaffolding is already up and the labour overlap is minimal. Expect to add £800–£2,500 for a full fascia, soffit and guttering replacement depending on the size of the property. It's always cheaper to do it at the same time than as a separate job.
How to Read a Roof Replacement Quote
A proper written quote from a Horsham roofer should include: a clear scope of works, the materials specified by name and grade, scaffolding, disposal of old materials, any timber work, and the guarantee terms. If it's just a number on a piece of paper with no breakdown, ask for more detail before you sign anything.
- Detailed scope of works — not just "re-roof"
- Materials specified by name, type and grade
- Scaffolding included or separately itemised
- Old material disposal included
- Timber repair allowance stated
- Written guarantee duration and terms
- Company name, address and insurance details
Red Flags in Roofing Quotes
Be cautious of: quotes significantly below all others (materials have a floor price), requests for large cash deposits before work starts, no written quote at all, no evidence of insurance, and contractors who say scaffolding isn't needed. None of these are acceptable on a legitimate Horsham re-roof.
Is Now a Good Time to Re-Roof in Horsham?
Re-roofing can be done year-round in West Sussex, though most contractors prefer the spring to autumn window when dry spells are longer and predictable. Winter re-roofs happen regularly — the key is an experienced contractor who monitors weather windows and plans the strip-out accordingly. Don't delay a roof that needs replacing just because it's winter: a failing roof costs more to repair every month it's left.
What a Good Quote Should Include
A complete re-roof quote for a Horsham property should specify: the number of tiles (not just "all tiles"), the tile type and manufacturer, the batten specification, the underlay type (breathable membrane or traditional felt), the ridge and hip specification, all flashing materials and weights, scaffolding and skip costs, and the disposal method for stripped materials. Any quote that omits these specifics leaves scope for substitution of inferior materials once work begins. If you receive a quote that does not itemise materials, ask for a materials schedule before signing anything.
Payment terms are also important. A reasonable deposit for material ordering on large jobs (10–20% of contract value) is legitimate. Demands for more than 50% upfront before any work starts are not. We require a modest deposit for material ordering on re-roofs, with the balance due on completion and to your satisfaction.
Get a Free Horsham Roof Survey
We survey, specify and quote — no call-out fee, no obligation. Most surveys completed within 48 hours.
📞 Call 0140 358 1272 Roof Replacement Horsham →Last reviewed: July 2026 by Horsham Roofing Experts.