A full re-roof on a standard 3-bed Worthing semi costs £5,500–£9,000 in clay interlocking tile or £7,000–£12,000 in Welsh slate in 2025. Detached properties start at £7,500 and flat roofs from £800. Coastal specification materials add modest cost but significantly extend working life. Free survey — call 01903 905 128.
Re-roofing is one of the larger maintenance costs a homeowner faces, and in Worthing's coastal environment it comes around sooner than it would inland. This guide gives realistic 2025 price ranges for common roofing work across the BN postcode area, explains what drives costs up or down, and helps you understand whether the quote you have received represents fair value.
Full Re-Roof Costs in Worthing — 2025
Standard 3-Bed Semi-Detached
The most common re-roofing job in Worthing. The price range reflects material choice, batten and felt condition (always replaced in a quality re-roof), lead work scope and roof geometry.
- Clay interlocking tile: £5,500–£9,000 — including new breathable membrane, new treated batten, all lead flashings and ridge
- Welsh slate (Victorian or Edwardian): £7,000–£12,000 — sourced Welsh blue slate, appropriate fixings, lime mortar ridge on period properties
- Concrete interlocking tile: £5,000–£8,000 — we do not recommend this for coastal Worthing properties where clay outperforms concrete significantly
Detached Properties (Hipped Roof)
The hipped geometry on many Worthing detached properties — particularly the 1930s–1950s stock in Goring-by-Sea and West Worthing — adds to cost through additional hip lead, hip tile work and the extra valley junctions that hips create.
- Clay interlocking, detached: £7,500–£13,000
- Welsh slate, detached: £9,000–£16,000
- Bungalow (smaller roof area): £4,500–£7,500
What's Always Included in Our Re-Roof Price
New breathable membrane (replacing original felt), pressure-treated new batten, ring-shank stainless steel tile fixings, new Code 4 lead on all flashings and valleys, flexible coastal ridge mortar, and complete debris removal. No additions at completion unless unforeseen structural damage is found and agreed before proceeding.
NFRC guidance notes that a full re-roof should always include replacement of underlay and battens, not just the tile covering — an item cheaper quotes frequently omit.
Source: NFRC guidance
Repair Costs in Worthing — 2025
- Single tile or slate replacement: £150–£280
- Up to 10 tiles replaced: £250–£500
- Lead chimney flashing repair: £250–£600
- Full chimney lead replacement: £400–£700
- Valley lead replacement: £350–£800
- Ridge repoint (per metre): £60–£90
- Emergency make-safe attendance: £150–£350
Flat Roofing Costs in Worthing — 2025
- Garage flat roof (GRP): £800–£1,600
- Extension up to 15m² (GRP): £1,200–£2,400
- Extension 15–30m² (GRP): £2,200–£4,000
- Felt flat roof repair: £250–£700
GRP fibreglass is our standard specification for all Worthing flat roofing. Felt systems last 8–12 years in coastal conditions versus 40–50 years for GRP. The additional upfront cost of GRP typically breaks even within 10–15 years through eliminated replacement cycles.
What Drives Re-Roofing Costs Up or Down
Factors That Increase Cost
- Hipped roof geometry — more lead, more valley and hip tile work
- Rotten batten or timber that needs replacing before new tile can be fixed
- Complex chimney stack requiring extensive lead work
- Scaffold complexity — extended reveals, difficult access, party wall considerations
- Heritage materials — Welsh slate sourced to match existing, handmade clay tile
- Conservation area requirements — lime mortar, planning applications
Factors That Reduce Cost
- Simple gabled geometry — no hips, no complex valleys
- Sound existing batten and timber — reduces scope
- Single-occupancy scaffold — no highway obstruction charges
- Accessible property — level approach, no extended scaffold runs
The only way to get a reliable price for your specific Worthing property is a direct inspection followed by a written, itemised quote. We carry out free surveys across the BN postcode area and provide a full written quote within 24 hours of the inspection. Call 01903 905 128.
Frequently Asked Questions
A standard 3-bed semi in Worthing costs £5,500–£9,000 in clay interlocking tile, £7,000–£12,000 in Welsh slate. Larger detached properties from £7,500. Flat roofs from £800 for a garage to £4,000 for a large extension. Free survey — call 01903 905 128.
Coastal specification materials (stainless steel fixings, Code 4+ lead, coastal mortar additives, higher-spec flat roofing systems) add to material costs. This is not a coastal premium charged by contractors — it reflects the genuine specification difference required for coastal durability.
On a standard 3-bed semi, approximately £500–£900 more. Over the life of the roof, clay is consistently the better financial decision — 80–100 year design life versus 40–60 for concrete, with significantly better coastal performance.
Hipped roof geometry (more lead and hip tile work), original felt and batten replacement (always included in good quotes), lead work scope, scaffold complexity, debris disposal, and material specification. A lower quote that excludes these elements is not comparable to one that includes them.
Last reviewed: 20 July 2026 by Worthing Roofing Experts.
About the author
Worthing Roofing Experts — local roofing specialists serving Worthing and the West Sussex coast since 2003. NFRC registered, fully insured. Call 01903 905 128 for a free quote.