Window & double glazing installers in East Sussex

407 companies · 66 towns & cities

East Sussex has 407 active window and glazing businesses on the Companies House register. Choose a town below to see the companies listed there, or request free quotes from FENSA or Certass registered installers covering your postcode.

Why East Sussex homeowners are upgrading their windows

East Sussex took 764mm of rain and 11 frost days in 2025. Those freeze / thaw cycles lift seals, warp frames and let moisture creep in behind older glazing. Across the county's 361,521 households, 67% live in a house (detached, semi or terraced). That's a lot of East Sussex homes with 8 to 12 windows each, plenty of them still on early double-glazing units well past their useful life.

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Free quotes below from FENSA / Certass installers active in East Sussex. No obligation. Most respond within 48 hours.

Rainfall764mm

Frost days11

Peak gust101.5km/h

Temp range-4.5° to 26.4°C

Households361,521

Houses (det + semi + terraced)67%

Flats19.9%

Weather: Open-Meteo historical archive, 2025 daily readings for East Sussex.Housing: ONS Census 2021 (tables TS041 households, TS044 accommodation type), aggregated across East Sussex's local authorities.

Largest towns in East Sussex

Brighton48 companies Ashford31 companies Worthing28 companies Hove25 companies Tunbridge Wells21 companies Sevenoaks19 companies Eastbourne16 companies Polegate16 companies Tonbridge15 companies Hailsham13 companies Rye10 companies Hastings9 companies

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All towns in East Sussex

Brighton (48)Ashford (31)Worthing (28)Hove (25)Tunbridge Wells (21)Sevenoaks (19)Eastbourne (16)Polegate (16)Tonbridge (15)Hailsham (13)Rye (10)Hastings (9)Lancing (9)Westerham (9)Bexhill On Sea (8)Lewes (7)Tenterden (7)Uckfield (7)Battle (6)Cranbrook (6)Kent (6)Littlehampton (6)Crowborough (5)East Sussex (5)Heathfield (5)West Sussex (5)Bexhill (4)Newhaven (4)Arundel (3)Biggin Hill (3)Seaford (3)Shoreham-by-sea (3)Wadhurst (3)Angmering (2)East Peckham (2)Edenbridge (2)Henfield (2)Hurstpierpoint (2)Mayfield (2)Peacehaven (2)Robertsbridge (2)Steyning (2)Bethersden (1)Brighton Marina (1)East Preston (1)Etchingham (1)Ferring (1)Hassocks (1)Hove East Sussex (1)Isfield (1)Leigh (1)New Romney (1)Northbourne Road, Eastbourne (1)Nr Henfield (1)Nutley, Uckfield (1)Paddock Wood (1)Pembury (1)Pevensey (1)Romney Marsh (1)Rustington (1)Saltdean (1)Southwick (1)St. Leonards-on-sea (1)Sundridge (1)Weald (1)Wrotham Heath (1)