Window & double glazing installers in Hampshire

654 companies · 74 towns & cities

Hampshire has 654 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 Hampshire homeowners are upgrading their windows

Hampshire took 771mm of rain and 30 frost days in 2025 — the freeze / thaw cycles that lift seals, warp frames and let moisture creep in behind old glazing. Across the county's 776,139 households, 78% live in a house (detached, semi or terraced) — that's a lot of Hampshire homes with 8 – 12 windows each, most fitted with early double-glazing units that are well past their sealed-argon life.

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Free quotes below from FENSA / Certass installers active in Hampshire — no obligation, most respond within 48 hours.

Rainfall771mm

Frost days30

Peak gust85.3km/h

Temp range-3.4° to 30.7°C

Households776,139

Houses (det + semi + terraced)78%

Flats18%

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

Largest towns in Hampshire

Southampton106 companies Waterlooville68 companies Fareham46 companies Portsmouth35 companies Eastleigh31 companies Woking24 companies Chichester23 companies Bognor Regis20 companies Farnborough19 companies Guildford18 companies Farnham17 companies Gosport16 companies

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All towns in Hampshire

Southampton (106)Waterlooville (68)Fareham (46)Portsmouth (35)Eastleigh (31)Woking (24)Chichester (23)Bognor Regis (20)Farnborough (19)Guildford (18)Farnham (17)Gosport (16)Winchester (14)Camberley (13)Newport (13)Romsey (13)Aldershot (11)Cranleigh (11)Lymington (11)Godalming (9)Petersfield (9)Alton (8)Hampshire (8)Southsea (7)Hayling Island (6)Bordon (5)Fleet (5)Ryde (5)Cosham (4)Hants (4)Havant (4)Yateley (4)Alresford (3)Emsworth (3)Midhurst (3)Petworth (3)Sandhurst (3)Stubbington (3)Ventnor (3)Bagshot (2)Chandler's Ford (2)Cowes (2)Durley (2)Hindhead (2)Lightwater (2)Liphook (2)Liss (2)Lyndhurst (2)Sandown (2)Surrey (2)Blackwater (1)Clanfield (1)Four Marks (1)Haslemere (1)Headbourne Worthy, (1)Hedge End, Southampton (1)Isle Of Wight (1)Itchen Abbas (1)Knaphill (1)Lake (1)Lee-on-the-solent (1)Lindford (1)Nr.chichester (1)Seaview (1)Southbourne (1)Southwick (1)Stockbridge (1)Virginia Water (1)Whiteley Bank (1)Whitley (1)Windlesham (1)Woking, Surrey (1)Woolston Southampton (1)Wootton Bridge, Ryde (1)