Double glazing installers in Watford
25 companies have a registered office in Watford under the glazing trade (SIC code 43342).
Extract from the public Companies House register (glazing trade, SIC 43342) - not a recommendation or a vetted panel. Select a company for its full register entry and local context.
| Company | Area | Registered | Accounts filed | Details |
|---|---|---|---|---|
| Southern Aluminium And uPVC Window Company (London) LimitedLtd · Small · no. 01543278 | WD24 | 1981 | 2025 | View details → |
| A Plus Windows & Doors LimitedLtd · Large · no. 01983401 | WD18 | 1986 | 2025 | View details → |
| Harp Windows (Watford) LimitedLtd · Micro · no. 02411960 | WD18 | 1989 | 2025 | View details → |
| Glen Windows And Doors LimitedLtd · Micro · no. 02649070 | WD18 | 1991 | 2024 | View details → |
| Kingswood Specialist Glazing LimitedLtd · Small · no. 06854078 | WD25 | 2009 | 2025 | View details → |
Source: Companies House free company data - SIC 43342, active companies, with dormant and long-overdue filers removed. Company status and details can change; check the register for the current position.
How to choose between them
A whole-home job in Watford typically runs £3,400 to £10,400 (local cost factor 1.15×), so the spread between three quotes on the same brief is worth chasing. Victorian terraces around the town centre, Edwardian villas along Cassiobury Park, interwar semis in North Watford, plus modern tower blocks in the town centre.
Heritage note: Around 15 conservation areas including Cassiobury and central Watford.
Whichever company you approach: get three written, itemised quotes, confirm FENSA or CERTASS registration on the scheme's own register, check the guarantee is insurance-backed, and ask for two recent local installs you can look at. Our guide to comparing double glazing quotes walks through it.