Koosi Ltd
Window & double glazing company registered in Hornchurch, Essex
Registered address
159A HIGH STREET, Hornchurch RM11 3YD
✓ Active on Companies House
Companies House number16311704
IncorporatedMarch 2025
1 year on the register
1 year on the register
Company typePrivate Limited Company
Trade (SIC 43320)Joinery installation (windows, doors & frames)
Accounts on fileNo accounts filed yet · next due December 2026
Also registered for16230 - Manufacture of other builders' carpentry and joinery
Listed from the public Companies House register, not an endorsement. Quote requests go to FENSA or Certass registered installers covering your postcode, not necessarily this company. Accounts filing category reflects company size under Companies House rules, not service quality. Map location is approximate, based on the registered postcode.
Before you book Koosi Ltd
This page confirms the company is on the Companies House register. It does not confirm FENSA or Certass registration, insurance, or trading status. Check those yourself first.
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Is Koosi Ltd FENSA or Certass registered?
This directory does not confirm registration. Window and door installers self-certify their work against Building Regulations through a Competent Person Scheme — mainly FENSA or Certass — so check the company name or postcode (RM11 3YD) directly on the FENSA or Certass website before booking, and ask to see the certificate number.
Should I repair or replace my windows?
Repair makes sense for a failed seal (misted double glazing), a worn handle or hinge, or a damaged lock on an otherwise sound frame — usually a straightforward swap. Replacement is the better value once frames are warped, draughty, rotten (on timber) or past roughly 20 to 25 years old, or when several units across the house have failed. Ask the installer to price both where it's borderline.
Does a listing here mean Koosi Ltd is recommended?
No. Companies appear in this directory because they are on the Companies House register under a window/joinery installation trade code. A listing is not vetting, endorsement, or a guarantee that the company is trading or FENSA/Certass registered.
How many window and glazing companies are there in Essex?
This directory holds 938 active window and glazing businesses across 78 towns in Essex, all from the Companies House register. Hornchurch accounts for 36. About 29% of Essex's registered window and glazing firms were incorporated in the last three years, so weigh incorporation date and FENSA/Certass registration, not just company age.