Sybil Group Limited
Window & double glazing company registered in Brentwood, Essex
Registered address
THE MIMOSA HOUSE WEALD ROAD, SOUTH WEALD, Brentwood CM14 5QS
✓ Active on Companies House
Companies House number13923648
IncorporatedFebruary 2022
4 years on the register
4 years on the register
Company typePrivate Limited Company
Trade (SIC 43320)Joinery installation (windows, doors & frames)
Accounts on fileMicro-entity accounts (smallest filing band) · last filed February 2026 · next due November 2027
Also registered for43310 - Plastering; 43330 - Floor and wall covering
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 Sybil Group Limited
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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How do I get a quote from a window installer in Brentwood?
Use the "Get Free Quotes" form on this page. Your job details go to FENSA or Certass registered installers covering the CM postcode area, who contact you directly. Brentwood has 39 registered window and glazing businesses in this directory, though the installers who quote are not necessarily among them. It is free and there is no obligation.
What does this page tell me about Sybil Group Limited?
The registered company name, registered office address, Companies House number and incorporation date, all taken from the public Companies House register. It does not include reviews, prices, staff details, or confirmation that the company is currently trading.
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.
Is new double glazing covered by a warranty?
uPVC frames typically carry a 10 year manufacturer or insurance-backed guarantee, and sealed glazed units are usually guaranteed separately for 5 to 10 years against misting. Register the guarantee after installation and keep the FENSA or Certass certificate — a buyer's solicitor will ask for it if you sell the property.