J. L. O'rourke & Sons Limited
Window & double glazing company registered in Slough, Berkshire
Registered address
120 ALBERT STREET, Slough SL1 2AU
✓ Active on Companies House
Companies House number01015341
IncorporatedJune 1971
55 years on the register
55 years on the register
Company typePrivate Limited Company
Trade (SIC 43320)Joinery installation (windows, doors & frames)
Accounts on fileFull accounts, small-company exemption · last filed June 2025 · next due March 2027
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 J. L. O'rourke & Sons 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 Slough?
Use the "Get Free Quotes" form on this page. Your job details go to FENSA or Certass registered installers covering the SL postcode area, who contact you directly. Slough has 45 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 J. L. O'rourke & Sons 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.
Do uPVC windows need any maintenance?
Not much, but not none. Wipe the frames a few times a year, lubricate hinges and locks annually, and keep the drainage channels along the bottom of the frame clear so water can't pool and find its way inside. There is no statutory annual service like a boiler needs.
What is a FENSA or Certass certificate and why does it matter?
It's proof the window or door installation meets Building Regulations (thermal performance, safety glazing, ventilation) without a separate council building control sign-off. Without one, selling the property can mean paying for retrospective building control inspection or indemnity insurance, so keep the certificate with your house documents.
How many window and glazing companies are there in Berkshire?
This directory holds 265 active window and glazing businesses across 35 towns in Berkshire, all from the Companies House register. Slough accounts for 45, among the county's busiest. About 31% of Berkshire'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.