Entry 09 · Windows & Glazing
Checking a glazing firm online before you sign
Verify a glazing firm online before you sign: the registered company, the website domain, reviews read with care and the paperwork that follows.
Before you sign for windows or doors, you can check a glazing firm from your kitchen table in about half an hour, and the check runs in a fixed order: the registered company first, then the website and its domain, then reviews read for pattern rather than stars, and finally the paperwork the firm is willing to put in writing. A firm that survives that order with consistent names and dates has earned the next step; a firm that changes names between them has told you something too.
The website itself is a small record worth reading on its own terms. A domain has an owner history, a set of name servers and a renewal date, and Domain Host USA explains how domains, DNS and hosting records work for readers who want to know what sits behind an address in the browser bar. You do not need to run those checks yourself, but knowing they exist helps you read a website as a document rather than a shop window.
01 What does Companies House tell you?
The first check is free and public. The register at Companies House holds every UK limited company, and a search by name returns the registered office, the incorporation date, the filing history and the people behind the firm. Match the name on the quote to the name on the register exactly, because a trading name and a registered name can differ, and the difference matters when a dispute asks who actually signed your contract.
Read the filing history next. A company that files on time and has traded for years reads differently from one incorporated last spring or one with a trail of dissolved predecessors under the same directors. None of this proves quality of work, but it anchors the firm in a legal identity that a glossy van cannot supply.
02 How do you read the website and the domain?
A firm website earns trust through boring details. Look for a named legal entity on the contact page, a geographic address that matches the register, a landline or mobile that a person answers, and copy that names its coverage area honestly. A site that hides who is behind it, lists no address or borrows stock photos of a team it does not employ is telling you to keep the deposit in the bank.
The domain adds a second layer for the curious. When was it registered, does the contact email share the domain or sit on a free mailbox, and does the firm name in the browser bar match the name on the register? A brand-new domain on a firm claiming decades of trading is not proof of anything, but it is a question the office should answer without offence.
03 How should reviews be read?
Reviews pay off when you read them as a sample rather than a score. Sort by date and read the oldest and the newest, because a firm under new ownership or a changed crew shows in the trend before it shows in the average. Read the complaints first and watch how the firm answers them, because a measured reply to a bad week tells you more than a page of five stars.
Watch for the patterns that matter to this trade specifically: mentions of survey accuracy, of fitting tidiness, of faults put right without argument, and of the certificate arriving as promised. A firm whose reviewers repeatedly name the paperwork you will need is a firm that knows what the job includes.
Cross-check the names while you read. The name reviewers praise, the name on the register, the name on the quote and the name that will appear on the certificate should all be the same legal person or an explained relation of it. Each unexplained difference is a question to ask before the deposit, not after.
04 What stays offline?
Some checks still happen on paper. The FENSA registration of the installer, the insurance-backed guarantee on the written warranty and the survey sheet itself all live outside the website. The entry on certificates after fitting explains what should reach you and what to do when it does not, and the checklist before you sign keeps the order of asks in one place.
Put the online check and the paper check together and you have a complete picture: a registered company that matches the trading name, a website whose details survive contact with the register, reviews that describe the process you are buying, and paperwork that names who certifies and who returns if something fails.
Take the firm name from your newest quote tonight and run the register search. Ten minutes on the official record is worth more than an evening of star ratings.