7 Signs It's Time to Replace Your Windows

Most London homeowners replace their windows reactively — after a seal fails, a frame warps, or an energy bill shocks them into action. These are the seven signs that tell you replacement is the right move, and not just an unnecessary expense.

What This Guide Covers

• Persistent condensation between the panes means the sealed unit has failed
• Draughts around the frame suggest the seal or frame itself has deteriorated
• Difficulty opening or closing — frames have warped or hardware has worn out
• Rising heating bills with single or old double glazing — time for an upgrade
• Visible damage, rot, or discolouration that cannot be repaired economically

Introduction

London homeowners face unique challenges when it comes to glazing — from period properties with sash windows in conservation areas, to modern developments requiring structural glass installations. Getting the right advice before you commit can save you significant time and money.

At BuilderFix Glazing, we have completed thousands of glazing jobs across Greater London and Surrey — from emergency repairs in Kensington and Chelsea, to bespoke walk-on glass installations in Mayfair and Belgravia. This guide is based on real experience and the questions our customers ask us most often.

Photos From the Job

What Does This Typically Cost in London?

Costs vary depending on the type and size of work, the glass specification, frame material, and access. As a general guide, always obtain a free written quote before committing — this protects you from unexpected charges.

At BuilderFix Glazing, we provide free, no-obligation written quotes for all work. Our prices are transparent and fixed before we start — no surprises on the invoice.

What to Ask When Getting a Quote

• Is the price fixed, or could it change once work starts?
• What glass specification is included?
• Are all fixings, sealants and finishing included?
• What compliance documentation will I receive?
• What happens if there is an issue after completion?