Question 1

Do you offer uPVC window repairs in London?

Accepted Answer

Yes. BuilderFix provides uPVC window repair services across London and Surrey. We handle faulty handles, damaged hinges, locking mechanism failures, stiff or misaligned windows, and draughts. Send us photos and a description and we can usually give you an initial estimate before visiting.

Question 2

How much does it cost to repair a uPVC window in London?

Accepted Answer

The cost depends on the fault and parts required. Minor adjustments such as realigning a sash or lubricating a mechanism typically cost less than jobs involving replacement hinges, handles, or locking systems. Contact us with photos of the problem for a same-day estimate.

Question 3

Why is my double glazed window misted up?

Accepted Answer

Misting between the panes means the sealed unit has failed — the airtight seal around the edge of the glass has broken down, allowing moisture to enter. This cannot be fixed by cleaning; the glass unit itself needs replacing. The frame is usually fine and can be kept.

Question 4

Can a misted double glazed unit be repaired without replacing the whole window?

Accepted Answer

Yes. In most cases we replace only the failed sealed glass unit, leaving the existing frame in place. This is significantly cheaper than a full window replacement. We measure and order the correct glass to match your existing specification — thickness, coating, and safety requirements.

Question 5

Can you repair a uPVC window that won't close properly?

Accepted Answer

Yes. A window that won't close is usually caused by misaligned hinges, worn friction stays, a damaged locking point, or a frame that has shifted slightly over time. We inspect the window, identify the cause, and advise whether adjustment or replacement parts are needed.

Question 6

Why is my uPVC door difficult to lock?

Accepted Answer

This is usually caused by the door dropping on its hinges — meaning the locking points no longer line up with the keeps in the frame. It can also be a sign of a worn or failing multi-point lock mechanism. Both issues are repairable without replacing the door.

Question 7

Can a draughty window be repaired without replacing it?

Accepted Answer

Often yes. Draughts are commonly caused by worn or damaged rubber seals, misalignment, or degraded weatherstripping — all of which can usually be replaced or adjusted at a fraction of the cost of a new window. We assess the source of the draught and advise accordingly.

Question 8

Do you repair window handles, hinges and locks?

Accepted Answer

Yes. We carry a wide range of replacement handles, hinges, friction stays, locking mechanisms, and espagnolette bolts. If we don't have the exact part on the van, we source it and return to complete the job — usually within a few days.

Question 9

Who repairs sash windows in West London?

Accepted Answer

BuilderFix repairs sash windows across West London including Chiswick, Brentford, Ealing, Hammersmith, Kensington, Notting Hill, Richmond, and Twickenham. We address sashes that won't stay open, heavy or stiff movement, failed weights and cords, and worn parting beads.

Question 10

How quickly can a glazier replace broken glass?

Accepted Answer

For emergency broken glass — including break-ins and accidental damage — we aim to attend within 2 hours across London. We board up or glaze on the same visit where glass is in stock. For specific glass types or sizes, we typically return within 24–48 hours with the correct unit.

Question 11

Do you offer skylight and roof window repairs?

Accepted Answer

Yes. We repair selected Velux and flat roof skylight issues including failed sealed units, faulty opening mechanisms, worn weatherseals, and flashings. Send us the model number and photos of the problem and we'll confirm what's involved before visiting.

Question 12

Do I need to replace the whole window if it is faulty?

Accepted Answer

Not necessarily. Many common window problems — misting, draughts, stiff operation, broken handles or hinges — can be resolved by replacing individual components. We only recommend full window replacement when the frame itself is failing or when the cost of repair approaches the cost of a new window.

Window & Door Repair FAQs

Your Questions Answered

Still Have Questions?