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Are your bay windows in need of some TLC due to leaks, failed seals or larger structural issues? A bay windows repair specialist can sort it.

Read on for everything you need to know about finding and hiring experienced bay window repairers covering Lauder – from bay window repair costs, common problems, and repair options, we’ve got it all ticked off.

Rather we do the searching for you? Try our quick request a quote feature and we’ll put you in touch with bay window specialists covering your local area.

How much does it cost to redo a bay window?

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That said, exactly how much you’ll pay to redo a bay window in the UK will depend on:

• Window size and shape
• Material (uPVC is usually cheaper than timber or aluminium)
• Whether it’s repair or full replacement
• Any structural work needed (such as underpinning or support poles)
• Tip: If repair costs are stacking and you’re considering a bay window replacement, our bay window cost guide helps you compare the price difference.

Landed here looking specifically for bay window roof repair? Our cost guide for that, too.

Can you replace one section of a bay window?

Yes – in many cases, you can replace just one section of a bay window. This is common when:

• One pane is cracked or misted
• A single opening sash is faulty
• One frame section has rotted or warped
• However, partial replacement only works if:
• The remaining structure is sound
• The window style and materials can be matched

A window fitter can assess whether a sectional repair is doable or cost-effective.

What are the structural problems with bay windows?

Over time, bay windows can develop structural issues because they often bear weight from above. Common problems include:

• Dropping or sagging bays
• Cracks in brickwork below the window
• Bowing frames or gaps appearing
• Failed or missing support poles

These issues shouldn’t be ignored, as they can affect both safety and insulation.

Structural repairs, or in more advanced cases, underpinning may be needed. This involves reinforcing supports or rebuilding the bay base.

How to fix a leak in a bay window

Leaks are one of the most common bay window repair issues, and luckily, a fairly straightforward fix. It usually involves:

• Resealing external joints and trims
• Repairing or replacing flashing
• Fixing damaged seals or gaskets
• Addressing failed roof coverings above the bay

In some cases, the leak isn’t the window itself but the roof or masonry around it, so a proper inspection by a bay window specialist is key.

Can windows be repaired instead of replaced?

The good news is that many bay window problems can be repaired, including:

• Misted or blown double glazing
• Failed seals or draughts
• Jammed or broken opening sections
• Minor frame damage

Replacement is usually only needed when the window is beyond repair or the structure has failed.

A repair-first approach is often cheaper and less disruptive.

Why use Checkatrade?

• Fully checked repairers covering your local area
• Insurance always listed
• Easy to compare multiple profiles
• Handy reviews from local customers
• Covered by the Checkatrade Guarantee (T&Cs apply)