COST GUIDES
How much does Velux window repair cost?
Updated 09/24
By: Content Team
If something has gone wrong with your Velux window, you'll need to get it repaired quickly. But how much does Velux window repair cost? Find out in our handy cost guide.
Whether it's leaking seals or cracked glass, the most important thing to do with a damaged Velux window is to fix it. And quickly. Here's what you can expect to pay for Velux window repair cost in the UK.
Velux window repair cost
| Cost provided item | Average cost |
|---|---|
| Average Repair costs | £150 - £1,000 |
| Flashing or frame repair/ replacement | £175 - £490 |
| Replacement mechanisms | £100 - £500 |
| Seal replacement | £60 - £150 |
| Cost to remove and replace | £1,000 - £2,500 |
| Last updated: September 2024 Our costs are ballpark averages - get a local tradesperson to quote now | |
*The above costs are subject to model, size and specification
The average Velux window repair cost will usually fall between £150 - £1,000, depending on the extent of the damage.
For example, if you notice your Velux window leaking, the cost to replace the seals is £60 - £150. But if you need to replace the mechanisms, expect to budget around £100 - £500.
To repair or replace the flashing or frame around your Velux window, costs are estimated to be £175 - £490.
Other costs you might need to factor in include making good internal finishes or roof repairs.
Get in touch with a Velux window fitter in your area who can help.
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Velux window replacement cost
In some cases, the damage may be great enough that it will be more cost-effective to get a new Velux altogether.
The cost to replace Velux windows is around £1,000 - £2,500,
Bear in mind that these costs assume no access equipment, such as scaffolding, is necessary.
The cost of hiring scaffolding will depend on the height and length of the scaffolding and how long you need it. For example, the hire of scaffolding for a 2-storey semi-detached house costs around £875 per week.
We recommend getting multiple quotes so you can compare how much it is to replace Velux window cost.
Velux window glass replacement cost
If the glass in your Velux window is blown or cracked, it will need to be replaced. The good news is that Velux glass can be replaced by a professional. It’s a great alternative to buying a completely brand new unit, which can be costly.
An average cost for a window fitter to supply and install a pane of glass is around £100 for a double glazed window.
What does window glass replacement cost in 2026?
Whether it’s thanks to a heavy storm or a rogue cricket ball, many homeowners find themselves needing to replace damaged window glass. Not sure what that could cost? Read on.
FAQs
Can Velux windows be repaired?
Yes, Velux window experts can help with repairs when things go wrong.
These can include:
Replacing seals and ventilation filters
Oiling hinges and mechanisms
Reglazing cracked glass
Fixing remote controls and electrics
Soundproofing
UV filters
Repainting frames
Upgrading or replacing blinds
Find a Velux window service engineer in your area, who can diagnose and fix any repairs and issues and offer advice about the best ways to prolong the life of your window.
How much does it cost to fit a Velux window in the UK?
Depending on the size of the window, what it’s made of and where you live, you’ll be looking at somewhere between £750 and £1,750 to get a new Velux window installed where there wasn’t one previously.
Alternatively, you can expect to pay between£550 and £1,500 to get one replaced.
For more advice, check out our window fitting cost guide.
Don’t forget to factor in the cost of scaffoldingif it’s required, which will usually be between £40 and £150per day.
Can I replace a Velux window myself?
We don’t recommend installing a roof window yourself, despite what the internet says.
Velux windows are more susceptible to the elements, so proper preparation and installation are key for making sure they last.
Hire an expert in your area to ensure a safe and professional installation.
Can you replace Velux flashing?
Yes, replacing flashing without a full roof replacement is possible and can often be a cost effective solution to fix specific issues.
Velux flashing kits are designed to perfectly integrate your Velux roof window into the roofing material, so your window is completely weathertight, whatever the conditions.
Unless you have adequate roofing experience, we don't recommend tackling this job yourself as a DIY project.
Why would my Velux be leaking?
There are a number of reasons why your Velux window could be leaking.
Here are some common causes:
Window flashing installed incorrectly
Damage to roofing felt
Broken window closing mechanism
Roof leaking around Velux window
Debris accumulating over flashing
Damaged or worn-out sealant
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