Do Velux windows have to be installed by an authorised Velux installer?
A Velux window installation can transform a room, ushering in natural light and fresh air.
But with the average Velux installation cost in the UK somewhere between £750 and £1,750, this is one job you want to get right.
The good news is that you don’t need a certified Velux installer to fit a Velux window. This frees up a lot more tradespeople local to you to potentially hire.
However, you’ll want a window installer with plenty of experience in Velux window fittings. This will ensure your roof window installation is within warranty and has a top-notch finish.
Here, we share all the ‘needs to know’ to get your Velux window installation off the ground. We also offer advice on how to hire a Velux window installer near you using our free search directory below.
Understanding Velux window installation requirements
Velux windows in the UK come with a ten-year warranty. Add to that, the average lifespan is between 20-30 years, and it’s no wonder they are considered one of the UK’s most hardwearing and reliable brands for roof windows.
But here’s the thing to know:
- A Velux window warranty only applies to windows installed with the correct flashing kit
- Flashing kits are designed to integrate Velux windows into the roofing material and are integral to the quality of your Velux window installation
- Tradespeople installing a Velux window must take before-and-after pictures. This way, if the window or flashings fail, you have proof of fitting
Can any tradesperson fit Velux windows?
In theory, yes. Any tradesperson, including roofers and builders, can fit Velux windows.
However, you’ll want experienced and highly trained installers to ensure the quality of your Velux window installation and keep your warranty valid.
Your Velux window fitter should ideally be:
- Experienced in fitting Velux windows – They can fit the correct flashing kit and will be knowledgeable about the many different Velux shapes and sizes (there’s a lot!)
- FENSA-approved – This isn’t a necessity for the Velux window warranty, but checking your tradesperson is registered with a competent person scheme will give you added peace of mind
- Insured – Vital for home improvement jobs like this, where tradespeople work at height with easily breakable materials!
Do you need planning permission for a Velux window installation?
Most roof window installations are considered permitted development. This means they generally do not require planning permission from your local authorities.
However, that’s only if your roof window installation meets specific criteria. In a nutshell, your Velux windows must not:
- Protrude more than 150mm above the existing roof plane
- Exceed the highest point of the existing roof
However, things become more complicated if you live in a listed property or conservation area. An experienced Velux window installer will be happy to offer you more advice. You can also find plenty more information about whether you need planning permission in our expert guide.
Benefits of hiring a professional installer
As mentioned, you don’t need an authorised Velux installer to fit a Velux window.
However, the quality of your roof window installation will be determined by how experienced and highly-trained your installer is.
Hire wisely, and you can be sure you’re getting:
- Warranty protection – You’ll know the Velux has been installed correctly, including the vital flashing kit
- Longevity – A high-quality, leak-free installation
- Building control clearance – A professional installer will know the rules around building regulations
- Efficient and safe install
Hire an inexperienced tradesperson to install your Velux windows, or attempt to take the job on yourself, and you could end up paying additional fees or voiding your warranty.
Cost-saving tips for a Velux installation
We always recommend investing in the best materials and labour you can afford to get the best finish. However, there are still some smart ways to save on the costs, such as:
1. Shop with local merchants
Roof window installers regularly pick up Velux windows and flashing kits at a reasonably lower price than the Velux website, so keep this in mind when getting quotes.
2. Buy in bulk
If you’re installing multiple windows, you can get a discount on materials if you buy in bulk. So, careful planning at the beginning of your project could save you money in the long run.
3. Hire locally
Contact Velux window installers in your area rather than a large nationwide chain. The costs may be slightly lower.
4. Spread out the costs
Velux and many roofing companies offer flexible and low-cost financing to help spread out the costs.
Are the costs of Velux windows stacking up more than you hoped? Our Velux window alternatives expert advice guide has lots of other options.
5. Get multiple quotes
We always recommend getting at least three quotes from Velux window installers. That way, you know you’re getting a fair and competitive price for the job.
Want to do some more digging into the costs involved before requesting a quote? Our skylight installation cost guide has plenty more information.
Common Velux window installation mistakes
Ready to find Velux window installers local to you? Great. But before you do, it’s helpful to understand some of the most common pitfalls in Velux window installation.
The most common installation mistakes you’ll want to avoid include:
- Poor sealing and insulation issues – Leading to dampness, ventilation issues and potentially a voided warranty
- Incorrect flashing kit installation – A costly mistake that could also void your warranty
- Choosing the wrong window size for your roof – Remember, your Velux windows will need clearance space on either side of the roof rafters (each model has different specifications, so always check the installation guidelines)
Hire a professional installer, and installation mistakes like the above should hopefully not be an issue.
How to find a reliable Velux window installer near me
When you’re ready to get your Velux window installation off the ground, follow these simple steps to make sure you make the right hire:
- Use a professional directory
Save time by using a professional directory (like Checkatrade!).
We’re so confident in the quality of the trades on Checkatrade that if you book through us, we guarantee their work up to £1,000. Guaranteed for 12 months – Eligibility criteria and T&Cs apply.
Contact or pay a trade through Checkatrade and you’re covered by our 12-month guarantee of up to £1,000*
- Hire locally
Hire a professional installer in your area and it will be easier to see examples of their work.
We also recommend reading any online reviews from previous customers.
At Checkatrade, we check all online reviews to ensure they’re from real people and that trades meet our high standards.
We check the reviews on Checkatrade are from real people, and that trades meet our high standards.
- Compare quotes
Get at least three quotes from experienced Velux window installers who are local to you. That way, you can be sure you’re getting the best tradesperson and price for the job.
Requesting a quote with Checkatrade is easy. Just fill in our quick ‘request a quote’ form to receive quotes directly to your inbox from affordable floor repair tradespeople nearby.
Or search your postcode below to get started.
Velux window installation checklist
- You don’t need an authorised Velux installer to fit a Velux window. However, hiring someone with plenty of Velux window installation experience is highly recommended
- A Velux window warranty is only valid if you install the correct flashing kit
- Planning permission isn’t needed for the majority of Velux window installations
- The average cost of installing a Velux window is between £750 and £1,750
Frequently asked questions
Do I need a Velux-approved installer?
You don’t need an authorised Velux installer to fit a Velux window. However, you still need a tradesperson with plenty of experience in Velux window fittings to ensure you get a professional finish and keep your windows under warranty.
Can you install Velux yourself?
We don’t recommend installing a roof window yourself. You’ll want someone with plenty of experience installing Velux windows and the correct flashing kits to make sure your warranty is valid.
Do you need permission to install a Velux?
Most Velux window installations are considered permitted development. This means they generally do not require planning permission from your local authorities. However, that’s only if your roof window installation meets certain criteria. Our planning permission for Velux window advice guide has plenty more information.
How much does it cost to install a Velux window?
The average cost of installing a Velux window is between £750 and £1,750, depending on the size and spec of the window.
However, it’s important to note this is just the installation fee. Buying the Velux window and flashing kits is an additional cost. Our skylight installation cost guide has plenty more information about all the costs involved.
Can you put Velux windows in a grade 2 listed building?
You’ll most likely need planning permission to install Velux windows in a grade 2 listed building. Before contacting Velux window installers for quotes, your first port of call should be your local authorities to understand what is and isn’t permitted.
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