If your skylight is getting old or leaky, it might be time for a replacement! Read our guide on how to replace a skylight, as well as tips on when it’s likely to need replacing and how to choose a new one.
Want to skip ahead? Go to instructions on how to replace a skylight.
Your skylight will need replacing after 10-15 years. Signs that it needs replacing include leaks, condensation, cracks on the glass or discolouration.
Your skylight might need replacing if:
If your skylight’s glass is damaged, you should replace or repair it as soon as possible as it could break and pose a danger to people using the space.
At Dakea, our skylights come with a 5 year guarantee, and our roof windows with a 20 year guarantee. Roof windows are for occupied rooms such as loft bedrooms, bathrooms or living spaces. While skylights are for unoccupied rooms like garages or storage lofts.
You should replace a skylight when reroofing if the skylight is old or damaged. If you’re likely to need to replace it in the near future, it can save you money to do it at the same time as replacing your roof.
When choosing a replacement skylight, you should first consider whether a skylight or roof window is more suitable for your requirements.
If you’re looking for a window for an occupied room, you should select a roof window instead of a skylight.
Skylights are ideal for providing light and ventilation to unoccupied rooms such as storage lofts and garages, but they don’t have the insulative qualities needed for occupied rooms.
Roof windows, on the other hand, are designed to help provide light, ventilation and insulation to rooms that are used as living spaces.
When choosing a roof window or skylight, consider which of the following are important:
If you want your roof window to be highly insulative for sound and heat, it is likely to be more expensive. Depending on your budget, you might want to discuss with your supplier which skylight or roof window best balances your priorities.
The average cost to replace an existing skylight is roughly £500. The skylight itself will cost £160 – £300, depending on size (or more if you’re looking for a roof window), plus the cost of installation.
However, it can depend a lot on whether you’re also replacing the roof. If you replace the roof and the skylight at the same time, the cost of replacing the skylight is likely to be less than doing the two things separately.
View the Dakea’s skylight prices by size.
To replace a skylight as a homeowner, you should talk to a professional roofing contractor or window installer. This will ensure the window is installed correctly, preventing leaks. If you’re a professional, read our step-by-step guide below.
You shouldn’t replace a skylight yourself unless you have significant roofing experience. It can be easy to get wrong, leading to leaks and potential damage to your home.
These are instructions on how to install a Dakea skylight. If you’re installing a different skylight, the instructions might also be applicable, but we recommend consulting the manufacturer’s guide. If you’re replacing a roof window, our guide on installing a roof window might be more helpful!
It will depend on whether the roof is also being replaced as to the exact way to remove the old skylight. Use the following as a guide, but it may need adjusting depending on other roof work.
Be sure to re-screw all the fixtures into their new positions, then close the window securely.
Ensure that all the roof tiles are replaced. Cut any tiles to the correct size as needed.