Installing a VELUX window is an excellent way to add natural light and ventilation to your home.

The thing is:

VELUX is one of the most well-known and respected brands of roof windows in the world, and their products offer superior quality, durability and energy efficiency.

The question is:

Can I fit a VELUX window myself?

Yes, you can! In fact, fitting a VELUX window is well within the grasp of a confident, experienced DIYer.

And at Good Build Superstore, we’re here to walk you through the steps.

Read on to find out how to install a VELIX window.


Table of contents:


Choosing the right VELUX window

VELUX GGL CK01 Centre Pivot Roof Window

Before you begin installing your shiny new VELUX window, you must select the right model for your needs.

Check this out:

VELUX windows come in a variety of sizes, shapes and features, including manual or electric operation, solar or mains power, and additional features like blinds and insect screens.

Consider the size of the opening, the pitch of the roof, and the orientation of the window when choosing a VELUX window.


How to fit a VELUX window step by step

Man installing a VELUX window

For the purposes of this guide, we’re going to use a standard centre-pivot VELUX window. Other models, like the new 2in1 roof windows have a slightly different installation process.

In order to install your VELUX window, you’ll also need a corresponding flashing kit, and insulation collar and a vapour barrier.

Once you have assembled everything, simply follow the steps below.

Step 1: Prepare the opening

Start by removing any tiles or slates from the area where you intend to fit the window. You may also need to remove any battens or underfelt if they happen to be in the way. Don’t forget to check the area for any hidden electrical wires or pipes before cutting into the roof.

Step 2: Install the frame

The VELUX window frame is the next component to install. First, apply a thick bead of sealant around the perimeter of the frame. Then, carefully slide the frame into place in the opening. Be sure to align the frame correctly and ensure that it is level and plumb.

Next, secure the frame by nailing or screwing it to the roof timbers.

Step 3: Install the flashing

The flashing is a crucial part of the VELUX window installation process, as it prevents water from entering your home.

The flashing consists of two components – the base flashing and the apron flashing. The base flashing fits under the roofing material, while the apron flashing fits over the top of the roofing material. Follow the instructions provided with your VELUX window to install the flashing correctly.

Step 4: Install the sash

The sash is the part of the VELUX window that opens and closes, allowing you to control ventilation and natural light. To install the sash, slide it into place on the frame and secure it with the provided screws.

Good Builds pro tip: Test the operation of the sash before moving on to the next step.

Step 5: Install the insulation

To ensure your VELUX window is energy efficient, you should install insulation around it. This will help to prevent heat loss and draughts.

To do so, cut the insulation to size and insert it around the window frame, ensuring that there are no gaps.

Step 6: Finish the job

Once the VELUX window is in place and insulated, you can finish the job by replacing the tiles or slates around it.

Use the tiles or slates that you removed earlier or purchase new ones that match the existing roof. Apply a bead of sealant around the flashing and apron to ensure a watertight seal.


Conclusion

VELUX GPL CK04 Top Hung Manual Roof Window

A new VELUX window can do wonders for your home, offering everything from fantastic views to improved energy efficiency.

Admittedly, the process of fitting a VELUX window requires careful planning and attention to detail. But with the right tools and materials and a can-do attitude, it’s a job that can be completed by most DIY enthusiasts.

So, now that you’re fully aware of how to install a VELUX window, there’s nothing stopping you from taking on the project with confidence.

Was this guide useful?

Thanks for rating this article.