A Builder’s Guide to Installing a Rooflight


As a builder, installing a rooflight can be a great way to add value and functionality to a property. Rooflights, also known as skylights, allow natural light to flood into a building, creating a brighter, more welcoming space.

Planning the Installation

Before you start, it’s important to plan the installation carefully. You’ll need to consider the size and type of rooflight, the location on the roof, and the structure of the roof itself. It’s also crucial to ensure that the installation complies with building regulations.

Choosing the Right Rooflight

There are many different types of rooflights available, from flat glass rooflights to domed polycarbonate ones. The choice will depend on the style of the building, the budget, and the specific needs of the project.

Preparing the Roof

Once you’ve chosen the rooflight, the next step is to prepare the roof. This involves creating an opening in the roof, installing a upstand (a frame that the rooflight will sit on), and ensuring that the area is watertight.

Installing the Rooflight

The rooflight can then be fitted into the upstand. It’s important to follow the manufacturer’s instructions carefully to ensure a secure fit. Once the rooflight is in place, it should be sealed to make it watertight.

Finishing Touches

After the rooflight is installed, the final step is to finish the interior. This might involve adding plasterboard and insulation around the rooflight, and then decorating to match the rest of the room.


Installing a rooflight is a straightforward process for any experienced builder. With careful planning and execution, a rooflight can transform a dark room into a bright, welcoming space filled with natural light.