Velux Rooflight Dimensions for Different Roof Types

Velux rooflights come in various sizes to fit different roof types, making it essential to choose the right one for your home.

For hip roofs, Velux offers a range of rooflights with a width of up to 1.8 meters and a length of up to 3.5 meters.

In contrast, flat roofs require a different approach, with Velux offering a range of rooflights that are specifically designed for this type of roof, with a width of up to 1.2 meters and a length of up to 2.5 meters.

The size of your Velux rooflight will also depend on the size of the opening in your roof, which is typically determined by the size of the rafters and the type of roofing material used.

Measuring for a skylight replacement is crucial to get the right size. To start, look for the VELUX brand identification tag on the skylight, which can be found in various locations depending on the type of skylight.

If you can't find an ID tag, check for the VELTERM number printed on the spacer bar separating the glass panes. This will give you the product information you need to proceed.

For deck-mounted VELUX skylights, measure the exterior glass pane length and width from the inside edge of the cladding. Be sure to measure the drywall groove as well, as the newest VELUX models have a slightly different design.

For curb-mounted VELUX or non-VELUX skylights, measure the length and width of the outside curb, including the curb and any roofing membrane material, and the outside glass length and width from the inside edge of the skylight cladding.

To ensure you get the right size, it's essential to measure the skylight carefully. Here are the specific measurements you'll need to take for each type of skylight:

After taking your measurements, contact VELUX customer service for assistance in selecting the optimal skylight size for your replacement job.

There are several types of roofs that can benefit from Velux rooflights, including flat roofs and pitched roofs.

A flat roof is a popular choice for modern homes, and it's ideal for Velux rooflights because of their sleek and minimalist design.

Pitched roofs, on the other hand, are suitable for traditional homes and can be paired with Velux rooflights to bring in natural light and ventilation.

Flat roofs are a common sight in many industrial and commercial buildings, and they require special attention when it comes to windows.

Our windows for flat roofs come in many different shapes and sizes, ranging from flat glass rooflights to curved glass rooflights.

The unique curved-shaped glass top of these windows allows rainwater to easily drain off the surface, even on 0° roof pitches.

All our roof windows are weatherproof, and with double or triple glazing, you greatly enhance the insulation and minimise the noise coming from outside in case of heavy weather or traffic.

You can choose from pre-defined variants or build your own window from pre-selected features and sizes.

Flat roofs can be found in uninhabited rooms or buildings, such as warehouses, industrial buildings, sheds, and garages, where domes with or without glazing are a great option.

Pitched roof skylights are a great way to bring natural light into your home. They're designed to fit into pitched roof constructions, which means they're a perfect fit for homes with sloping roofs.

The Velux skylight range includes a 550 x 700 size option, which has an overall frame dimension of 550 mm x 700 mm. This size is ideal for smaller rooms or areas where a more subtle amount of natural light is desired.

In Australia, standard skylight sizes are based on the metric system and are listed by width and height in millimeters. One of the most common sizes is 900mm x 600mm.

If you have a pitched roof, you'll want to consider installing a pitched roof skylight. Velux offers a variety of models, including the VS, VSS, VSE, and FS models, each with its own unique features.

The 550 x 700 size is available for pitched roof skylights, with an overall frame dimension of width - 550 mm x height 700 mm. This size skylight is designed to fit into a pitched roof construction.

To measure for a skylight replacement, you'll need to determine the type of skylight you have. Look for the VELUX brand identification tag, which can be found on the inside frame of deck-mounted VELUX skylights, stamped on one of the four exterior sides of curb-mounted VELUX skylights, or inside the ventilation flap of VELUX roof windows.

If you can't find an ID tag, look for the VELTERM number printed on the spacer bar separating the glass panes. Measuring the old skylight is also important to ensure you order the replacement size that fits best.

Here are the measurements you'll need to take for different types of skylights:

Once you have your measurements, it's best to contact VELUX customer service for assistance in selecting the optimal skylight size.

A typical roof is made up of several layers, including the underlayment, insulation, and roofing material.

The most common types of roofs are gable, hip, and flat roofs. Gable roofs are the most common type and have two sloping sides that meet at a ridge.

Most homes have a roof that is designed to last for 20 to 30 years, depending on the materials used.

You'll need to consider the slope of your roof when choosing a rooflight type, as it will decide if you need a pitched rooflight or a flat roof window.

A pitched rooflight is suitable for roofs with a slope, while a flat roof window is better suited for flat roofs.

The type of rooflight you choose will depend on the slope of your roof, which is a crucial factor to consider.

There are different types of rooflights available, each designed for specific roof constructions. A fixed, non-opening rooflight is a good option for areas where no ventilation is required.

In terms of size, Velux skylights are available in various dimensions, including 550 x 980 mm, 550 x 1180 mm, 550 x 1400 mm, and 550 x 1800 mm. These sizes are designed to fit into pitched roof constructions.

The type of rooflight operation can also vary, with options including manual, solar, and electric. For example, the CO4 size is available in manual, solar, and electric options.

Here are some common types of rooflights:

The type of rooflight you choose will depend on your specific needs and preferences.

Flat Roof Skylights are designed to fit seamlessly into flat roof constructions, allowing natural light to pour in. They're available in various sizes, including the 460 x 870 size, which is perfect for larger spaces.

You can choose from a range of Velux skylights, each with its unique features and benefits. These skylights are designed to provide excellent ventilation and natural light, making them ideal for homes, offices, and commercial spaces.

One of the benefits of flat roof skylights is that they're weatherproof, keeping the elements out and the warmth in. With double or triple glazing, you can minimize noise from outside, even in heavy weather or traffic.

Flat glass rooflights are a popular choice for flat roofs, offering a sleek and modern look. They're also curved-shaped, allowing rainwater to easily drain off the surface – even on 0° roof pitches.

For larger spaces or industrial buildings, domes without glazing are a great option for installation. They can be used in uninhabited rooms or buildings such as warehouses, sheds, and garages.

Sun Tunnels are a type of rooflight that can be installed in a way that allows natural light to enter a room from a specific direction, creating a sunbeam.

They are often used in homes and buildings with limited roof space, where a larger skylight may not be feasible.

Sun Tunnels can be installed with a reflective material such as aluminum or PVC to increase the amount of light that enters the room.

This type of rooflight is also known as a solar tube or sun pipe.

Sun Tunnels are a great option for homes with limited roof access, making them a practical choice for many homeowners.

VELUX rooflights come in a variety of sizes, and understanding the code system can be helpful when trying to identify the correct dimensions.

The code system refers to the external window frame, not the internal aperture in the roof.

You can find the code on the VELUX window itself, usually located on the frame or on the packaging.

The code can be a combination of letters and numbers, such as CKO2 or MO4.

Here's a breakdown of some common VELUX window sizes and their corresponding codes: