To bring natural light into the attic, the installation of a roof window may be necessary. Likewise, it provides good ventilation inside.
Among the classic, side, motorized, and projection models, the rotating one is wildly successful in the market.
Velux is one of the globally renowned brands in the design of this type of roof windows. The brand continuously offers innovative and reliable products that are among the best sellers in the market.
GGL Velux is part of this range. If you want more information about this product, we invite you to read this article.
What is a VELUX GGL?
This roof window is among the flagship products of the Velux brand. Easy to use and very practical, it opens by rotation. The sash pivots 180 °.
Thanks to this type of opening, it is possible to place accessories or furniture under the window. They do not obstruct its closing or opening.
The Velux GGL features a high-quality wood finish. It can be cleaned very easily. Its installation is child’s play. Even a weekend handyman can manage it without any problem.
If you are planning some small interior renovations, do not hesitate to install it.
Before wondering which furniture to choose for your home or which paint color for a living room, first think about acquiring it.
Moreover, there is a wide range of prices and many options for this roof window. It suits every budget.
What is the difference between VELUX GGL and GGU?
It should be noted that the Velux brand offers an infinite number of roof window models. Their common point lies in their optimal performance, superior quality finish, and great durability. Let’s discover below the difference between the Velux GGL and the GGU.
| VELUX Model | Type of Opening | Interior Finish | Recommended Use |
|---|---|---|---|
| GGL | Rotation (central pivot) | Varnished wood (solid pine) | Dry rooms (bedrooms, living rooms) |
| GGU | Rotation (central pivot) | White polyurethane shell on wood core | Humid rooms (bathrooms, kitchens) |
| GPL | Projection (top opening) | Varnished wood (solid pine) | Clear view, easy access to the outside |
Velux GGL or GGU
Whether it is Velux GGL or Velux GGU, these roof windows open by rotation. They are suitable for roof slopes between 15 and 90 °.
Let’s first talk about the Velux GGL, this wooden window is equipped with a sash that pivots 180 °. It can be easily locked with a latch.
Thanks to a secure operating bar, it can be opened without difficulty. It features a Pick & Click system and ventilation control.
As for the Velux GGU, it has the same characteristics as the GGL model. The only difference lies in their finish.
Velux GGU is equipped with a wooden core covered with white polyurethane. Thanks to this composition, it offers high resistance to temperature variations and humidity.
Velux GGL or GPL
Having just mentioned the notable properties of the Velux GGL, let’s now discuss the essentials to know about the Velux GPL.
Like the Velux GGL, it is one of the successful models of Velux. It also features a control bar ensuring continuous ventilation and its opening. Additionally, it has a wooden finish.
But unlike the GGL product, Velux GPL is a roof window with projecting opening. It is designed for roof slopes from 15 to 55 °.
What are the different sizes of VELUX?
To find the ideal size of the Velux roof window, it is important to consider the room’s area. If you want it to be well-lit and well-ventilated, determine the width and height of the product.
Velux models come in many dimensions. The minimum size includes 55 cm width by 70 cm height. As for the maximum size, it can go up to 134 cm wide by 140 cm high.
What is the standard size of a VELUX?
There are 10 standard sizes of Velux. The GGL model with size code CK01 measures, for example, 55 x 70 cm.
As for Velux GGL, GGU, GPL, GPU of CK04, they measure 55 x 98 cm. For Velux GGL, GGU, GPL, GPU with Velux size code UK08, their standard size is 78 x 118 cm. These measurements refer to the glazed surface of the window, to which is added, of course, the size of the entire frame.
Regarding width, Velux offers 4 different options: 55, 78, 114, and 134 cm. Also, you can find 5 heights such as 70, 78, 98, 118, 140 cm.
How to take the measurements of a roof window?
- Parameters to consider: It is essential to know how to take measurements. Several parameters are distinguished to determine them, such as the building’s structure and the roof slope angle.
- Measuring the grooves: To correctly measure a Velux roof window, start with the distance between the grooves. Simply use a tape measure to know the height and width in millimeters. This size is generally sufficient to place an order for a Velux model.
- Additional dimensions: If that is not the case, measure the outer size of the applied frame, the sash gap, and the opening width.
- Identifying the existing model: If you are considering replacing an old Velux roof window, refer to its identification plate. This provides information not only on the type of window but also on its size.
How to choose the size of a roof window?
As mentioned above, there are many sizes available for Velux roof windows. To find the right one, you need to refer to the size of the room in order to enjoy optimal lighting.
For a room of 2 to 3 m², choose a model of 55×78 cm. However, a window of 78×98 cm is suitable for a room of 4 to 6 m².
If your room measures between 6 and 7 m², prefer a window of 78×118 cm. As for a room of 9 to 11 m², it is suitable for a window model of 114×118 cm. For a large room of more than 11 m², only a window of 134×98 cm will do.
How to know the size of my VELUX?
Knowing the size of the Velux roof window may seem like an easy task. You just need to refer to the metal plate located in the opening of the model. It provides you with all the necessary information to determine its size.
The Velux GGL 304
This roof window can have a width of 78 cm and a height of 98 cm.
The Velux mk04
Velux offers a manual rotation window model GGL with a window dimension code MK04 of 78 cm wide and 98 cm high.
The Velux sk06
This is a GGL roof window with manual control suitable for integration into roofs with a slope from 15 ° to 90 °. This model measures 114×118 cm.
The VELUX GGL window opens by rotating around a central axis, allowing easy handling even when furniture is placed under the window. A double pull on the operating bar opens it, and it can be held in different positions thanks to a spring system. This type of opening is ideal for roofs with a medium to steep slope.
The GGL model, with its varnished wood finish, is recommended for so-called “dry” rooms such as bedrooms, living rooms, or offices. It brings a warm and natural touch to the interior. For humid rooms like kitchens or bathrooms, it is better to choose the GGU model, which is more resistant to moisture.
To clean the exterior glass surface, simply rotate the sash completely 180° and lock it in position. This allows you to have both hands free to clean with a soft cloth or chamois leather. It is recommended to use clear water or a non-abrasive cleaner. Avoid harsh chemical products and sharp objects that could damage the glass.
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