Want to transform your attic into a spacious bedroom or bright workspace? Having a wooden dormer window installed not only creates more space, it also increases the value of your home. Curious about what is possible with a wooden dormer window? In this article you can read more about the costs, but also about all the choices involved.
What does a wooden dormer cost?
The average price of a wooden dormer is £9,900, including installation. Because wood is easy to work with, you have many style options. In addition, a wooden dormer is easy to repair, unlike, say, a plastic one. See below the average wooden dormer prices, both for a prefab or traditional installation.
| Prefab | Traditional | |
|---|---|---|
| 2.5 metres | £8,500 | £9.000 |
| 3 metres | £ 9,300 | £ 9,800 |
| 4 metres | £ 9,900 | £ 10,400 |
| 5 metres | £ 10,800 | £ 11,300 |
| 6 metres | £ 11,800 | £ 12.300 |
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Price examples
As cheap as possible
Do you want to enjoy a dormer window without spending too much money on it? Then choose a prefab wooden dormer window of 2.5 metres. This will provide one room with extra space and light for an average of £8,500.
Good value for money
Want a bit more space in the attic? Many people choose to have a 4-metre-wide dormer installed on their roof. Because of the extra windows, this provides extra light. A prefab wooden dormer will cost between £9,900.
Created on site
Do you live in an older house that is no longer perfectly straight? Or is the street in front of your house so narrow that a crane won’t fit? Then opt for a traditional dormer. This is delivered in pieces and assembled by the specialist on site. For a dormer which is 5 metres wide, you will spend an average of £ 11,300.
What choices will affect the cost of your wooden dormer?
If you have a dormer installed, the price will be determined by several choices. We will explain some of them:
Choice 1: Prefab or traditional timber dormer
The first choice to be made is how the dormer will be installed:
- Prefab timber dormer: This is the most popular choice among consumers, as the cost of a prefab dormer is lower than that of a traditional dormer. Besides, installing a prefab model takes no longer than one day as the dormer is already assembled at the factory.
- Traditional wooden dormer: In certain cases, a traditional dormer is more convenient. If the clearance for the crane is too big, for example. Or when there is no room in the street for a crane. This variant is also recommended for older houses that are not perfectly straight. Because the specialist assembles the dormer on site, it can be perfectly connected to your dormer. The installation of your dormer will therefore take several days.
Choice 2: Flat or pitched roof on the dormer
The second choice that affects the price of a wooden dormer is the finishing of the roof of the dormer.
- Flat roof: Most dormers have a flat roof and this is therefore included in the price. This option allows for few adjustments to the roof structure and is often finished with EPDM roofing.
- Sloped roof: In a dormer with a sloped roof, the tiles provide drainage for rainwater. This makes it virtually maintenance-free and has a longer lifespan than EPDM. A sloping roof does incur a surcharge.
Choice 3: Finishing
It is possible to finish a wooden dormer with plastic sheeting. Plastic is less subject to weathering and painting is not necessary. As plastic is low-maintenance, you save on maintenance costs. Wood can also be finished in various styles, for example with the help of panels.
Choice 4: Additional options
In addition to the most important choices, there are also additional options you can consider. You can have these taken care of by your dormer specialist. They will make sure the extras are installed immediately so you don’t have to worry about them anymore.
| Option | Costs | Advantages | |
|---|---|---|---|
| Ventilation grille | £ 8 – £ 12 per decimetre | – good for a healthy living environment – prevents moisture problems |
|
| Tilt and turn window | £ 125 – £ 200 each | – easy to clean – two settings: ventilate and quick-through |
|
| Insect screen | £ 75 – £ 100 each | – keeps pesky insects out – easy to install in your skylight |
|
| Roll blind/screen | £ 500 – £ 1.000 each | – sleep in complete darkness – keep out heat in summer, £40 per element |
– create extra – storage space |
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