A polyester dormer transforms your dusty attic into a bright, habitable space. With a dormer window you not only create a new workplace or bedroom, it also increases the value of your house. Therefore, having a polyester dormer installed always pays off. Read more about polyester dormer prices and handy choices in this article.
What does a polyester dormer cost?
The polyester dormer prices average around £8,200. The exact cost will depend on, for example, the dimensions and how you finish the dormer. See below for the average costs of a polyester dormer.
| Average costs | |
|---|---|
| 2.5 metres | £7,000 |
| 3 metres | £7,500 |
| 4 metres | £8.200 |
| 5 metres | £ 9,000 |
| 6 metres | £ 9,900 |
Polyester vs. plastic
Is a polyester dormer not the same as a plastic one? No, because a plastic dormer has a wooden basic construction, where a polyester dormer is filled with insulation foam. As a result, a polyester dormer has the highest insulation value. A polyester dormer is completely seamless and therefore only available as a prefabricated variant.
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Price examples
As cheap as possible
Are you committed to sustainability? Then a polyester dormer is the best choice. Then, to be as cheap as possible, it makes sense to do the dormer finishing yourself. Also go through the saving tips at the end of this article. The purchase of your 2.5-metre-wide dormer will then come to around £7,000.
Good value for money
Are you not a do-it-yourselfer and do you prefer to leave the finishing of a polyester dormer to a specialist? Having insulation, knee bulkhead and sidewalls installed will cost around £400. The total polyester dormer prices for a 4-metre-wide dormer then come down to an average of £8,200 to £8,500.
Luxury finishing
Would you like to have some extra options installed in addition to the dormer finishing? Think about a roller shutter, ventilation grilles or an insect screen. The dormer specialist will carry out all the work for you; from installation to a luxurious finish. The polyester dormer price will then be around £ 9,500 for a dormer of 5 metres wide.
How does the price structure of a polyester dormer look?
The dormer prices are structured as follows:
As you can see, most of the price consists of the polyester dormer itself. You can influence the amount of this price yourself. This is because the price depends on the choices you make.
What choices affect the price of your polyester dormer?
The installation of your polyester dormer window is influenced by the following three choices:
Choice 1: Flat or pitched roof on your dormer window
The first choice to be made is the finish of the roof of the dormer window:
- Flat roof: This is the most commonly chosen variant in the Netherlands and the costs for this are often included in the standard price. This is because no extra adjustments are needed when installing a polyester dormer with a flat roof. In most cases, a flat roof is finished with EPDM.
- Inclined roof: Whereas a flat-roofed dormer window can be difficult to drain, this is not the case with an inclined roof. Rainwater can drain through the tiles on your dormer. This variant is more expensive. In return, you get a polyester dormer that requires less maintenance and lasts longer.
Choice 2: Wood grain
Are you charmed by the unique look of wood? It is possible to give your polyester dormer a wood look. There are several types of cladding that cannot be distinguished from real wood. This means you can enjoy the external characteristics of wood while retaining the advantages of plastic. Painting is not necessary as this cladding is available in several colours.
Choice 3: Additional options
In addition to the main choices, there are also a number of additional options you can consider. These are best taken care of by your dormer specialist, as he can arrange a discount in many cases. You can have extra options included on your dormer quote and then make a choice whether you want them or not.
| 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 |
|
| Roller shutter/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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