Quality customised windows and doors - buy direct and get solutions that impress.
Open the door to quality - order customised windows and doors that match your style.
Perfect windows and doors - combine energy savings and style with quality
About Nem Group
Nem Gruppen are experts in windows, doors and other building materials, customised to your needs.
We offer solutions that combine aesthetics, robustness and sustainability with energy-efficient technology, so you can find the perfect match for your home or project.
Whether you're in the middle of a renovation, building new, or simply looking to upgrade with recyclable materials, we're here to help you choose the optimal products for your construction project.

Get the best advice from Nem Gruppen
Keep up to date with the latest trends and tips on windows, doors and building materials on our webshop. Get inspiration and useful advice on maintenance, energy saving and much more - all in one place at Nem Gruppen.
Get inspiration, tips and advice directly on our webshop! At Nem Gruppen we help you choose the best windows, doors and building materials for your home. Whether you're looking for energy-saving solutions, increased security or a stylish design, you'll find everything you need with us.

Buy safely with Nem Gruppen
At Nem Gruppen you'll find a large selection of high-quality windows, doors and other reusable building materials. We offer different styles, materials and features so you can find the perfect match for your home or project.
Our experienced team is always ready to help you find the right solution for your project.


Measuring windows and doors
For example, do you need windows made to standard dimensions or customised to fit your house? Either way, we can help, as we produce in many different dimensions and deliver directly from the factory to your home.
Before you get started, you need to have the following ready: Paper and pencil, ruler/measuring tape and possibly a plumb bob, if it's an older house. You'll need to measure the height and width of the wall hole.
You will need paper, pencil and ruler or tape measure.
You need to measure on the outside. Measure in several places. If the measurements differ, use the smallest measurement.
If the ruler doesn't fit, you can measure two smaller pieces and put them together.
Now you have the hole dimensions
Then subtract 2.5 cm to find the frame measurement. There should be 1.25 cm of space on each side for insulation.
Use these measurements to order doors or windows from Nem Gruppen.
The cavity dimension is the measurement from brick to brick. The frame dimension, on the other hand, is the dimension of the door or window itself. It's important to use the cavity measurement as a starting point, as there must also be room for insulation in addition to the element. This is done by subtracting about 2.5 cm from the hole dimension.
PREFABRICATED HOUSES
We have more than
300 series projects in our archive
Using only high-quality components from well-known manufacturers in our production enables us to offer a long warranty on the load-bearing structures of the houses. The correct construction of the outer walls retains heat in winter and keeps you cool in summer.
Contact us for further questions

Do you have questions or need advice?
Our friendly customer service team is ready to help you. You can also use our contact form for a quick enquiry.
Phone number
+45 3072 5225
Email Address
info@nem-gruppen.dk
Nem Gruppen
Jørgen Ruds vej 10 4300 Holbæk, Denmark
