We manufacture windows both as easy-to-use finished products and tailor-made products according to your wishes. Our energy-efficient windows are a long-lasting choice for every Finnish home.

Choose energy-efficient windows made in Finland

We focus on the best price-quality ratio of windows, customizability and service that takes into account all your needs and wishes. We invest in domestic production, and therefore our best products boast the highest degree of domestic origin in the industry (97%). All our window models represent the most energy-efficient windows on the market.

Durable and impressive windows from Lammin

The high quality of our windows is the cornerstone of our activities. All our windows are manufactured in such a way that knots do not protrude from the frames: the inner surfaces are made of knot-free, domestic pine, which is sawn and processed in Finland. The weather resistance of our windows is top-notch and therefore they will remain neat for decades.

We are at your service before and after the installation of your windows

Get tips and help from us for choosing the right windows for you! The windows are custom-made with the colours and other details of your choice. If necessary, we will come and measure the windows on the spot so that they will fit seamlessly. We can also perform the installation of your windows. After installation, our guarantee and maintenance service will assist and support you for the entire lifecycle of the windows.

Check out our window collection

Wood-aluminum windows

Thanks to their weather resistance and maintenance-free aluminium cladding, the energy-efficient wood-aluminium windows are a perfect choice for various applications.

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Wood windows 

A wood window is the perfect choice for a home renovator appreciating individuality and style. Thanks to modern surface treatment the Lammin wood windows remain tidy for decades.

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Energy Windows

Energy Windows are a sensible choice for every home because of tightening building regulations and rising electricity prices. The Lammin Energy Windows meet future energyrequirements already today.

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Signal Window

Signal Window is the quickest and most cost-effective way to improve the coverage of a cellular network indoors. It is a completely maintenance-free window solution which does not need electricity to function. 

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Special windows

In our special window selection you will find a solution even for more unusual needs. We provide you with safe fire windows and unique design shaped windows to create a personalized look for your home.

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Window Studio 

Window Studio is a design tool that lets you choose the right model and color of the windows of your home.

Design your own windows


Financing service

If you need funding for your window and/or door purchase, it is easy to apply. Complete the application on our website, and you will get the credit decision immediately.


If necessary, we will come and measure the window and door frames on the spot. This is to ensure that the new windows and doors will fit your home perfectly.

Home delivery

We deliver the windows and doors securely directly to your site within the agreed schedule. We can also help you when you need windows and doors to your site at short notice: you will get stock products from us even in 1-2 days delivery time. 

Order just the kind of window you need

We design and manufacture the right windows just for your home. This means a tailor-made look, excellent weather resistance and the best guarantees in the industry.