As good as new!

Windows for renovation projects

Energy efficiency

Your old windows may still look good from the outside. However, they often lead a lot to be desired when it comes to insulation, meaning that you are literally throwing money out of the window. Rising energy costs are doing their utmost to make sure your heating bills go up and up, year in, year out. Replacing your old windows will be a decision you won't regret as the investment only takes a few years to pay off.



Burglar protection

Are your old windows secure enough? Will they withstand any attempted break-ins? The majority of break-ins have been proven to start at a window. What more reason do you need to start thinking about break-in-proof windows – before this problem affects you, too. The best safety components available for windows are the safetec inside and bonding inside systems by aluplast.



Find out more about the added value of windows

Terminology for the renovation projects

EnEV: If you are planning to make major structural changes (facade, windows, roof) during a renovation project in Germany, then you need to consider the requirements of the German EnEV (Energy Conservation Regulation). To be precise, the current EnEV must be applied if over 10% of a building (based on the surface area of the entire building) is being changed. In this case, the maximum energy consumption for a house/flat must be observed. This corresponds to a maximum U-value of 1.3 W/m²K for windows.


KfW: The funding programmes offered by KfW (a German bank specialising in development) set out a minimum target for energy efficiency. The values specified in the German EnEV (Energy Conservation Regulation) act as a reference though more funding is available for more significant improvements to a building's energy efficiency. If you are receiving funding from KfW, it is important to note that a maximum U-value of 0.95 W/m²K applies for windows. In general, walls have to be better at retaining heat than windows so that condensation collects on windows instead of the walls, where it can lead to mould (see www.kfw.de).


Passive house: Relatively speaking, not many old buildings are renovated to passive house standard at the moment, though the German government are hoping that this will become standard over the medium to long-term. In the window industry, aluplast is the only system provider to offer a narrow construction depth of just 70 mm, which is certified according to the ift (German Institute for Window Technology) passive house standard.


System recommendations for new buildings


energeto 4000 | 70 mm construction depth - For ideal heat insulation


energeto 4000 | 70 mm construction depth - For ideal heat insulation

Want to save energy? Then energeto® 4000 is the ideal answer. It is mainly used in refurbishment projects and impresses with outstanding heat insulation and slim profile views that let more light into your living room.

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energeto 5000 | 70 mm construction depth - Added safety and thermal insulation


energeto 5000 | 70 mm construction depth - Added safety and thermal insulation

Equipped with safetec inside, this window guarantees added safety. And the best thing for you? With its outstanding thermal values, it means lots of energy savings, too.

Find out more >>

IDEAL 4000 | 70 mm construction depth - Tried-and-tested stability


IDEAL 4000 | 70 mm construction depth - Tried-and-tested stability

With millions of units already installed, this system impresses with incredible, tried-and-tested stability and a wide range of designs.

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IDEAL 5000 | 70 mm construction depth - The safe renovation system


IDEAL 5000 | 70 mm construction depth - The safe renovation system

The safe renovation system with added burglary protection: safetec inside is the smart way to prevent break-ins.

Find out more >>

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