The window frame is constructed with four layers of properly prepared wood. Deep frame profile allows the installation of “warm” pane inserts with two chambers. In turn, wood itself is a good acoustic and thermal (due to its thickness) insulator. This combination allows to obtain windows that will effectively mute unwanted outside noise and retain heat inside. When using a heat transfer coefficient, Uw 0.5 W/m2K, the whole window obtains a result of 0.7 W/ m2K, which is even less than the one recommended for very energy-saving houses. A window larger than the reference size will improve this even further.

For the production of windows, we use only high-quality wood selected from European and exotic trees.

Pine (Pinus sylvestris)) Adhesived in layers with waterproof adhesive in accordance with DIN EN 204 D4. Pine is characterized by one of the best thermal insulation parameters.
Meranti (Shorea spp) Adhesived in layers with waterproof adhesive in accordance with DIN EN 204 D4.
Oak (Quercus) Adhesived in three layers with waterproof adhesive in accordance with DIN EN 204 D4.
Spruce (Picea) Adhesived in three layers with waterproof adhesive in accordance with DIN EN 204 D4.

Wood can be dyed in many colours and hues while maintaining visible grain and natural appearance of this precious material. At the request of the customer, we paint opaque, ensuring the desired effect for interior design or façade appearance. The possibility of using different colours from the inside and outside allows for a perfect integration of the woodwork into the interior and exterior of a house.

Elements are covered with the highest quality Teknos GORI varnishes in 4-layer technology. Each layer has a specific function, e.g. closing wood pores, reducing discolouration, ensuring proper adhesion of layers, as well as mechanical and chemical resistance. This creates windows looking like new for years.

PINE with visible wood grain

 

 

 

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MERANTI with visible wood grain

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OAK with visible wood grain 

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Any covering colours from the RAL and NCS palettes for use on all types of wood

Elements of the production process

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Standard package Double-chamber thermal insulation set 4/18/4/18/4	Anti-burglar package Double-chamber set of P4 class 44.4/16/4/16/4	Acoustic package Double-chamber soundproof set 6/14/4/14/44.1 Silence

WHAT IS P4 PANE?

P4 anti-burglary panes are made of two glass panes and four layers of PVB film, which is usually 0.38 mm thick and is made of polyvinyl butyral. This type of synthetic resin is characterized by high durability and transparency, which means that while providing the glass with impact resistance it does not deteriorate the optical parameters of the glazing.

To show the degree of strength offered by P4 glazing, it is necessary to refer to the carried-out tests to assure this class: during laboratory tests, the glazing must withstand a triple impact of a ball weighing 4.11 kg dropped from a height of 9 m. In practice, this means that it will not be possible to break it even with a few-kilogram hammer. Provided P4 proves that the panes make it difficult to break in and can replace 150 mm mesh grates made of steel wire with a diameter of 10 mm.

IS IT WORTH INVESTING IN P4?

P4 glazing is more expensive than e.g. P2 safety glazing due to its construction. However, lower class provides only protection from injury in the event of a breakage and is at most a temporary barrier in the event of an intrusion attempt without preparation.

In addition, windows and doors equipped with P4 glazing can reduce the insurance premium because many insurance companies consider them to be sufficient anti-burglary protection and offer a discount of premium up to 10% after installation. So this means that the one-time cost incurred when installing windows and doors can be quickly refunded after reporting this fact to the insurer.

In order for P4 panes to fulfil their role well, the security should be supplemented with anti-burglary fittings, which will guarantee calmness, confidentiality and allow for lowering insurance premiums.

SOUNDPROOF GLAZING

If you live in a noisy city, it is worth investing in noise protection. Sound-absorbing panes in the windows are one of the methods to deal with the noise of streets, the sounds of moving trains, cars, airplanes, playing children, etc.

The acoustic properties of the window, its ability to suppress noise, significantly impact on the formation of proper, comfortable conditions for people staying in buildings. The selection of appropriate glazing is an important element to improve the sound insulation of the window. The weighted sound insulation index, Rw, is the weighted insulation indicator of insulated glasses.

This effect can be achieved using several methods:
– using at least one glass pane with a high surface weight (e.g. 6 mm or thicker glass) – in general, the greater the total thickness of the insulated glass is, the better the sound insulation is,
– using panes with different elasticity – the attenuating properties of adhesived (safety) glass are used,
– varied glass thickness; damping is improved when both sheets differ by at least 50% in thickness (e.g. 4 mm float glass + 6 mm float glass).

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The highest quality fittings hide under the beauty of nature. They ensure unchanging and comfortable operation of the mechanisms for years. Such fittings cause the use of the window comfortable even with large opening surfaces. Windows are bought for decades; therefore, special attention should be paid to the performance quality and the technical solutions used in them. The windows are not only to look beautiful, but also provide security and consistently comfortable operation. In our windows, we install the highest-class fittings of the German company, Siegenia.

Hidden fitting.

It is also possible to use invisible (internal) fittings. In this case, the key metal elements (including hinges) are hidden inside the frame and are not visible when the window is closed.

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Windows are tilted differently in summer and winter.

As one of the few producers, we offer windows with an innovative solution, i.e. a variable window tilting angle. This allows to change the standard tilting angle to a smaller “winter” one with a simple movement, thus reducing energy costs.

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Safety first.

In addition to the anti-burglar panes, at request, we use anti-theft fittings of RC1 and RC2 class that make breaking in as difficult as possible in order to provide the maximum level of security for you and your family.

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Window handles.

A beautiful door handle is like jewellery for a window. However, in addition to aesthetic values, it must be reliable, durable and safe above all. For this reason, we use door handles from the German producer, Hoppe, with the Sesustic® system and exclusive door handles from the Portuguese company, Tupai

As standard, we equip our windows with aluminium glazing beads and Aluron drainage drip caps.

The products of Aluron are subject to an anodizing process consisting in refining the aluminium surface by electrolytic production of protective oxides on it. As a result, the drip caps obtain very high corrosion resistance, while significantly increasing the mechanical resistance. Anodized profiles are available in the following colours: silver, olive, brown and gold. We offer drip caps in RAL colours for windows painted with opaque colours.

We want to provide comprehensive service; therefore, we offer external windowsills of the Aluron company. These are pressed aluminium windowsills with aluminium thickness of 2 mm (this is currently the thickest aluminium windowsill available on the market). Windowsills are available in the Classic system, distinguished by modern angular shapes and Soft line with classic rounded shapes.

Classic                                                                                          Soft line

Cross-sections of wood GERLEJ windows to be downloaded:

PASSIV 92

OPTIMAL 78

BASIC 68

GERLEJ windows and doors are proven products and enjoy great trust among our customers. We want them to serve you for years. Attractive guarantee conditions offered by us confirm these declarations.