Bertrand Windows and Doors



SOFTLINE and SOFTLINE XL windows. Classic solutions, modern form and natural beauty of wood - these are the most important features of Softline windows. Thanks to rounded edges and gentle shapes, we have given our windows an aesthetic design while maintaining very good technical parameters.


0.83 W/(m²K)


200 Pa

Resistance to wind load

1200 – 2000 Pa

Number of seal levels


Installation depth

68mm / 78mm XL

  1. System depth 68/XL-78 mm
  2. A wide range of wood species
  3. Double or triple glazing
  4. 2 seal lines
  5. Rounded shapes
Wooden windows effectively mute noise, increasing comfort inside the building
Windows regulate air humidity in rooms by absorbing and releasing it
The windows are made of natural, renewable material.

Softline has excellent thermal insulation properties. This is influenced by: the structure of the wood (porous and fibrous), the shape and thickness of the window profile (68/78 XL mm), the system of structural notches, and the profiled seal placed between the sash and the frame. Thanks to this, the interior of your house is perfectly protected against rain, wind, pollution and noise, while maintaining optimal ventilation of the rooms.

The window profiles are made of 3- and 4-layer glued scantlings. This is currently the best way to eliminate the wood defect of warping due to changing humidity conditions. The boards are connected in such a way that the internal stresses occurring in the wood cancel each other out and the profile remains straight. Before gluing, they are subjected to drying processes (optimal for a given type of wood) and impregnation (anti-fungal and anti-mold) in order to increase the durability of the final product

We offer the option of equipping windows with additional elements that beautify their appearance, such as divisions, arches, stained glass, carved elements, and handles in various shapes and colors.


Product SOFTLINE comes in the following versions


The window sash has rounded edges, it is the basic version of the window in this system.


We have placed an additional aluminum cover on the outer edge of the sash, which protects this part of the window against solar radiation and rainwater.


The outside of the window sash and the glazing bead have a decorative milling, making the window look more elegant and subtle.

ask about the product

If you have any questions about the SOFTLINE product or are interested in cooperation, do not hesitate - fill out our contact form.