
Materials.
uPVC, aluminium or wood? Finstral makes everything possible. Including combinations of different materials.

Windows provide a link between indoors and outdoors. We all use them every day without a second thought – for decades. Make sure you take the necessary time to design your windows with care and pleasure.
With Finstral, you are not designing windows for your home as a whole, but for each individual space. With an aluminium-uPVC model in the bathroom or children’s bedroom and an aluminium-wood configuration in the showpiece lounge. They nonetheless all look the same on the exterior.
FIN-Window Slim-line aluminium-aluminium window, single-sash version, colour F716 Anthracite Grey, handle series 12, 43 Stainless Steel.
FIN-Window Slim-line window, single-sash version, aluminium on exterior, colour F716 Anthracite Grey, wood on interior, colour 2X01 Natural Oak, handle series 12, 43 Stainless Steel.
FIN-Window Slim-line window Cristal, single-sash version, aluminium on exterior, colour F716 Anthracite Grey, uPVC on interior, colour 45 White satin finish, enamel colour G01 Jet Black, handle series 12, 43 Stainless Steel.
FIN-Window Slim-line window, single-sash version, aluminium on exterior, colour F716 Anthracite Grey, uPVC on interior, colour 45 White satin finish, handle series 12, 43 Stainless Steel.
Everything combinable with everything else.
Finstral offers Europe’s most comprehensive range of windows. Custom-design your ideal window by choosing from over a billion possible combinations.
Whether windows, front doors, sliding doors, glass walls, shading devices or insect screens – our comprehensive product portfolio brings everything together. Always perfectly matched to lend your home a harmonious overall look.
Three FIN-Project Slim-line aluminium-aluminium windows, single-sash version with round arch and attached glazing bars, colour 583 Sablé Anthracite aluminium special effect colour.
Single-leaf door with sidepanel, FIN-Door Step Planar-Step Planar aluminium-aluminium, colour L18 Rustic Oak coated wood decor.
FIN-Slide Slim-line lift-and-slide door with fixed light and flat threshold, aluminium on exterior, colour M744 Silk Grey matt, wood on interior, colour 1X01 Natural Spruce.
FIN-Window Slim-line and Step-line uPVC-uPVC windows, colour 45 White satin finish, some with round arches and roller shutters.
FIN-Window Slim-line casement door, single-sash version, aluminium on exterior, colour F739 Quartz Grey fine texture, uPVC on interior, colour 07 Cream White embossed, with horizontal pleated blind and vertical roller blind insect screens.
FIN-Vista aluminium-aluminium window wall.
Always long-lasting.
Finstral windows can withstand over 60,000 tilt-and-turn cycles without damage, equivalent to a 60-year service life – three times the lifespan of standard windows. Designed-in durability with high-grade materials and hardware is what sets our products apart.
Certified top-quality products and support, a pan-European customer service, also after installation, and sustainable design vouch for the long-lasting satisfaction of our customers. With no compromises.

To be perfect, a window requires best-practice installation. For this, we at Finstral recommend the two-stage installation method with mounting frame: this frame is fitted during the wet construction phase and the window only installed when all the “messy” operations have been completed. This virtually eliminates any risk of damage to the window.
Do you just want to inspect, touch and try out our products? At the Finstral Studio, you will find a wide range of windows and doors. Along with expert answers to your questions.
Windows are investments for decades. Which makes intelligent design all the more important. The diversity of design and functional options is far greater than you can imagine.

At a glance.
Apart from shaping the architecture and daylighting of your home, the decision to install new windows will also dictate its energy efficiency for decades to come. Yet, many clients underestimate the complexity of the design process – which covers everything from correct window sizing for new-builds and good-practice installation to the appropriate choice of sunshading. With Finstral, you have an expert at your side that integrates all components into a holistic concept. Not only do we guarantee maximum design freedom, we also vouch for RAL-certified installation that rigorously eliminates any risk of later damage to new-build windows, e.g. through mould.
Windows are traditionally fitted after completion of the building shell and roof, though prior to interior plastering and screed laying. To prevent any damage to the new windows, we recommend our two-stage installation method with mounting frame. This involves incorporation of the frame in the masonry at an early stage, with the finished windows only fitted at the very end during the “clean” construction phase. This virtually eliminates any risk of damage to the window.
For a new-build scheme, measurements should never be based simply on estimates or the sizes shown in drawings. Finstral tasks its own technicians or certified specialist partners to take the final detailed measurements on site. This is normally performed once the masonry has been completed and the so-called “datum line” (important reference level for flooring) has been marked out by the site supervisor. In this way, we can guarantee an inch-perfect fit for our custom-made windows.
The statutory warranty period applies. For further details, please visit: Warranties/certificates - Finstral Planner.
On a standard new-build project, the windows are already covered by the approved drawings. In case of major alterations or wholesale refurbishment, you will not normally need additional planning permission for the simple replacement of existing windows. Planning permission is, however, required for any significant changes to the size of window openings, the formation of openings in structural walls or works to listed properties.