The choice of window-frame material affects a building’s annual heating costs and the level of outside noise. Selecting specific profiles and glazing units allows the entire construction to be tailored to facade requirements and site conditions.
DAKO, a Polish manufacturer based in Nowy Sącz, develops systems using three materials that differ in care requirements, permissible glazing sizes and corner-construction methods. Investors planning a thermal retrofit or a new build should consider these variables before making a final decision. Components are produced in a facility exceeding 33,000 square metres and shipped worldwide after rigorous testing of operating mechanisms.
Thermal performance and colour options – PVC Windows
PVC systems can achieve heat-transfer coefficients well below the minimum thresholds set out in building regulations. Bi-colour technology allows different colours on the exterior and interior sides. Finished PVC windows require only routine cleaning with standard household detergents, as the material does not need repainting or impregnation treatments. Hardware can be upgraded with scissor-stay tilt hinges, offering several opening angles and improving ventilation in rooms with elevated humidity.
Hand-finished craftsmanship and natural properties – Wooden Windows
Constructions made from selected pine, spruce and exotic meranti timber undergo advanced PowerFeed processing, including the precise application of three protective layers against water exposure. Final polishing is carried out by hand to remove minor imperfections and surface irregularities. Timber provides excellent thermal insulation – especially when paired with triple-glazed units filled with a noble gas. Wooden windows are often chosen for historic properties due to conservation requirements and need only periodic refreshing of the exterior protective layer.
Minimalist glass joints and durability – Aluminium Windows
Metal frames used in aluminium windows are highly resistant to impact, intense sunlight and prolonged contact with water. DAKO replaces thick corner profiles with glass joined precisely at a 90° angle; a black structural adhesive helps visually minimise the boundary, maximising daylight and the view. The exterior side is protected with toughened glass, reducing the risk of mechanical damage. The DA-90 Thermo series meets stringent passive-house standards by significantly reducing thermal bridges.
Key technical features of the offered joinery:
- Double- and triple-glazed units, with the space between panes filled with a noble gas to help stabilise indoor temperature
- External and internal glazing bars (muntins), matched to the architectural style of old townhouses or rural cottages
- Outward-opening sash systems, making it easier to furnish compact spaces where every centimetre matters
- Large-format sliding patio doors and tall fixed windows to maximise access to natural light
- CE certification as proof of thorough safety testing and compliance with environmental standards
Summary and production verification
Every component undergoes multi-stage manual inspection. Using a range of materials helps match performance to local climate and architectural design, influencing heating energy demand and long-term maintenance needs. DAKO’s in-house logistics team supervises road transport to protect profiles during international deliveries.
