Optiwin windows and doors offer the highest true R-value known in window construction. It’s this kind of technical quality and integrity that produces comfort you’ll feel in your toes!

Optiwin windows are handcrafted and custom designed, so they're available in any size and shape - for any residential or commercial building.

With Optiwin windows and doors, you no longer have to compromise beauty for climate control; aesthetic for energy efficiency. We deliver it all!

Optiwin key benefits:

• Unparalleled comfort

• Maintenance-free: all woods are    naturally weather resistant – no extra sealants required

• Standard, European tilt-and-turn design allows window panels to open to the inside for easier cleaning

• Minimal glues, no paints – the best option for your health and the environment

•  Best overall technological performance:

        3Wood Window min. R-Value: 7.8 (U-Value: 0.129)

       2Wood and Alu2Wood Window min. R-Value: 7.2 (U-Value: 0.139)

       3Wood Door ‘Frostkorken’ min. R-Value: 8.9 (U-Value: 0.112)