The finest architects prefer to choose high quality, high-performance timber window systems with low U values ratings.

The Holz Schiller window system is now available in Ireland through a network of fabricators around the country.
This system is available in soft wood and hard wood and
also in a unique maintenance-free timber.
A passive haus version is also available.

For your free list of local manufacturers, call today on 01 456 5170 or email us on info@nationalseal.ie.