Dalgan windows

At Dalgan Windows we produce and install all our windows to an International Quality Standard (ISO 9002) both for the commercial builder and the private homeowner. Our highly trained manufacturing staff ensures market-leading designs using the latest industry technology. We are constantly striving to improve the processes we use to manufacture our windows, doors and stairs. We have numerous accreditations for our products, with our latest achievement being certified under the NSAI Window Energy Performance(WEP) certification Scheme for our Ultratherm range of windows.