- Where the windows or door sets are supplied unglazed
- Where the building work is exempt from complying with Building Regulations – ie the property is Listed or there are special instructions from the Conservation Officer
- Where the design is ‘bespoke’ and unique only to a single building project
For each CE marked product there is a corresponding DoP document which contains prescribed product data that allows for clear comparisons to be made between similar products. This also contains information about thermal transmittance or U-values. These DoP documents are available to download from this website or can be obtained from us upon request.
Call us on 01273 814870 for information on our replacement windows & external door or patio sets