CE Declarations of Performance

What is CE Markings?

CE marking indicates that a product conforms to legal requirements in specific European technical standards known as harmonised European Norms (‘hEN’).

It enables a product to be placed legally on the market in any European member state. However, regulatory requirements may differ from country to country. Note, this will mean Scotland, Wales and Northern Ireland in the future as the devolved administrations have responsibility for Building Regulations in their countries.

The CE marking symbol is placed on either the product, invoice or the packaging accompanying the product.

This guide is intended for manufacturers who make external windows and doors but excludes fire and smoke control windows and doors, although much of the guidance will apply in the latter.

The manufacturer is the company that brings together the frame and the glazing, i.e. a company that buys frames from one source and IGUs from another is deemed to be the manufacturer under the CPR and is therefore legally responsible for CE Marking.


The Declaration of Performance (DOP) Certificate identifies that your glazed Windows and Doors purchased from Combat Windows and Doors comply with the European Standard ‘CE’ Marking.

The Declaration of Performance (DOP) ensures complete traceability of your products from manufacture through to purchase and installation.

Please click the links on the right to view our CE declarations of performance.