CE Marking

What is CE marking?
The CE mark is a guarantee for the consumer that the product in question complies with the essential requirements of the relevant European harmonised standard, and can therefore be legally placed on the market.

CE marking has long been mandatory on products such as toys and electronics, but more recently these harmonised standards have been set for certain construction materials.

Changes to the Construction Products Directive – 1st July 2013
On 1st July 2013, the Construction Products Directive (CPD) became the Construction Products Regulations (CPR), making it compulsory for all glazed windows, external doors and patio doorsets to be CE marked.

All John Watson factory glazed windows, patios and external doors carry the CE mark in line with these requirements.

What does this mean to a consumer?
All CE marked products have their product data supplied in a prescribed “Declaration of Performance” (DoP) format, allowing for clear and easy comparisons to be made between similar products and ensuring the customer can make an informed decision.

The DoP provides key information relating to the products performance that has been independently tested and verified by an EU notified body.


All John Watson DoPs will be stored on our website and available to access and download in PDF format.


John Watson, Usworth Road Industrial Estate, Belle Vue Way, Hartlepool TS25 1JZ