Quantum Building Supplies


Increase the light in your home without compromising the look.

From ‘off the shelf’ to bespoke, we have roof windows available to order to suit a large variety of projects from VELUX and COXDOME.

  • Leading UK suppliers
  • After-sales service
  • A range of VELUX Roof windows kept in stock
  • Advice available to help suit your requirement

Click the below links to learn more about what would best suit you.

For further information on Windows, call us today on 01534 610500 or email sales@quantum.je

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My Account

Quantum’s FREE online account tracker gives you 24 hour access to your Quantum account and allows you to easily reference your account activity. Once signed in, you will be able to check current purchases, view previous orders, view statements and check product prices.

Please note that in order to register for an online account, you’ll need a verified NP Group credit account and account number. Download your application form today or contact us for further information.

Sign in

Sign in to Quantum’s online account tracker today and easily reference your account activity.


Register for this FREE service now and benefit from 24 hour online access to your Quantum account.

If you are experiencing any difficulties with the Quantum online account tracker, or would just like more information regarding the system, then please feel free to contact our sales department on 01534 610500 or email sales@quantum.je.