Diamond GRP Guarantee

The Diamond GRP Roofing System offers a free 25 year guarantee on all the Diamond GRP materials.


In order to obtain a guarantee certificate please download, complete and return the form and all copies of purchase invoices to On completion, your guarantee certificate will be emailed to you.

Each Diamond GRP installation must have its own fully completed guarantee form and will require all copies of purchase invoices to be provided.

Please be aware that our guarantee only covers the Diamond GRP materials that were used during installation and not the workmanship.