GRP Designs

GRP Designs have been manufacturing and installing Aluminium and UPVC windows, doors and conservatories since 1988. Throughout this time we have built a reputation for the quality of our installations and the quality of products that we manufacture.

We currently operate across the East Midlands and the Home Counties, with the majority of our installations in Northamptonshire and surrounding counties. Along with our specialist aluminium fabricator and sister company Alumen Ltd, we own two manufacturing sites based in Kettering, Northamptonshire.