Glass Reinforced Plastic (GRP), also known as fibreglass, is a popular construction material across many industries. The earliest record of glass fibres having been used was in 1880 and from here, it has progressed into what we use today. This particular material has a host of benefits to offer customers, along with some negative features that should be known too. Let’s look at these today.



GRP does not conduct electricity making it the ideal choice for areas with high electrical output. This includes on and around railways as well as during the manufacture of electrical components.

High Corrosive Resistance

Fibreglass is highly resistant to corrosion, meaning it can be used in environments that other materials can’t. This is largely due to the resins used which offer protection against a wide range of pHs.


GRP is highly durable, able to withstand general wear-and-tear alongside pressure and deterioration. This allows the products manufactured with it to have a long shelf life and maintain their pristine condition for longer.


In contrast to other construction materials, GRP is extremely affordable. Equally, as it is so hard-wearing and corrosion-resistant, it wears at a slower rate and requires less repair over time. Moulds manufactured from GRP require little in the way of remedial work throughout their working life.


There are very few negatives to GRP. However,a pattern or tool is always required to make a GRP mould from and depending on the scale and complexity, this can become costly.

This pattern is ever needed to be made once and is the property of the client so therefore can be used again later if required.

GRP moulds are one of the most popular services we offer here at 3D Pattern and Mouldmakers LTD. If you would like to discuss your project or any of the information available on our website, please get in contact.