About Glassfibre Reinforced Concrete Cladding (GRC)

Promoting best practice within the Glassfibre Reinforced Concrete Cladding Industry

GRCA International Member - No 1116
About GRC

History of GRC

 
The use of fibres in order to improve construction materials dates back thousands of years, so there is nothing new in the current use of fibre reinforced building materials. GRC was introduced to the construction industry around 40 years ago and has grown in popularity since the Millennium. It had existed before this time, but it wasn’t until the 1960’s that the use of glass fibres became commercially viable.

GRC is now used widely across the globe. It is a high-tech material of choice for many leading architects. GRC is a versatile material which can be formed into almost any size and finish. It is strong and relatively low weight, with environmental benefits – making it a practical choice as a large-scale construction material.

Benefits of GRC

 
Economical – With a combination of low weight (typically 40kgs/m2 @ 15mm design thickness) and high strength, GRC reduces the demands on the foundations and structure. It is an ideal cladding material for high rise buildings.

Environmentally Sound – Being a relatively low weight material, GRC reduces CO2 emissions associated with their transportation. GRC is also recyclable. 

Flexibility in Design – GRC can be moulded into many profiles from contemporary clean lines to very complex shapes with fine details so it is suitable for both modern and historic buildings.

Fire Rated – GRC is an A1 fire rated material offering the architect - when used in conjunction with other similar fire rated materials - confidence in its performance. 

Durability –The AR (Alkaline Resistant) fibres used for reinforcement within the product is non-ferrous therefore it is not susceptible to corrosion. The material also performs well under extreme weather conditions such as freezing weather conditions and fire.

Installation – With many panels weighing around 50kg, GRC is an ideal material when working on sites with restricted access. It can be brought on to a site, moved around and installed without the need for mechanical assistance.

Key features

Flexibility in Design

GRC can be moulded into many profiles from contemporary clean lines to very complex shapes with fine details so it is suitable for both modern and historic buildings.

GRC as an A1 fire rated material offering the architect - when used in conjunction with other similar fire rated materials - confidence in its performance.

The AR (Alkaline Resistant) fibres used for reinforcement within the product is non-ferrous therefore it is not susceptible to corrosion. The material also performs well under extreme weather conditions such as freezing weather conditions and fire.

Chatsworth GRC
Chatsworth GRC
Chatsworth GRC
Production

Chatsworth produce three grades

1
Grade 8P:
Suitable for small units

Production method:
Hand placed & poured pre-mix

Characteristic LOP (MPa) = 5
Characteristic MOR (MPa) = 8

2
Grade 10P:
Suitable for units up to approximately
1.2m2 (50kg)

Production method:
Sprayed pre-mix

Characteristic LOP (MPa) = 6
Characteristic MOR (MPa) = 10

3
Grade 18P:
For larger panels

Production method:
Simultaneous spray-up

Characteristic LOP (MPa) = 7
Characteristic MOR (MPa) = 18

Chatsworth GRC will help the design team specify the correct grade for the project requirements.

Click here to download our brochure