Send message
Ask a question
Pricing/Quote
List of suppliers/where can I buy
Sample request
I have read and agree to the terms and conditions of usage and The Building Centre's Privacy Policy. Your request will be sent and shared to the selected manufacturers you submit a request to.

Find products

Use our product finder to search for products and materials

Subscribe to our newsletter to receive news about events and exhibitions, innovation and materials on the latest building product innovations, case studies and more.
I have read and agree to the terms and conditions of usage and The Building Centre's Privacy Policy.

Extruded polystyrene insulation

Kingspan GreenGuard GG300 is a high performance rigid extruded polystyrene insulation.

It offers thermal conductivity as low as 0.034 W/m·K, and is used to insulate inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring.

Product information


Thermal conductivity (thickness of insulation)

0.034 W/m·K (30 - 150 mm)
0.036 W/m·K (> 150 mm)

Compressive strength 

300 kPa (at 10% compression) 

Core 

Kingspan GreenGuard GG300 is a high performance rigid extruded polystyrene insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP)

Board size

1.25 x 0.6 metres (rebated)  

Find products