Your Cart

80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)

80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
  • 80mm Kingspan GreenGuard GG300 R
  • Rigid XPS Insulation Kingspan Styrozone
  • Fibre-free rigid extruded polystyrene XPS
  • Insulation board with high compressive strength (stress)
  • Basements, car parks, inverted roofs and cold store flooring
Estimated delivery:
In Stock
£ 151.54
Ex VAT: £ 126.28
  • Brand: Kingspan®
  • Model: 80mm GG300
  • Weight: 9.05kg
  • Dimensions: 1,250mm x 600mm x 80mm
  • SKU: 80mm GG300
  • Product code: P1-2421
  • MPN: 80mm GG300

Options available

80mm GreenGuard GG300 XPS Insulation (Kingspan Styrofoam) is a high compressive strength 300kPa, closed cell extruded polystyrene insulation board used mainly as a high performance insulation.

Kingspan GG300 XPS Sheets 80mm x 600mm x 1250mm are resistant to the passage of water vapour, moisture and unaffected by air infiltration and the effects of freeze-thaw cycling.

80mm Kingspan Rigid Extruded Polystyrene Styrozone Insulation Sheet is an easy to handle and install non-deleterious material, an ideal solution for new build and refurbishment projects.

GreenGuard is CFC and HCFC free and is manufactured with a blowing agent that has zero ODP and low GWP and has a smooth, dense skin on both faces.

Kingspan GreenGuard® GG300 provides great thermal conductivity of 0.034 W/mK across all thicknesses from 30mm up to 150mm.

The use of Kingspan GreenGuard GG300 in thicknesses of 30, 40, 50, 60, 70, 80, 100, 120, 140 or 150mm is covered by BBA Certificate 22/6048.

Kingspan GreenGuard® should not be brought into direct contact with high temperature heat sources (maximum service temperature is 75°C).




Thickness: 80mm

Length: 1250mm

Width: 600mm

Board coverage: 0.75m²

Pack coverage: 3.75m²

Material: Extruded Polystyrene (XPS)

Thermal Conductivity: 0.034 W/mK

Thermal resistance (R-value): 2.35 m2K/W

Water vapour resistivity: 400MNs/gm

Compressive strength (stress): 300kPa

Profile: Rebated Edge


Kingspan GreenGuard GG300 Features:

 · Fully compatible with green roof systems.

 · Resistant to the passage of water vapour.

 · Unaffected by air infiltration.

 · Easy to handle and install.

 · Ideal for new build and refurbishment projects.

 · Manufactured with a blowing agent that has zero ODP and low GWP.

 · Rigid extruded polystyrene insulation with thermal conductivity as low as 0.034 W/mK.

 · High compressive stress (strength) of 300kPa to withstand vehicle loads.

 · Minimal water absorption and resistance to ground moisture penetration.


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

*Special Product - Non returnable cancelable.

Board covarage 3.75 m2
Colour Light shade of yellow
Compressive Strength 300kPa
Length 1250mm
Material Extruded Polystyrene (XPS)
Pack Coverage 3.75m2
Pack Quantity 5 boards
Profile Rebated edge
R-Value 2.35m2K/W
Thermal Conductivity 0.034 W/mK
Thickness 80mm
Water Vapour Resistivity 400MNs/gm
Weight 9.05kg
Width 600mm
Fire Classification Euroclass F
Coverage 0.75m2
Finish Smooth, dense skin on both faces
Quantity 5 sheets
Application Temperature from +5 °C to +25 °C
Shipping method Articulated Vehicle ǀ Courier
Applications Basements, car parks, inverted roofs and cold store flooring
BBA Certified Yes
ETA Notification Yes
Features High compressive stress (strength) to withstand vehicle loads
Manufacturer Kingspan GreenGuard®

Write a review

Note: HTML is not translated!
Bad Good

We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
80mm Kingspan GreenGuard GG300 XPS Insulation Sheets (3.75m²/pack)
£ 151.54