Insulation Board

Browse our range of Insulated Plasterboard from Celotex, Kingspan, Ecotherm, Quinntherm or Fibran to name just a few. Use the sidebar to narrow down the options. Whether its XPS, Polystyrene or rigid foam board, we are here to provide expert advice if necessary. Don't be a stranger, call us on 020 3582 6399 or chat with us Live Chat - Read Our Guide.

Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Celotex GA4000 General Purpose PIR Insulation Board 50mm to 100mm 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
from £13.85 £16.62
Sale price
from £13.85 £16.62
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£0.00
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Celotex 50mm GA4050 2.4m x 1.2m
50mm Celotex GA4050 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£20.15 £24.18
Sale price
£20.15 £24.18
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£0.00
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Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex
100mm Celotex GA4100 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£36.10 £43.32
Sale price
£36.10 £43.32
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£0.00
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25mm Celotex TB4025 2.4m x 1.2m
25mm Celotex TB4025 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£13.85 £16.62
Sale price
£13.85 £16.62
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£0.00
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75mm Celotex GA4075 2.4m x 1.2m
75mm Celotex GA4075 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£30.31 £36.37
Sale price
£30.31 £36.37
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£0.00
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Celotex TB4000 Thermal Bridging Board 1.2m x 2.4m - 25mm to 40mm
Celotex TB4000 Thermal Bridging Board 1.2m x 2.4m - 25mm to 40mm Floor Insulation
Vendor
Celotex
Regular price
from £13.85 £16.62
Sale price
from £13.85 £16.62
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£0.00
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Celotex PL4000 Insulated Plasterboard (All Sizes) 2.4m x 1.2m
Celotex PL4000 Insulated Plasterboard (All Sizes) 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
from £36.60 £43.92
Sale price
from £36.60 £43.92
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£0.00
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120mm Celotex XR4120 2.4m x 1.2m
120mm Celotex XR4120 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£45.23 £54.28
Sale price
£45.23 £54.28
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£0.00
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Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm Loft Insulation
Vendor
Celotex
Regular price
from £45.23 £54.28
Sale price
from £45.23 £54.28
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£0.00
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40mm Celotex TB4040 2.4m x 1.2m
40mm Celotex TB4040 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£18.77 £22.52
Sale price
£18.77 £22.52
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£0.00
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EPS 70 (All Sizes) 2400mm x 1200mm
EPS 70 (All Sizes) 2400mm x 1200mm Floor Insulation
Vendor
Insulation4Less
Regular price
from £62.83 £75.40
Sale price
from £62.83 £75.40
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£0.00
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70mm Celotex GA4070 2.4m x 1.2m
70mm Celotex GA4070 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£28.58 £34.30
Sale price
£28.58 £34.30
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£0.00
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150mm Celotex XR4150 2.4m X 1.2m
150mm Celotex XR4150 2.4m X 1.2m Floor Insulation
Vendor
Celotex
Regular price
£55.99 £67.19
Sale price
£55.99 £67.19
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£0.00
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60mm Celotex GA4060 2.4m x 1.2m
60mm Celotex GA4060 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£24.60 £29.52
Sale price
£24.60 £29.52
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£0.00
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Recticel Eurothane GP (2.4m x 1.2m) All Sizes
Recticel Eurothane GP (2.4m x 1.2m) All Sizes Insulation
Vendor
Recticel
Regular price
from £14.50 £17.40
Sale price
from £14.50 £17.40
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£0.00
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30mm Celotex TB4030 2.4m x 1.2m
30mm Celotex TB4030 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£16.27 £19.52
Sale price
£16.27 £19.52
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£0.00
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Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m Floor Insulation
Vendor
Kingspan
Regular price
from £123.55 £148.26
Sale price
from £123.55 £148.26
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£0.00
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Gyproc ThermaLine Basic Insulation 1.2m x 2.4m (All Sizes)
Gyproc ThermaLine Basic Insulation 1.2m x 2.4m (All Sizes) Wall Insulation
Vendor
British Gypsum
Regular price
from £24.31 £29.17
Sale price
from £24.31 £29.17
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£0.00
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Mannok Insulation Board 1.2m x 2.4m (All Sizes)
Mannok Insulation Board 1.2m x 2.4m (All Sizes) Floor Insulation
Vendor
Mannok
Regular price
from £23.16 £27.79
Sale price
from £23.16 £27.79
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£0.00
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80mm Celotex GA4080 2.4m x 1.2m
80mm Celotex GA4080 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£33.99 £40.79
Sale price
£33.99 £40.79
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£0.00
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Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m
Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m Loft Insulation
Vendor
Kingspan
Regular price
from £123.55 £148.26
Sale price
from £123.55 £148.26
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£0.00
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Celotex PL4050 62.5mm 2.4m x 1.2m
Celotex PL4050 62.5mm 2.4m x 1.2m Wall Insulation
Vendor
Celotex
Regular price
£49.15 £58.98
Sale price
£49.15 £58.98
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£0.00
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Kingspan Thermaroof TR27 Flat Roof Board - All Sizes
Kingspan Thermaroof TR27 Flat Roof Board - All Sizes All Insulation
Vendor
Kingspan
Regular price
from £64.40 £77.28
Sale price
from £64.40 £77.28
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£0.00
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Danosa Danopren TR XPS Insulation 600mm x 1250mm - All Sizes
Danosa Danopren TR XPS Insulation 600mm x 1250mm - All Sizes Floor Insulation
Vendor
Danosa
Regular price
from £35.20 £42.24
Sale price
from £35.20 £42.24
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£0.00
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Warmline XPS Insulated Plasterboard 1.2m x 2.4m - All Sizes
Warmline XPS Insulated Plasterboard 1.2m x 2.4m - All Sizes Loft Insulation
Vendor
Warmline
Regular price
from £31.82 £38.18
Sale price
from £31.82 £38.18
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£0.00
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Celotex PL4040 52.5mm 2.4m x 1.2m
Celotex PL4040 52.5mm 2.4m x 1.2m Wall Insulation
Vendor
Celotex
Regular price
£44.15 £52.98
Sale price
£44.15 £52.98
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£0.00
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Kingspan Thermawall TW55 Steel/Timber Framing Board (All Sizes) 2.4m x 1.2m
Kingspan Thermawall TW55 Steel/Timber Framing Board (All Sizes) 2.4m x 1.2m Wall Insulation
Vendor
Kingspan
Regular price
from £123.55 £148.26
Sale price
from £123.55 £148.26
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£0.00
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per 
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Greenguard GG300 1.25m x 0.6m - All Sizes
Greenguard GG300 1.25m x 0.6m - All Sizes Wall Insulation
Vendor
Kingspan
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
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£0.00
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Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm
Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm All Insulation
Vendor
Kingspan
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
Regular price
£0.00
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Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm
Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm Floor Insulation
Vendor
Kingspan
Regular price
from £242.94 £291.53
Sale price
from £242.94 £291.53
Regular price
£0.00
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Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm - All Sizes
Kingspan Thermawall TW50 Cavity Wall Board 450mm x 1200mm - All Sizes Cavity wall Insulation
Vendor
Kingspan
Regular price
from £51.00 £61.20
Sale price
from £51.00 £61.20
Regular price
£0.00
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Warmline PIR Insulated Plasterboard 1.2m x 2.4m - All Sizes
Warmline PIR Insulated Plasterboard 1.2m x 2.4m - All Sizes Loft Insulation
Vendor
Warmline
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
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£0.00
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Buyer’s Guide to Insulation Board

Insulation board is an all-rounder product used in almost every part of a building, whether it's roofs, walls, or floors. It's a thin product that doesn't compromise on its insulation properties. The boards are faced with different materials such as paper, bitumen, glass fleece, or plasterboard, but it's more likely you will come across foil backed insulation (boards faced with aluminium foil).

What is Insulation Board?

A board with insulation on it (board), is known as the insulation board. Rigid panel insulation also referred to as continuous insulation, can be made from foam plastics such as polyurethane (PUR), polyisocyanurate (PIR), and polystyrene, or from fibrous materials like fibreglass, rock wool.

Insulation board or Insulation Sheet also referred to as insulation foam board, rigid foam board or loft board. Foam Board are simple and easy to install and provide extra insulation inside your home.

Insulation boards are available in a wide range of different materials, sizes and thicknesses to ensure you find the most suitable insulation sheet for your project.

Benefits of using Insulation Panels:

Foam Board provides reliable and long-term energy-saving solution for buildings, which ultimately results in low-cost electricity and heating bills. It is suitable in numerous applications such as roof, floor and walls. It achieves the required U-values with minimum thickness. It also helps in meeting the current as well as future requirements of the Building Regulations. Other benefits of insulation board are as follows:

  1. The obvious benefits are of course the savings on your energy bills and the impact on your quality of living.
  2. The insulation boards do not need to be applied in a thick layer in order to insulate well. This is space-saving.
  3. Insulation board are simple and easy to install
  4. Features a good reaction to fire when measured in accordance with new European standards
  5. Comes in conveniently sized boards for installation between cavity wall ties
  6. A very cost-effective insulation
  7. Very strong product that will not break easily
  8. Easy to install and handle
  9. Keeps performing long after it is installed for many many years
  10. Lightweight product and easy to unload off a truck

From Kingspan to Celotex, all the leading brands offer a large range of insulation foam boards. With so many options, it can be tricky when it comes to choosing the best thermal insulation board for your project. In order to help you make the right decision, we will give you an overview of what's available on the market.

We will cover the following subjects:

  • Insulation board material
  • Facing options
  • Where can you install an insulation board

What are the Different Types of Insulation Boards available?

There are many types of cheap insulation board for sale. Some of the most popular types include the following:

PIR insulation foam board

Polyisocyanurate Insulation Board

What are the Examples of PIR board

Rigid phenolic insulation

What is Rigid phenolic Insulation?

  • Phenolic insulation is a rigid foam insulation board sandwiched by two flexible layers
  • It is more efficient and has lower U values than the PIR boards for the same level of thickness
  • It is popular in low energy design such as passive house due to its low thickness and meets the Building Regulation standards

Polystyrene boards

Extruded polystyrene (XPS)

  • Used for specialist applications
  • XPS is strong when compressed under load
  • This is mostly for specialist applications like in car parks and commercial floors but can be applied to more general applications. You can find XPS on a plywood frame for instance.

Expanded Polystyrene(EPS) Foam Insulation

  • EPS insulation board are used for specialist applications
  • EPS is a good and inexpensive insulator.
  • EPS insulation board are found in basement walls and areas where space isn't at a premium.

What are the facing option for Insulation Board?

Facing options on insulated plasterboard should face up while installing insulation.

Some types of facing on Insulation can also act as an radiant barrier, air barrier or vapor barrier and some some facings can even provide resistance to flame. Common facing materials include kraft paper, white vinyl sheeting, and aluminum foil. All of these materials act as an air barrier and vapor barrier. Some other options are as follows:

Insulated Plasterboard

Foil-faced

Glass tissue (external wall)

PIR Plywood Laminate

Bituminous waterproof facing

Walls

  • Inside walls can be insulated with plasterboard.
  • For outside walls its best to use insulation board with an external-facing render

Boards for the outer side of the building

  • Expanded polystyrene Insulation Board (EPS Insulation foam board)
  • Phenolic

Boards for pitched roof

  • Joist level rigid board which is installed right above the ceiling
  • Rafter level rigid board is installed below the roof

Boards for flat roofs

Boards for floors

Board for cavity walls

Partial fill cavity wall insulation

Full fill cavity wall insulation

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