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100mm EPS White Polystyrene External Wall Insulation Board ǀ pack of 6

100mm White EPS Expanded Polystyrene - EWI External Wall Insulation - EPS70 Poly Board
100mm White EPS Expanded Polystyrene - EWI External Wall Insulation - EPS70 Poly Board
100mm White EPS Expanded Polystyrene - EWI External Wall Insulation - EPS70 Poly Board
100mm White EPS Expanded Polystyrene - EWI External Wall Insulation - EPS70 Poly Board
100mm EPS White Polystyrene External Wall Insulation Board ǀ pack of 6
  • External Wall Insulation Systems - EWI
  • Easily cut with a sharp knife to any size and shape
  • Thermal Conductivity: 0.042W/mK
  • High Resistance to Mold Growth
  • Lightweight - Cost efficient - Durable
Estimated delivery:
In Stock
£ 73.96
Ex VAT: £ 61.63
  • Brand: Ceresit®
  • Model: 100mm EPS 70 EWI
  • Dimensions: 1,000mm x 500mm x 100mm
  • SKU: 100mm
  • Product code: P1-902
  • MPN: 100mm White EPS (Expanded Polystyrene)

Options available

100mm White EPS External Wall Insulation Board (EPS70) is an easy to handle and install Expanded Polystyrene Insulation material used as a main component of external wall insulation systems and thin coat rendering.

White EPS (Polystyrene) 100mm is a lightweight basic insulation material available at reasonable prices that can effectively reduce heating costs and improve the appearance of the property.

Complete external wall insulation using white polystyrene is durable and maintains its functional properties throughout the entire life of the building.

External wall insulation systems based on polystyrene sheets for building facades are a proven solution that has been used in construction for over 50 years.

Expanded polystyrene is one of the most popular thermal insulation materials used to insulate building facades using the ETICS (External Thermal Insulation Composite System) method.

Polystyrene White EPS Board is a solid thermal insulation product often chosen by investors as a cheap external wall or floor insulating material.

White color reflects the sun better than grey, hence it is often not necessary to rasp the white EPS, saving several hours of work for an average installation.

Regardless of which type of polystyrene you choose, white or graphite (grey), remember that the key to proper thermal insulation of a building is its accurate installation, in accordance with the regulations and standards.




Thickness: 100mm

Width: 500mm

Length: 1000mm

Pack coverage: 3.00m2

Density: 10kg/m3

Thermal Conductivity: 0.042W/mK

R-Value: 2.35m2K/W

Water vapour resistivity: 20MN.s/g.m

Compressive Strength: >75 kPa

Fire Rating (Reaction to Fire): E


Key points:

 · Highly durable.

 · Lightweight.

 · Easy to handle.

 · Easy to install.

 · Cost-effective solution.

 · Easy to cut with a sharp knife to any size and shape.

 · High resistance to mold growth.

 · An environment friendly product.



 · External wall insulation systems

 · Solid brick and block walls.

 · Cavity brick and block walls.

 · Thin coat rendering.

 · Balconies and loggias.

 · Roofs and between rafters.

 · Rims, lintels and reveals.

 · Insulated render systems.

 · Ceilings in garages and basements from below.

 · Walls with a frame structure.

 · ETICS - External Thermal Insulation Composite Systems.


Preparations for the installation of white polystyrene:

There is no obligation to sand it before sticking due to good adhesive properties.

Rasping the polystyrene surface before sticking (regardless of its color) improves the adhesion of the adhesive to the fixing. 

The surface grinding operation must be performed on the upper side, before embedding the mesh.


What glue for white polystyrene?

Some manufacturers recommend gluing white polystyrene boards using a universal adhesive intended for embedding the mesh and for fixing polystyrene, not only polystyrene adhesive.

We recommend: Ceresit ZU Insulation Adhesive, Ceresit CT87 White Flexible Adhesive or Ceresit CT84 Express PU Foam Adhesive.

Experience shows that if we buy a really good polystyrene adhesive, it will work.

It is worth recalling that each polystyrene should be glued with the circumferential-point method. 

After applying the glue, it should be on at least 40% of the board surface. 

Dot and dab method should not be used anymore, but still many contractors stick polystyrene only to "dabs", insisting that they have been doing it for years and it is fine. 

This error can cause the boards to fall off, especially those made of graphite polystyrene.



 · Produced to the requirements of EN-13163 Standard.


*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

Board covarage 3.00 m2
Colour White
Compressive Strength 75 kPa
Density 10kg/m3
Length 1000mm
Material Expanded Polystyrene
Profile Square Edge
R-Value 2.35m2K/W
Thermal Conductivity 0.042W/mK
Thickness 100mm
Width 500mm
Application Temperature from +5 °C to +25 °C
Shipping method Rigid Vehicle ǀ Courier
Applications External Wall Insulation Systems
ETA Notification Yes
Features Effectively reduce heating costs
Manufacturer Henkel Ceresit®

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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.
100mm White EPS Expanded Polystyrene - EWI External Wall Insulation - EPS70 Poly Board
100mm EPS White Polystyrene External Wall Insulation Board ǀ pack of 6
£ 73.96