Dimensions 1200 × 450 mm
Brand

Celotex

Thickness

100mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

6

Sales Unit

Board

Unit Coverage

3.24m2

Manufacturers Reference

CW4100

Thermal Conductivity

0.022W/mK

Density

31.5kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

3.65kg/m2

Product Range

Celotex Cavity Wall Board (CW4000)

Celotex CW4100 100mm Cavity Wall Board (1200mm x 450mm) – 3.24m2 pack

(13 customer reviews)
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Thickness

100mm Cavity Wall Insulation

Celotex Cavity Wall 100mm – an insulation material made from Polyisocyanurate. Polyisocyanurate – is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. The PIR core is bonded to low emissivity foil facings on each side. Low emissivity foil facing provides improved thermal performance in sealed cavity air spaces, improving the achievable U-value.
Celotex is a much-trusted brand because of its durable and reliable high-quality products.

Thermal – 100mm Cavity wall boards have a thermal conductivity of just 0.022W/mK. To sum up, the thermal conductivity means less heat will pass through the insulation boards, keeping internal temperatures level.

Sustainable – The thermal properties of the Cavity wall board 100mm will also prevent heat / energy escaping the building and save money on energy bills. Less energy escaping will also create a more energy efficient property. In short, this will contribute towards the fight against climate change.

Celotex Cavity Wall Boards 100mm – The most used thickness when it comes to insulation materials, and it is easy to handle and install. The most common cavity size is 90mm to 100mm. Moreover, the Cavity wall 100mm is a great option should you need to double up on insulation to achieve an unusual thickness.

Key Features of Celotex Cavity Wall Board

  • Lightweight
  • Great thermal qualities
  • More temperature controlled internal climate
  • Energy Efficient and Sustainable
  • Long lasting lifespan
  • Durable and reliable
  • Water repellent
  • Easy to install
  • Compressive strength: 120kPa
  • Free from harmful gases (CFC and HCFC)
  • They do not add to the formation of any gases with Ozone Depletion Potential (ODP) or Global Warming Potential (GWP)
  • 100mm Cavity wall Board Insulation is 1200mm x 450mm with a thermal conductivity of 0.022W/mK. This range comes in thicknesses from 40mm to 100mm.

100mm Celotex Cavity Application

Celotex cavity wall boards are rigid foam formed into rectangular shape designed for easy installation within partial fill, masonry cavity wall applications. In addition, the 100mm shape and size means there is little cutting required. The 100mm thickness and 1.2m x 0.45m size is a standard board and as a result, can be installed in between wall ties.
The boards are extremely durable and last lasting. The 100mm Celotex Board will last for as long as the building does, and product performance will not reduce over time. The 100mm is a well-used product within the construction industry.
Store the Celotex Cavity Wall boards 100mm, stacked, on a flat surface. In addition, if indoor storage is not an option, use the correct weatherproofing materials. In short, do not leave Celotex Cavity boards exposed to the elements because it can affect the performance of the board.
CW4000 is Cavity wall insulation which is made to be fitted in between the breeze blocks structure of the building (inner leaf) and the outside brickwork (outer leaf) to help insulate the building. The Cavity wall insulation must be fitted as you go when laying the inner and outer leaf.

How to Install Celotex Cavity Wall Boards

This is a guide only, always consult a building professional.

Step 1:
Firstly, Install wall ties into the inner leaf at 600mm apart horizontal centres
Furthermore, for suspended timber floors, wall ties start a minimum of 200mm below the top surface of the ground floor perimeter insulation upstand. Place the cavity tie clips (wall ties) 900mm apart.
After that, continue constructing the inner leaf up to the next wall tie course. (450mm above the previous inner leaf). Next, position the next course of wall ties at regular horizontal centres. Position extra wall ties at jambs for openings. Install the next course of blockwork secure the ties in place.
Furthermore, ensure excess mortar is cleaned away as you go.

Step 2:
Secondly, the first row of insulation boards should be installed between the two rows of wall ties (fleece must face outwards to cavity). In addition, retain each board tight against the inner leaf and but joints to get the best quality of insulation.
Always secure each board at a minimum of three points. Add additional ties to satisfy structural requirements such as around window frames or doors to ensure adequate retention of the Cavity Wall boards or cut pieces.

Step 3:
Thirdly, Apply a self-adhesive breathable tape to all horizontal and vertical joints of the cavity wall board edges and abutting junction interfaces. (No less than 100mm wide and no less than 50mm either side of any edge. add additional layers if needed.)
After that, build the outer leaf (outer brickwork) to the level of the top of the cavity wall boards and repeat the process. (Cavity of 10mm or less).
Finally, if finishing at a gable, continue cavity Wall insulation boards 200mm beyond the height of the top storey ceiling. Install a cavity tray above the insulation.

100mm Cavity Wall Board Certifications

  • Euroclass E Reaction to Fire classification, according to BS EN 13501-1
  • A+ rating in comparison to the BRE Green Guide 2008
  • CE marking complying with BS EN 13165:2001
  • BS EN ISO 9001:2000 and quality management systems
  • Environmental Management System – ISO 14001:2015

Dimensions 1200 × 450 mm
Brand

Celotex

Thickness

100mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

6

Sales Unit

Board

Unit Coverage

3.24m2

Manufacturers Reference

CW4100

Thermal Conductivity

0.022W/mK

Density

31.5kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

3.65kg/m2

Product Range

Celotex Cavity Wall Board (CW4000)

Dimensions 1200 × 450 mm
Brand

Celotex

Thickness

100mm

Material Type

Polyisocyanurate (PIR)

Pieces Per Pack

6

Sales Unit

Board

Unit Coverage

3.24m2

Manufacturers Reference

CW4100

Thermal Conductivity

0.022W/mK

Density

31.5kg/m3

Fire Rating

Euroclass F

Edge Type

Square

Facing

Low Emissivity Foil

Weight (kg/m2)

3.65kg/m2

Product Range

Celotex Cavity Wall Board (CW4000)

13 reviews for Celotex CW4100 100mm Cavity Wall Board (1200mm x 450mm) – 3.24m2 pack

  1. Krzysztof

    Really good service and delivery

  2. Ethan

    website was quick and easy to navigate

  3. Christopher

    5* Company Rated

  4. William Cockridden

    was advised 5-7 working days received in 2 working days 10 out 10 service, now finally installed 100mm Celotex Cavity Boards will require some more in June – WILL BE BACK!

  5. Lynne Denise

    Finally found some Celotex Cavity Boards dont understand why my local builders merchant said its not called 100mm Celotex Cavity its Called CW4100

  6. Jake

    Wanted a bulk discount but was advised that Trade Insulations do rock bottom prices no matter the quantity. I checked other websites and they were coming out more expensive even with their bulk discount so this confirmed that Trade Insulations are the real deal.

  7. Pete

    Delivery was rapid on this. Can’t moan at your prices either – will be back on the next one

  8. Tim L

    The whole experience was flawless. From ordering to delivery to a follow up phone call. I can’t fault anything.

  9. Charles Kether

  10. Anu

    Really pleased with my delivery

  11. Abdul

    Very good and reliable service

  12. Ryan Pritchit

    Really helpful company, will use for my next project

  13. Tom Hardis

    Pleased with service

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Please login to post questions

Question:

What is the minimum gap for cavity wall insulation?

maxfrommarble
16-Sep-2022

Answer:

25mm-50mm Partial fill solutions leave a 25mm-50mm gap between the cavity and external wall to reduce the chance of moisture tracking into the home.

Question:

Can you use Celotex in cavity wall?

maxfrommarble
16-Sep-2022

Answer:

Celotex CW4000 is an easy to install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing. Available in thicknesses from 40mm to 100mm, it can be considered for use in partial fill cavity wall applications.

Celotex is a leading manufacturer of insulation products. Celotex is a part of the Saint-Gobain Insulation UK group and has been innovating the insulation market since 1925. Celotex provides a large range of insulation solutions from plasterboard to PIR insulation boards.They provide a variety of solutions for different market sectors and also applications.Saint-Gobain believes in creating great living places and improving daily life. They have good technical support and are a trusted name in the business.At Trade Insulations, we offer the best prices on Celotex board.

Celotex CW4000 Datasheet

CW4000 BBA Certification

CW4000 Declaration Of Performance

Celotex Safety Datasheet

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