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Dimensions	1190 × 450 mm
Thickness	140mm
Material Type	Polyisocyanurate (PIR)
Pieces Per Pack	4
Sales Unit	Pack
Unit Coverage	2.14m2
Manufacturers Reference	TC140
Thermal Conductivity	0.021W/mK
Fire Rating	Euroclass E
Edge Type	Tongue and Groove
Facing	Low Emissivity Foil
Weight (kg/m2)	4.30kg/m2
Product Range	Soprema Thermaclass Cavity Wall Insulation

140mm Thermaclass Cavity Wall 21 – Sopratherm Thermaclass (1190mm x 450mm x 140mm) – 2.14m2

Name: 140mm Thermaclass Cavity Wall 21 - Sopratherm Thermaclass (1190mm x 450mm x 140mm) - 2.14m2 - Trade Insulations
SKU: thermaclass-140mm
Price: 123.29 GBP
Availability: InStock
Rating: 4.75 (4 reviews)

Rated 4.75 out of 5 based on 4 customer ratings

(4 customer reviews)

Delivery Up To 7 Working Days
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on orders over £350 +VAT

Pack of 4 (2.14m2)

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Original price was: £189.68.Current price is: £123.29. ex VAT

In Stock

Thickness

90mm

115mm

140mm

      EXCELLENT  
   Based on 1357 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Mrs Mav 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quick and easy ordering arrived on time. Good product and good prices.
  
 
      Posted on Google  
   
   Nick Dyer 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very Helpfull
  
 
      Posted on Google  
   
   Andrew Watts 
 
 
 
 Trustindex verifies that the original source of the review is Google. Good price on the product and prompt delivery.
  
 
      Posted on Google  
   
   Dan Kewell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service and easy to use website, order arrived ontime and in good condition
  
 
      Posted on Google  
   
   Adam Gooch 
 
 
 
 Trustindex verifies that the original source of the review is Google. Easy ordering, great prices and quick delivery
  
 
      Posted on Google  
   
   Matt Barnes 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fast delivery, great after care and wouldn't hesitate to purchase from Trade Solutions again!
  
 
      Posted on Google  
   
   Chris Staples 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service and price, ordered and delivered within 2 days with no damage, delivery driver was great and dropped the pallet right at my door, will be ordering more insulation soon to finish my garden room project
  
 
      Posted on Google  
   
   John Brenchley 
 
 
 
 Trustindex verifies that the original source of the review is Google. perfect delivery on time.
  
 
      Posted on Google  
   
   Paul Newman 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great value, great service, they proved themselves to me.
  
 
      Posted on Google  
   
   Fiona Potter 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very reliable, good price,  service with quality products thank you for the great experience

Soprema Thermaclass 140mm

Soprema Thermaclass 140mm Cavity Wall 21 is specifically designed for full fill masonry cavity wall applications. They consist of a PIR core, which features a low emissivity foil facing. This helps to provide improve thermal performance in sealed cavity air spaces. These Soprema 140mm cavity wall boards are manufactured by Soprema, who are a leading force in the construction industry. The Soprema Thermaclass Cavity Wall 21 board is made using a blowing ageny, which is CFC/HCFC free and has zero Ozone Depletion Potential (ODP) with a low Global Warming Potential (GWP). The thickness of this board is 140mm with dimensions of 1190mm by 450mm (1205mm by 465mm including tongue).

The 21 in ‘Thermaclass Cavity Wall 21’ refers to the thermal conductivity rating, which is 0.021W/mK. The lower the thermal conductivity, the better the thermal performance.

Soprema Thermaclass 140mm Key Features

Tongue & groove edge
Full fill masonry cavity wall insulation
Durable and reliable
Easy to install
Excellent thermal performance
Made by Soprema

These 140mm Thermaclass Soprema cavity boards feature a tongue and groove edge, which provides a continuous layer of insulation with minimal gaps to avoid thermal bridging and increase the thermal quality of the product.

The Thermaclass Cavity Wall 21 by Soprema range are sized to fit standard cavity wall tie spacing. They are light yet rigid, which ensures they are easy to handle and install. In addition to this, the Soprema 140mm Thermaclass has been assessed by BBA as fit for use in defined full fill cavity wall applications. Full datasheets and certification can be found on this product page. We also have other thicknesses available.

Dimensions	1190 × 450 mm
Thickness	140mm
Material Type	Polyisocyanurate (PIR)
Pieces Per Pack	4
Sales Unit	Pack
Unit Coverage	2.14m2
Manufacturers Reference	TC140
Thermal Conductivity	0.021W/mK
Fire Rating	Euroclass E
Edge Type	Tongue and Groove
Facing	Low Emissivity Foil
Weight (kg/m2)	4.30kg/m2
Product Range	Soprema Thermaclass Cavity Wall Insulation

4 reviews for 140mm Thermaclass Cavity Wall 21 – Sopratherm Thermaclass (1190mm x 450mm x 140mm) – 2.14m2

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Rated 5 out of 5
product arrived exactly as described great price great stuff thanks
luke – May 27, 2026
Rated 5 out of 5
product arrived exactly as described great price great stuff thanks
Jenson – April 16, 2026
Rated 4 out of 5
solid products and perfect condition
Ben – April 13, 2026
Rated 5 out of 5
Was told by my builder no one has stock of 140mm Thermaclass – ordered online and recieved in 3 working days, me and Mandy was over the moon
sadie – March 22, 2026
Rated 5 out of 5
easy to handle quality excellent