20mm Premium Thermal Substrate Insulation Board 1200 x 600mm

More from Tile Backer Boards

BBA Approved
20mm Premium Thermal Substrate Insulation Board 1200 x 600mm
20mm Premium Thermal Substrate Insulation Board 1200 x 600mm

Quick Find: 8689
Part Code: BXB0040D

Free Delivery Available
£9.92 exc VAT
RRP: £17.45
Stock Available: 10+ Units

Product Qty Total: £0.00

Day of Choice Delivery available after checkout

Element Shop

Product overview

Weight 2.59 Kg

Premium Thermal substrate insulation board is a lightweight insulated tile backing board developed specifically for use with tiled floors. It consists of a Polyfoam core with glass fibre reinforced polymer-modified cement faces. It is dimensionally stable, doesn't rot or warp and provides excellent resistance to moisture. It also offers the additional benefit of a high level of thermal insulation, making it the ideal substrate for floor tiling over underfloor heating mat systems. Thermal substrate board is extremely light and easy to cut (using fine tooth saw, jigsaw or utility knife, for example) and to work with.


  • Dimensionally stable, does not warp
  • Excellent resistance to moisture
  • High level of thermal insulation
  • Extremely light and easy to cut

Technical specifications

ApprovalBBA Certified
Depth20 mm
Mat Length1.2 m
Mat Width0.6 m
Product TypeInsulation Board
TypeTile Backer Boards

Product reviews

4.367% Positive (3 reviews)

Ratings based on data collected by third party reviewing platform.


Trusted Customer
26 February 2020 08:18

Some of the sheets appear to have scuffed and pot marks suggesting they are not all new. Quite a few have old water damage which is apparent through the staining. Warehouse storage issue or old/damaged stock?

Packaging the first time was only plastic, not offering protection. Second delivery had cardboard which is better


Bob Sears, Nottingham
30 September 2019 07:19

Excellent product well priced

The agent I spoke to recommend an alternative product to the one I had chosen, which turned out to be better suited to the job in hand and was better priced.

This is fantastic to hear, thank you very much for the great review.


Thomas Ballard
8 September 2018 07:38

Prompt delivery and great service

Great service and very prompt delivery. Absolutely spot on. Easily contactable - I would recommend to anyone.


Thank you for the great review of our service, we appreciate the positive feedback.

Related articles

Electric Underfloor Heating Vs Water Underfloor Heating

Feb 22

Which underfloor heating system should you choose? If you are undecided which system to install for you, we have some helpful pros and cons for each system which may help you decide which system...

Read more

How to Install an Electric Underfloor Heating Mat

Oct 31

Installing electric floor heating is not a difficult task as long as our step by step instructions are followed and you receive the very best advice to get the best underfloor heating for your inst...

Read more

More from the Thermal Substrate Premium range...

Alternatives to the 20mm Premium Thermal Substrate Insulation Board 1200 x 600mm