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ProWarm™ Tile Backer Board 6mm to 50mm - BACKER-PRO

From £11.49
Now £11.49
in stock, ready to be shipped
in stock, ready to be shipped
in stock, ready to be shipped
in stock, ready to be shipped
in stock, ready to be shipped
in stock, ready to be shipped
ProWarm™ Tile Backer Board 6mm to 50mm - BACKER-PRO
From £11.49
Now £11.49
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Call our product experts 01268 567016

Fast & Reliable Delivery

For delivery on Tuesday

When ordered before 4pm (On weekdays)
How many boards do I need?
Add your area dimensions and we'll calculate how many boards you need

ProWarm™ BACKER-PRO insulation boards are the ultimate solution for superior waterproofing and heat insulation in underfloor heating and under tile applications. These high-quality extruded polystyrene panels, reinforced with fibreglass mesh on both sides, are specifically designed to complement our under tile heating cables and mats (not suitable for underwood systems).

Key Features:

  • Superior Waterproof Surface: The BACKER-PRO boards provide a durable and waterproof foundation for securely fixing wall or floor tiles, ensuring long-lasting performance and protection against moisture.
  • Outstanding Heat Insulation: With their excellent thermal conductivity value of 0.033 W/mK, these insulation boards significantly enhance the efficiency of underfloor heating systems. They reduce heat-up time and minimize running costs, delivering optimal comfort and energy savings.
  • Wide Range of Thickness Options: Available in 6mm, 10mm, 12.5mm, 20mm, 30mm, and 50mm thicknesses, the BACKER-PRO boards offer versatility to accommodate various installation requirements and insulation needs.
  • Approved by Tile Adhesive Manufacturer Instarmac -Ultra: The BACKER-PRO boards have been rigorously tested and approved by Instarmac -Ultra, a leading tile adhesive manufacturer, ensuring compatibility and reliability.
  • Excellent Sound Insulation: The boards effectively reduce impact sound, creating a quieter and more comfortable environment.
  • Easy Installation: The BACKER-PRO boards can be easily cut with a knife, eliminating the need for complex tools such as a jigsaw. They can also be installed on both floors and walls, following the correct installation method.
  • Dimensional Stability: The boards are waterproof and exhibit excellent dimensional stability, maintaining their integrity and performance even in wet room environments.

Enhance your underfloor heating and tiling projects with ProWarm™ BACKER-PRO insulation boards. Their exceptional waterproofing, insulation properties, and ease of installation make them the ideal choice for creating a reliable and efficient heating system with a durable tile surface.

  • Available Thicknesses: 6mm, 10mm, 12.5mm, 20mm, 30mm, 50mm
  • Waterproof: Yes
  • Thermal Conductivity: 0.033 W/mK
  • Sound Insulation: Yes
  • Installation Method: Cutting with a knife, suitable adhesives for concrete or wooden subfloors

Please note: The color of the polystyrene may vary depending on the batch. The boards are not stamped with 'ProWarm', and the image is for advertising purposes only.

Material Extruded Polystyrene Sheet - Polymer Modified Coating
Sheet Dimensions 1200mm x 600mm
Thermal Conductivity 0.033 W/mK
Capillarity Nil
Compression Strength 30 t/m2
Water absorption Less than 0.1 vol%
Tensile Strength 350 KPa
Fire Protection Class Bs 3837:B1 DIN

Concrete Subfloors

When installing any type of tile backer board onto concrete subfloor we recommend using Ultra™ flexible tile adhesive, please make sure the floor is primed with a suitable primer before installation.

Wood subfloors

When installing onto wooden floors we recommend using Ultra™ flexible tile adhesive in addition with ProWarm™ insulation fixing pack or suitable screws and washers at every 300mm centres. This is approx 15 fixings per board 

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    Product Question? Need help placing an order?

    Our customer support is available Monday to Friday 7am-6pm.

    Call us on 01268 567 016

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    Free delivery on all orders

    At The Underfloor Heating Store, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.

    We're proud to offer a range of delivery options to suit you, including free delivery on all of our orders or next working day delivery for a fixed price of £4.99

    • 2-3 working days delivery - FREE (Order before 4pm Monday - Friday)
    • Next working day - £4.99 (Order before 4pm Monday - Friday, applies to orders over £19.99)
    • Next working day before 10.30am - £14.99 (Order before 4pm Monday - Friday)
    • Saturday delivery - £29.99 (Order before 4pm Monday - Friday)
    • Free collection from our Basildon warehouse in Essex

    Explore our full delivery policy

    30 days returns policy

    At The Underfloor Heating Store, our customers have 30 days to upgrade, replace or refund their orders.


    At The Underfloor Heating Store, we want to ensure you are happy with every purchase you make. If you have any issues with your chosen product, whether damaged, faulty or simply an unwanted item, you can simply return what you bought for a refund. Learn more.


    We take great care in the delivery of all of our products, however, in the event of your delivery arriving damaged or if you notice a manufacturing fault of any kind within 48 hours of delivery, you're within your rights to a replacement. Learn more.


    Within 14 days of purchasing from us, you are eligible to upgrade if you deem you want something a little better. Simply send it back to us brand new and we'll happily assist you with an upgrade to your order. Learn more.

    Lifetime warranty

    At The Underfloor Heating Store, we are committed to providing our customers with high-quality products and outstanding customer service. That's why we offer a comprehensive warranty on all of our underfloor heating products, with a lifetime warranty for our ProWarm range of products.

    Our warranties are designed to give you peace of mind and ensure that your underfloor heating system operates reliably for years to come.

    Find out more

    We'll beat any price

    At The Underfloor Heating Store, our main priority is customer satisfaction. To cement our commitment to this, we are proud to offer our Underfloor Heating Price Match Promise. If you find a lower price on an identical product anywhere else, we will match it – guaranteed!

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