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Orders placed between 21st Dec and 1st Jan will be processed on 02-01-2025. Merry Christmas!
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards
  • underfloor insulation boards

Heat-Pak Dual Overlay System - Underfloor Heating Boards - 1200mm x 600mm

Rated 4.8 by 10 Happy Customers
(incl VAT) £69.26
(excl VAT) £57.72
Orders placed between 21st Dec and 1st Jan will be processed on 02-01-2025. Merry Christmas!
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Our team is happy to fulfil custom orders, offer special bulk discounts you cannot get from the website. Please get in touch today to discuss your needs.

Heat Pak Dual Overlay is the perfect overlay system that brings your underfloor heating and flooring together. It is a free-floating subfloor panel compatible with all types of flooring and underfloor heating system.
Overlay boards by Heat-Pak have a low thermal resistance that allows the precious heat energy generated by underfloor heating to pass through to the surface quickly for a speedy warm-up time and optimal comfort. These underfloor insulation boards also enable the inclusion of insulation for maximum comfort. 


Each pack of dual overlay systems consists of a 3mm baseboard and 4 mm top board. Both these insulation boards for underfloor heating are made with superior quality MDF or medium-density fibreboard. The twin layers of the overlay system use an overlap joint design for a smooth surface and eliminate lines. You will only need a small amount of adhesive or tape to hold the overlay system in place. It gives you a clean, smooth finish.


The heat-Pak subfloor panel is quite easy to install. Installation takes little time and is much quicker and easier to apply than a conventional smoothing solution. The whole installation process is fully dry, making it cleaner, and there is no waiting period, which means that the flooring can be installed right away. Electric cable, mat, foil, or film system installation is simpler with Heat-Pak® than with the wet screed technique. 


Heat-Pak insulation boards are not suitable for use in bathrooms, en suites, wetrooms or other wet places as they expand on contact with moisture. In any of these locations, you must use an underfloor heating mat with a self-levelling compound when laying carpet or vinyl.


Key Features:

  • Underfloor insulation boards are compatible with all floor types. 
  • Low thermal resistance enables heat to pass through quickly.No heat loss
  • Insulation boards are compatible with  electric cable, mat, foil, or film system
  • No wait time is needed, fastens floor installation.
  • Easy to install and work with
  • Subfloor panels give a seamless finishing 
  • Applied over underfloor heating and below the flooring of choice.

Product Details: 

  • Material: Medium density fibreboard with an interactive adhesive
  • Length : 1200mm
  • Width: 600m
  • Thickness of top board: 4mm
  • Thickness of bottom board: 3mm
  • Density: 770 kg/m3
  • Thermal Rm Value: 0.047m2.K.W.-1
  • Fire Class: B2 (DIN4102)
  • Bending Strength: >40

Application:
The heat-Pak boards form a stable and smooth overlay system for all resilients and carpets. It is applied over underfloor heating and below the flooring of choice

  • A pack consists of one 3mm floorboard and one 4mm top board
  • These underfloor heating boards come in 1200mm x 600mm size
  • Overlay boards work are compatible with all types of flooring.
  • Medium density fibreboard fitted with an interactive fitted adhesive
Insulation Type  Underfloor heating Boards
Brand  Heat-Pak
Length 1200mm 
Width  600mm
Top Board Thickness  4mm
Base Board Thickness  3mm
Material   MDF, fitted with an interactive adhesive
Pack Contents  One floorboard and one top board
Density  770 kg/m3
Bending Strength   >40 kg/cm2
Humidity  4 -10 %
Thermal Rm value  0.047 m2.K.W.-1
Fire Class, DIN4102  B2
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Order Value Delivery Charges (Excluding VAT)
Any Order Value  £4.2 anywhere in the Mainland UK

Returns and Cancellations:

  • You can cancel your order and get a full refund before we confirm your order via email.
  • Orders cancelled after the email confirmation is sent, may attract a restocking fee.
  • You are welcome to return the products ordered in excess/no longer required, via post or couriers, provided they are in the original packaging and in a resalable condition within 14 days of delivery. Return requests made after 14 days will not be entertained.
  • If wrong products were delivered or delivered items are faulty, please email us and we will assist you accordingly.

For more information, please refer to our Delivery information page

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Installation Guide

Insulation Type  Underfloor heating Boards
Brand  Heat-Pak
Length 1200mm 
Width  600mm
Top Board Thickness  4mm
Base Board Thickness  3mm
Material   MDF, fitted with an interactive adhesive
Pack Contents  One floorboard and one top board
Density  770 kg/m3
Bending Strength   >40 kg/cm2
Humidity  4 -10 %
Thermal Rm value  0.047 m2.K.W.-1
Fire Class, DIN4102  B2
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Order Value Delivery Charges (Excluding VAT)
Any Order Value  £4.2 anywhere in the Mainland UK

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