The world's largest supplier of underfloor heating

Warmup Insulated Underlay

Warmup Insulated Underlay

RRP: £40.79£31.99

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Warmup Insulated Underlay is a thin insulation barrier that reflects heat upwards, making the underfloor heating system more efficient and effective. It also reduces contact noise and the foil backing acts as an effective moisture barrier.

Warmup insulated underlay has been specially developed for installation under Warmup dual overlay as part of a complete stable overlay system. It is the ideal duo for installation of soft and resilient floor coverings such as carpet, vinyl and linoleum, in combination with the Warmup foil heater.

Thanks to the structural integrity and design of the Warmup Insulated Underlay, a heat resistance of as much as 0.19 (Rm value)is achieved.

Features and benefits

  • Resists heat loss and increases the efficiency of the underfloor heating system
  • Extremely effective in reducing contact noise
  • Very thin at only 6mm in depth
  • Lightweight and easy to install
  • Foil backing acts as a moisture barrier
  • Recommended for use in combination with Warmup Dual Overlay, for best results under carpet and resilient flooring such as vinyl and linoleum

The Warmup Insulated Underlay is a thin insulation barrier that reflects heat upwards, making the underfloor heating system more efficient and effective. The insulated underlay has been specially developed for installation under the Warmup Dual Overlay system in combination with the Warmup foil heating system.

Step 1

Ensure that the base is clean and dry. Install the insulation with the silver foil facing down. After fitting the first rows, roll out the next section of underlay. Remove the protective film from the self-adhesive overlap and stick both rows together, creating a damp proof situation.

Carpets and Underlays

Carpets and Underlay have a higher TOG value and a greater resistance to heat transfer, so it is important to choose carpets and underlays that have low Tog ratings. The thicker the carpet and underlay the longer the warm up time; this will have the effect of slowing the heat transfer of the flooring into the room. It is important to check the suitability for use with under floor heating. If you need to use an additional underlay ensure it has a low Tog rating, no greater than 0.8Tog, ideally 0.5 Tog.

Warmup Underlay and Vinyl Flooring

Vinyl Type Flooring This type of floor may be used over the Warmup Dual Overlay, but it is important to remember that high temperature adhesives suitable for underfloor heating must be used. When vinyl floor coverings are to be glued, fit the Warmup dual underlay and overlay 24 hours before.

NOTE: The maximum Tog rating for the carpet, underlay and the Warmup Dual Overlay should not exceed 2.5 Tog. When fixing carpet to the Warmup Dual Overlay it is recommended to use a tackifier adhesive or the double stick method of carpet installation. If using the stretch method of installation the gripper must be installed before the heating system. In order for the gripper to function correctly, the top surface of the gripper should be level with the top surface of the Warmup dual overlay system or insulated underlay. This can be achieved either by using an architectural gripper or a timber spacer under a conventional gripper to raise it to the correct level.

Composition: Top LayerGrooved polystyrene
Composition: Bottom LayerSilver foil with adhesive overlap
Rm Value0.19
Contact Sound Reduction*25dB ΔLw when used in conjunction with Warmup Dual Overlay.

* In case of floating substrate systems the sound reduction of the finished floor covering will always depend on the impact sound reduction of the existing substrate.

NameProduct CodePrice
Warmup Insulated Underlay - 2.5m21142£31.99
Warmup Insulated Underlay - 5m21144£64.00
Warmup Insulated Underlay - 10m21141£127.99
Warmup Insulated Underlay - 25m21143£319.99

Delivery options

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.

Our delivery options

  • 2-3 Working Days (3-5 working days on wet room and energy efficiency products)
  • FREE
  • Next Working Day
  • £4.99 (order before 4pm, Monday to Friday)
  • Next Working Day Before 10.30am
  • £14.99 (order before 4pm, Monday to Friday)
  • Saturday Delivery
  • £29.99 (order before 4pm on Friday)