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Warmup 2.5sqm Insulated Underlay Underfloor Heating System




RRP: £37.39


5 Working Days Approx

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The Warmup Insulated Underlay is what you need alongside your Underfloor Heating system. 6mm thick, it is composed of a grooved polystyrene top layer and bottom layer of silver foil with adhesive overlap. Its primary function is to sit between the cold subfloor and foil heater reflecting heat upwards, and thus making the underfloor heating system more efficient. The foil backing creates an effective moisture barrier while the polystyrene insulation reduces contact noise. It is perfect for carpets and vinyl floor covering, under foil underfloor heating. Now available from your preferred shopping destination

+  Read what's included.. & options available

Optional Sizes

Warmup WIU2.5 Details

  • A thin polystyrene insulation barrier with effective acoustic properties to reduce contact noise
  • Heat loss resistance: Increases the energy efficiency of your underfloor heating system by pushing the heat-upwards
  • Very thin: Only 6mm in depth
  • Lightweight: Easy to install
  • Ideal with dual overlay for soft floor covers: Helps you to make the most of your foil heater by creating a highly energy-efficient heating system and soundproofed floors
  • It sits between the cold subfloor and foil heater, reflecting heat upwards, making the underfloor heating system more efficient and effective
  • The foil backing acts as an effective moisture barrier
  • The Insulated Underlay has been specially developed for installation under the Dual Overlay as part of a completely stable system
  • It is the ideal duo combination for the installation of soft and resilient floor coverings such as carpet and vinyl, under foil underfloor heating
  • Effective acoustic properties to reduce contact noise
  • Reflects heat upwards, making the system more energy efficient
  • More coverage area sizes are available [See Option]
  • Technical Specification:
  • Size: Width 1200mm x Coverage area 2.5sqm
  • Thickness: 6mm +/- 0.5
  • Composition: Top Layer - Grooved EPS, Bottom Layer - Silver foil with adhesive overlap
  • Rm Value: 0.17sqm k/w
  • Contact Sound Reduction: 21dB ΔLw When used in conjunction with Warmup dual overlay
  • Temperature reach: -30 deg C up to +70 deg C
  • Thermal Conductivity: 0.033 W/m.K
  • Density: 18 kg/m³
  • TOG: 1.7
  • Fire Class EN13501: Bfl
  • Water Vapour Diffusion resistance (SD): > 100

Please Note:*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.

Additional Info

Total: £28.42 5 Working Days Approx QS Supplies

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At QS Supplies, we use trustworthy carriers for deliveries across UK, Scotland and Ireland. We also follow an up-to-date tracking system to keep you posted on the status of your orders. Delivery dates are approximate, and therefore, we suggest you do not schedule any installation work until you have received the items. To learn more about our delivery service, click here. Please do not book Tradesmen until the items are safely received and thoroughly checked.


Before travelling for collections, please wait for a formal communication from us confirming your order is ready. For urgent orders, we recommend you call ahead to check lead times. Our Sales Team can be reached at 0116 251 0051, Monday to Friday from 8.30 am to 5.00 pm.


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