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Water Insulation Boards

Water insulation boards are installed directly below your water underfloor heating system, working to save both energy and money. These boards are perfect and safe for use with hot water systems and provide outstanding thermal performance when used beneath a wet underfloor heating system. Designed with high-grade materials, these boards offer enhanced resistance to fire, rot and general corrosion as well as providing excellent acoustic insulation properties which can help reduce noise level in the home.
  • ProWarm™ LoFlo LITE Overlay Panel 1200x600x16mm
    Save £3 Save £0 Up to 20% Off!
    £14.99
    £11.99
    From £11.99
    £11.99
    ProWarm™ LoFlo LITE Overlay Panel 1200x600x16mm
    In stock

    The ProWarm™ LoFlo™ LITE Panels are specifically designed to meet the requirements of both tile and floating floor installations. These dual-purpos...

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    £14.99
    £11.99
    From £11.99
    £11.99
    Save £3 Save £0 Up to 20% Off!
  • ProWarm™ LoFlo™ LITE Overlay Panel 1200x600x20mm
    Save £3 Save £0 Up to 20% Off!
    £14.99
    £11.99
    From £11.99
    £11.99
    ProWarm™ LoFlo™ LITE Overlay Panel 1200x600x20mm
    In stock

    Discover the exceptional versatility and performance of ProWarm™ LoFlo™ LITE Dual Purpose Overlay Panel 1200x600x20mm. These innovative panels are ...

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    £14.99
    £11.99
    From £11.99
    £11.99
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  • ProWarm™ ProFloor Pre-Routed Chipboard 22mm
    Save £2.60 Save £0 10% Off - Big Brand Sale!
    £25.99
    £23.39
    From £23.39
    £23.39
    ProWarm™ ProFloor Pre-Routed Chipboard 22mm
    In stock

    PLEASE NOTE: This product must be used with the ProWarm™ Aluminium Spreader Plate 390mmx1000mm Experience the convenience and efficiency of ProWarm...

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    £25.99
    £23.39
    From £23.39
    £23.39
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  • ProWarm™ ProFloor End Returns 22mm
    Save £2.40 Save £0 10% Off - Big Brand Sale!
    £23.99
    £21.59
    From £21.59
    £21.59
    ProWarm™ ProFloor End Returns 22mm
    In stock

    ProWarm™ 22mm ProFloor End Return Panels are designed to work in conjunction with ProFloor pre-grooved panels, providing a seamless solution for th...

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    £23.99
    £21.59
    From £21.59
    £21.59
    Save £2.40 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Aluminium Spreader Plate 390mmx1000mm
    Save £1.30 Save £0 Up to 20% Off!
    £6.49
    £5.19
    From £5.19
    £5.19
    ProWarm™ Aluminium Spreader Plate 390mmx1000mm
    In stock

    Upgrade your underfloor heating system with ProWarm™ Aluminium Spreader Plate 390mmx1000mm. These high-quality diffuser plates are specifically des...

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    £6.49
    £5.19
    From £5.19
    £5.19
    Save £1.30 Save £0 Up to 20% Off!
  • ProWarm™ Aluminium Spreader Plate 390mmx1000mm - 150mm Centres
    Save £1.60 Save £0 Up to 20% Off!
    £7.99
    £6.39
    From £6.39
    £6.39
    ProWarm™ Aluminium Spreader Plate 390mmx1000mm - 150mm Centres
    In stock

    Upgrade your underfloor heating system with ProWarm™ Aluminium Spreader Plate 390mmx1000mm. These high-quality diffuser plates are specifically des...

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    £7.99
    £6.39
    From £6.39
    £6.39
    Save £1.60 Save £0 Up to 20% Off!
  • ProWarm™ LoFlo™ MAX Overlay Boards 800x600x18mm
    Save £1.80 Save £0 10% Off - Big Brand Sale!
    £17.99
    £16.19
    From £16.19
    £16.19
    ProWarm™ LoFlo™ MAX Overlay Boards 800x600x18mm
    In stock

    ProWarm™ LoFlo™ Max Overlay Boards feature an 18mm high-density dry gypsum fibre board that serves as a highly efficient heat conducting surface. T...

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    £17.99
    £16.19
    From £16.19
    £16.19
    Save £1.80 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ LoFlo™ MAX Overlay Boards 800x600x15mm
    Save £1.80 Save £0 10% Off - Big Brand Sale!
    £17.99
    £16.19
    From £16.19
    £16.19
    ProWarm™ LoFlo™ MAX Overlay Boards 800x600x15mm
    In stock

    Experience the exceptional performance and convenience of ProWarm™ LoFlo™ Max Overlay Boards 18mm. These innovative panels utilize a high-density d...

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    £17.99
    £16.19
    From £16.19
    £16.19
    Save £1.80 Save £0 10% Off - Big Brand Sale!
  • Save £0.35 Save £0 10% Off - Big Brand Sale!
    £3.49
    £3.14
    From £3.14
    £3.14
    ProWarm™ LoFlo™ End Return 18mm
    In stock

    The ProWarm™ LoFlo™ End Return is a versatile and innovative solution that serves as a multifunctional pipe return, pipe clip, and floor support sy...

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    £3.49
    £3.14
    From £3.14
    £3.14
    Save £0.35 Save £0 10% Off - Big Brand Sale!
  • Save £0.35 Save £0 10% Off - Big Brand Sale!
    £3.49
    £3.14
    From £3.14
    £3.14
    ProWarm™ LoFlo™ End Return 15mm
    In stock

    The ProWarm™ LoFlo™ End Return is a versatile and innovative solution that serves as a multifunctional pipe return, pipe clip, and floor support sy...

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    £3.49
    £3.14
    From £3.14
    £3.14
    Save £0.35 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Foiled Faced In Joist/Batten System - ProWarm™ Foiled Faced In Joist/Batten System 350mmx1200mmx50mm - 80 Boards (Covers 33.6m2)
    Save up to £390 Save £0 10% Off - Big Brand Sale!
    From £14.99
    From £13.49
    From £13.49
    £13.49
    ProWarm™ Foiled Faced In Joist/Batten System
    In stock

    The ProWarm™ Foiled Faced In Joist/Batten System is an all-in-one solution designed for easy installation. These panels, measuring 1200mm x 350mm x...

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    From £14.99
    From £13.49
    From £13.49
    £13.49
    Save up to £390 Save £0 10% Off - Big Brand Sale!
  • ProCrate Egg Crate 1250mmx850mm
    Save £1 Save £0 10% Off - Big Brand Sale!
    £9.99
    £8.99
    From £8.99
    £8.99
    ProCrate Egg Crate 1250mmx850mm
    In stock

    Elevate your underfloor heating system with ProCrate Egg Crate, a versatile and convenient solution for your installation needs. This system offers...

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    £9.99
    £8.99
    From £8.99
    £8.99
    Save £1 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Low Profile Egg Crate System 1050x650mm
    Save £0.78 Save £0 10% Off - Big Brand Sale!
    £7.79
    £7.01
    From £7.01
    £7.01
    ProWarm™ Low Profile Egg Crate System 1050x650mm
    In stock

    The ProWarm™ Low Profile Egg Crate System is a versatile and user-friendly solution for creating a reliable and efficient underfloor heating system...

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    £7.79
    £7.01
    From £7.01
    £7.01
    Save £0.78 Save £0 10% Off - Big Brand Sale!
  • John Guest Overlay Boards - Joists - John Guest Overlay Boards - Joists
    £21.99
    From £21.99
    £21.99
    JG Underfloor Heating Overlay Boards - Joists
    In stock

    Introducing JG Overlay Boards - Joists, the perfect solution for low profile underfloor heating systems in both new build and renovation projects. ...

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    £21.99
    From £21.99
    £21.99
  • Polypipe Overlay Floor 800x600 - 10 Panels
    £245.99
    From £245.99
    £245.99
    Polypipe Overlay Floor 800x600 - 10 Panels
    In stock

    Elevate your underfloor heating system with Polypipe Overlay Floor, a versatile and practical solution for installing floor heating in existing spa...

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    £245.99
    From £245.99
    £245.99
  • Polypipe Overlay End Returns, 10 Pack - Polypipe Overlay End Returns, 10 Pack
    £4.79
    From £4.79
    £4.79
    Polypipe Overlay End Returns - 10 Pack
    In stock

    Enhance the functionality and aesthetics of your underfloor heating system with Polypipe Overlay End Returns. This pack includes 10 end returns, ea...

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    £4.79
    From £4.79
    £4.79
  • HiDeck18 Overlay Board - 18mmx1200mmx600mm
    Save £3.40 Save £0 10% Off - Big Brand Sale!
    £33.99
    £30.59
    From £30.59
    £30.59
    HiDeck18 Overlay Board - 18mmx1200mmx600mm
    In stock

    Discover the exceptional performance of Cellecta's HiDeck18 Overlay Board, a versatile solution designed to meet a wide range of flooring applicati...

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    £33.99
    £30.59
    From £30.59
    £30.59
    Save £3.40 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Underfloor Heating Edge Insulation 50m - ProWarm™ Underfloor Heating Edge Insulation 50m
    Save £2.50 Save £0 10% Off - Big Brand Sale!
    £24.99
    £22.49
    From £22.49
    £22.49
    ProWarm™ Underfloor Heating Edge Insulation 50m
    In stock

    ProWarm™ Underfloor Heating Edge Insulation is a vital component designed specifically for screeded floors. It is used around the edge of the room ...

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    £24.99
    £22.49
    From £22.49
    £22.49
    Save £2.50 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Underfloor Heating Edge Insulation 8mm - 50m
    Save £3 Save £0 10% Off - Big Brand Sale!
    £29.99
    £26.99
    From £26.99
    £26.99
    ProWarm™ Underfloor Heating Edge Insulation 8mm - 50m
    In stock

    ProWarm™ Premium 8mm Underfloor Heating Edge Insulation is a vital component designed specifically for screeded floors. It is used around the edge ...

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    £29.99
    £26.99
    From £26.99
    £26.99
    Save £3 Save £0 10% Off - Big Brand Sale!
  • ProWarm™ Aluminium Fit From Below J Spreader Plate
    Save £0.40 Save £0 10% Off - Big Brand Sale!
    £3.99
    £3.59
    From £3.59
    £3.59
    ProWarm™ Aluminium Fit From Below J Spreader Plate
    In stock

    The ProWarm™ Aluminium Fit From Below J Spreader Plate removes the need to lift the floor boards. 100mm wide with single channel grooves fit from b...

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    £3.99
    £3.59
    From £3.59
    £3.59
    Save £0.40 Save £0 10% Off - Big Brand Sale!
  • Save 10% In Our Big Brand Sale

    Save big on ProWarm, Warmup, Heatmiser and UltraTile

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  • Order Before 4pm For Next Day Delivery

    Monday To Friday only. With our fast delivery options, we'll have you warm in no time!

Need help? Talk to our product experts!

Our highly experienced technical team are happy to assist you throughout your journey. Message the team on live chat or call 01268 567016

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