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John Guest Overlay Boards - Joists

John Guest Overlay Boards - Joists

RRP: £43.38 £26.99

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Low profile system for new build or renovation projects. Grooved foil faced insulation panel for installation 15mm tubing over existing floor structures to facilitate the use of Underfloor Heating within timber flooring structures.

Underfit is designed for use with timber suspended or floating floors. 15mm JG Layflat pipe is installed into a grooved foil-faced panel with 200mm centres over existing floor structures, either between battens or under the floor between existing joists.

  • Grooved foil-faced panel
  • Easy to install
  • Medium to low heat output & response
  • Low profile
Heat outputapprox 50-60w/m2
Recommended flow temperature50-60ºC
Maximum circuit length100m
Typical cover per loop15-20m2
Individual panel size350X1200X50(mm)

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)