Moulded insulation board for hydronic floor heating

HYDROFOAM® is a moulded insulation board with a multidirectional anchoring design on the board's surface for installation of hydronic heat pipes (carrying hot water). The Hydrofoam® insulation board is a 2-in-1 product that insulates under the concrete slab and makes the installation of 1/2 inch pipes easier.


HYDROFOAM® is a 4 ft x 4 ft (1219 mm x 1219 mm) moulded insulation board. It is 1 inch (25 mm) interlocking and shiplapped on all four sides.


  • Thicknesses of 2 1/2 in (64 mm) and 4 in (102 mm)
  • R factors of R-10 and R-16
  • Pipes may be placed in the preferred direction without fastening
  • More flexible than a hot-wire cut or extruded insulation board
  • 100% recyclable
  • Eligible to receive points as part of a LEED® project


HYDROFOAM® is used for the insulation under the concrete slab. It meets the needs of residential, commercial, industrial and institutional constructions.


"1 500 linear feet of heat pipes laid in 45 minutes! It is about 8 times faster than the traditional installation method." -A builder using HYDROFOAM®

For more information on this product, go to the Technical Library.

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Custom Hydrofoam®

For installations requiring a board with a custom thickness, you can get a hot-wire cut HYDROFOAM® board with linear grooves at a thickness that meets your own specifications.