HYDROFOAM Radiant Heat Insulation

HYDROFOAM® maximizes radiant heat insulation for residential projects by ensuring the heat is dispersed evenly throughout the entire floor area, providing homeowners with a more comfortable living and working environment.

Nudura innovation continues with HYDROFOAM®. Installation is fast and easy compared to traditional radiant heat insulation, which requires multiple steps to run radiant heat piping. The 4’ x 4’ (1.2 m x 1.2 m) boards are 2 1/2“(64 mm) thick and easily installed with an overlapping interlock on all four sides, ensuring the boards are locked in place during installation.

HYDROFOAM® utilizes a 360° multi-directional friction fit anchor system in which radiant heat piping is easily stepped into place in any direction required. It offers installers a lightweight, and high density expanded polystyrene (EPS) radiant heat insulation product that increases installation speeds, is easily cut to meet any angle or radius while providing R-10 of insulation value.


  • Insulation under the concrete slab
  • Fast and efficient installation
  • 4’ x 4’ molded boards
  • Multi-directional anchoring for 1/2” (13 mm) pipes
  • Ship lapped/interlocking on all 4 sides
  • Superior Performance Values – 2 1/2” (64 mm) board up to R-10
  • 4” (100 mm) board up R-16 available by special order only
  • Lightweight and easy to handle
  • Increased comfort & energy savings
  • Eco-Friendly – no CFCs or HCFCs
  • 100% recyclable
  • Resistant to water and moisture
  • Can contribute to points under LEED® NC Programs

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