Nelson Lumber Company Ltd.
Nelson Lumber Company Ltd.
HydroFoam Technical Details




The easy insulation for radian heat.

HydroFoam™ is the ideal radiant floor insulation product for residential and commercial construction projects that increases comfort and energy efficiency. HydroFoam™ maximizes radiant floor heating by ensuring the heat is dispersed evenly throughout the entire floor area, providing building occupants with a comfortable living and working environment. HydroFoam™ offers installers a lightweight high density expanded polystyrene (EPS) product that increases installation speeds, is easily cut to meet any angle or radius while providing up to R-16 insulation value.

Installation is fast and easy compared to traditional foam insulation.The 4’ x 4’ (1.2 m x 1.2 m) boards, available in two thickness, are easily installed with an overlapping interlock on all four sides, ensuring the boards are locked in place during installation. HydroFoam™ utilizes a 360° multidirectional friction fit anchor system that eliminates the need for wire mesh.  Radiant heat piping is easily stepped into place in any direction required. 


Product Highlights:

• Insulation under the concrete slab
• 4’ x 4’ (1.2 m x 1.2 m) molded boards
• Available thicknesses:   2½” (64 mm) - R10 (RSI 1.76)
  As a special order: 4” (100mm) - R16 (RSI 2.47)
• Multi-directional anchoring for ½” (13 mm) pipes
• Shiplap/interlocking on all 4 sides
• Eco-friendly. No CFC’s or HCFC’s
• 100% recyclable
• Resistant to water and moisture
• Can contribute to points under LEED®   NC programs

Approximately 1500 li. ft. (457 m) of pipe can be placed in 45 minutes when using HydroFoam TM
Each board covers 16 sq. ft. (1.49 m2) of surface


Sheet Thickness

2 1/2” (64 mm)

4” ( 100 mm)

Sheet Size

4’ x 4’ (1.2 m x 1.2 m)

4’ x 4’ (1.2 m x 1.2 m)




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Nelson Lumber provides one of the best price guarantees in the industry, and is the leading supplier of commercial and residential building supplies for renovations and new home constructions for home builders in the Edmonton, Grande Prairie, and surround Alberta Areas. We design and offer top quality climate controlled manufacturing of custom pre manufactured wall panels & systems, roof and floor trusses, stairs, and customized prefab solutions for the most cost effective time saving house construction. We are your full service builder suppliers of foundations, professional tools and hardware, insulation, energy efficient doors & windows, drywall, luxury trim & moulding, shelving, railings, siding & shingles, and complete lines of interior and exterior finishing products.