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Underfloor Heating and Insulation Boards

Overview


Almost 50% of heat created by underfloor heating is absorbed by the concrete slab when the heating is first switched on.

Underfloor heating insulation boards

A recent lab test result indicates the advantage of using underfloor heating insulation boards for floor heating. Firstly there is a signficant reduction in heat up time. Secondly a saving in heat loss through the cement slab means more warmth is reflected into the floor tiles.

This means less energy is required to heat the floor tiles leading to a reduction in operating costs.

Floor Heating Insulation Lab Results

The underfloor heating insulation boards are waterproof, provide thermal insulation, and even have acoustic insulating properties. The thermal insulation properties make them the ideal solution to compliment our energy efficient electric floor heating range .



Features



  • High compressive strength (withstand 30 t/m2)
  • Rigid
  • Waterproof
  • Excellent heat insulation
  • Sound insulation (20 decibels)
  • High U-value (2.7 W/m2k for 10mm)
  • Extruded polystyrene closed cell structure retains R-value even in moist conditions
  • Easy to cut with a knife or saw
  • Light weight can be carried by one person ,10mm board is 3 kgm/m2
  • Marmox is environmentally friendly, it is CFC and HCFC freex



Specification



Board Dimensions: 1250mm (L) x 600mm (W) x 10mm (H)
Coeff of expansion: 30×10-6
Density: 36 Kg/m³
Thermal conductivity: 0.027
Thermal conductivity (5 years): 0.032
Compressive strength: 300 KN/m²
Water absorption (immersion): 0.2% by vol
Water absorption (capillary): NIL
Flammability: class 0, B1
Coeff of expansion: 30×10-6




Installation



under floor heating insulation

  • The concrete surface must be clean before applying the board.
  • New concrete slab should be cured before fixing Marmox insulation boards.
  • Apply a bed of flexible adhesive to the concrete slab with a notched trowel, boards then to be thoroughly bedded in a staggered pattern, ensuring that no voids remain beneath them.
  • When the tile adhesive dry, tape all the joints with the fibreglass tape, then install the heating element, and tile with flexible tile adhesive.
  • Movement joints must not be bridged by the Marmox construction board.
  • Timber floors must be rigid, checked for flatness.
  • The floor must be dry. Apply suitable tile adhesive layer with notched trowel. Boards then laid in a staggered pattern, fully bedded to ensure no voids remain under the boards.
  • When the adhesive dries apply fibreglass tape to the joints.
  • Secure the boards with screws and washers. Use 15 screws per board with min. 30 mm from the edge. Then install the heating element and tile using flexible tile adhesive.
  



For professional installation enquiries (across NSW) or Trade/DIY supply enquiries, contact Amuheat  on (02) 9114 6934 or upload your request and plans through our website.