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Fixed between Joists Insulation

Under-Floor Insulation System:
Fixed between Joists with Reflective Still Airspace

Heat-Ceil placed with a reflective airspace below flooring improves thermal values by providing an extra insulation layer from reflective still air films or saves money with a thinner sheet of insulation while maintaining required Total R.

Heat-Ceil combines the exceptional thermal qualities of EPS and reflective air films into one easy to use product that requires no special masks or clothing for installation.

Product Description: Heat-Ceil Insulation is a light weight rigid board made of an SL grade polystyrene core with pure aluminum foil laminated to both sides that reflects 97% of radiant heat, contains fire retardant and is water resistant.

Sheeting Sizes Floor Joist Centre's ?mm x 1200mm Cut to fit between joists. Sheeting up to 5000mm x 1200mm for placing bottom of floor joists.

Example: Total R 2.0 summer climate achieved from Building Insulation System described:

Heat Ceil

Aluminium Foil reflects 97% of radiant heat. 60kg Light Weight Pallets


Total Thermal Resistance values based on Floor System described below:

Sub-floor Exposed or Enclosed /Heat-Ceil / Reflective still Air Space /Timber Flooring / Linoleum Floor Coverings

Total Thermal Resistance Values Under-floor Insulation Systems
Heat-Ceil Fixed between Joist with Reflective Airspace

Building Sub-floor

Heat-Ceil Insulation

Reflective Still Air Space

Total R Value Summer/Heat Flow In

Total R Value Winter/Heat Flow out

Insulation Cavity (Total)

Exposed 50mm 38mm Rt 2.0 Rt 2.7 88mm
45mm 100mm Rt 2.0 Rt 3.6 145mm
25mm 63mm Rt 1.5 Rt 2.7 88mm
Enclosed 50mm 38mm Rt 2.7 Rt 4.0 88mm
25mm 63mm Rt 2.2 Rt 4.0 88mm
20mm 100mm Rt 2.0 Rt 4.2 120mm

* Determinations Based upon AS/NZS 4859.1:2002/Amdt 1 2006, Materials for Thermal insulation of buildings.

Larger Reflective Airspaces or Direct fix method may also be used.

Changes to the building systems described above will alter the total thermal resistance value.

Ceilite provide a Thermal Insulation Evaluation from certified engineer for any specified building system.

The Building Code of Australia also list the thermal properties of both polystyrene and reflective airspaces.

We invite you to contact us about having your individual building system tested or to arrange a completely independent 6 star energy efficiency report.

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