Apollo Energy Research - Wall Examples

U-Values – Wall Examples

To act as a radiant barrier the HRM must be installed facing at least one air space, usually 19 to 25mm. 23mm is preferred as this allows electrical and piped services to be installed in front of the membrane. Most of the heat conducting through the structure and crossing the air space as infrared energy is blocked. The air within the air space will eventually warm and rise (Convection). However, the warmed air cannot escape as all joins between adjacent HRM sheets and structural components are sealed using the company’s heat reflecting (HR) self-adhesive tape.

Please see a selection of sample U-Value Calculations for walls below. To see further examples please click here to download our Enhanced U-Value Document.

Wall U-Value Examples

Standard Timber Frame House

Without Thermo-Foil® ES                                               With Thermo-Foil® ES

U – Value – 0.30                                                            U-Value – 0.249

Timber Frame Warm Frame or Hybrid

Without Thermo-Foil® ES                                               With Thermo-Foil® ES

U – Value – 0.297                                                          U-Value – 0.248

Masonry Unfilled Cavity Wall

Without Thermo-Foil® ES                                               With Thermo-Foil® ES

U – Value – 1.55                                                            U-Value – 0.759

Masonry Solid Wall

Without Thermo-Foil® ES                                               With Thermo-Foil® ES

U – Value – 2.08                                                            U – Value – 0.871

Light Steel Warm Frame

Without Thermo-Foil® ES                                               With Thermo-Foil® ES

U – Value – 0.351                                                          U – Value – 0.284

Internal Partition Wall

Without Thermo-Foil® ES                                               With Thermo-Foil®ES

U – Value – 1.742                                                          U – Value – 0.802 (1 layer) 0.521 (2 layers)

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