Psi Value Calculator | IG Lintels
Hi-therm+

Wall Construction incorporating Hi-therm+ Lintel.

External Leaf

Cavity Width

Cavity Fill

Insulation

Internal Leaf

Ext. Leaf: Brick 0.770
  • Cavity Width
    • 100mm
    • 125mm
    • 150mm
  • Cavity Fill
    • Full Fill
    • Partial Fill
  • Insulation
    • Rigid insulation board 0.022 W/mK
    • Rigid insulation board 0.018 W/mK
    • Cavity slabs 0.037 W/mK
    • Mineral wool / Blown fibre 0.032 W/mK
    • Pumped bead 0.033 W/mK
    • Mineral wool / Blown fibre 0.034 W/mK
  • Internal Leaf
    • Aircrete block 0.6 conductivity
    • Aircrete block 0.11 conductivity
    • Aircrete block 0.15 conductivity
    • Aircrete block 0.19 conductivity
    • Ultra lightweight aggregate block 0.24 conductivity
    • Ultra lightweight aggregate block 0.28 conductivity
    • Ultra lightweight aggregate block 0.31 conductivity
    • Medium dense block 0.45 conductivity
    • Medium dense block 0.51 conductivity
    • Medium dense block 0.65 conductivity
    • Dene block 1.13 conductivity
    • Aircrete block 1.33 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Dene block 1.13 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Rigid insulation board 0.022 W/mK
    Dene block 1.33 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.057 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.055 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.054 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.055 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.053 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.052 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.052 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Dene block 1.13 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Pumped bead 0.033 W/mK
    Aircrete block 1.33 conductivity

  • Psi Value 0.049 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.056 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.054 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.052 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.053 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.053 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.052 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Dene block 1.13 conductivity

  • Psi Value 0.051 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Full fill
    Cavity slabs 0.037 W/mK
    Aircrete block 1.33 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.067 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.066 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.065 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.065 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.067 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Dene block 1.13 conductivity

  • Psi Value 0.064 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.018 W/mK
    Aircrete block 1.33 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.065 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.063 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.062 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.061 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.060 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Dene block 1.13 conductivity

  • Psi Value 0.059 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    100mm
    Partial fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 1.33 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.6 conductivity

  • Psi Value 0.070 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.11 conductivity

  • Psi Value 0.070 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.15 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Aircrete block 0.19 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.24 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.28 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Ultra lightweight aggregate block 0.31 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.45 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.51 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Medium dense block 0.65 conductivity

  • Psi Value 0.069 W/mK

    Wall Construction Selected

    Cavity width:
    Cavity fill:
    Insulation:
    Internal leaf:

    125mm
    Full fill
    Rigid insulation board < 0.022 W/mK
    Dene block 1.13 conductivity