Cavity Walls: U Values (W/m2k) for Tiles and Timber on Battens on Standard Blockwork

Inner Leaf: With 10mm Mortar Joints

Solar

Jumbo Plus

Normal/Plus

Tiles on Battens

Cavity

Internal Finish

100 (mm)

100 (mm)

115 (mm)

125 (mm)

150 (mm)

Clear

50mm ThermaLineSUPER

0.27

0.27

0.26

0.26

0.25

Partially Filled 20mm Kingspan TW50

Dense Plaster

0.33

0.34

0.33

0.32

0.30

Fully Fitted
50mm Dritherm

Dense Plaster

0.32

0.33

0.32

0.31

0.30

Timber on Battens

Clear

50mm ThermaLineSUPER

0.26

0.26

0.25

0.25

0.24

Partially Filled 20mm Celotex CW3020

Dense Plaster

0.31

0.32

0.31

0.30

0.29

Fully Fitted 50mm IsowoolCWS/Rockwool

Dense Plaster

0.31

0.31

0.30

0.30

0.28

U-Values for Tile and Timber Batten Using Celcon Standard Aircrete Blocks

Inner Leaf: With 10mm Mortar Joints

Standard

Jumbo Plus

Normal/Plus

Tiles on Battens

Cavity

Internal Finish

100 (mm)

100 (mm)

115 (mm)

125 (mm)

150 (mm)

Clear

50mm ThermaLineSUPER

0.28

0.29

0.28

0.27

0.26

Partially Filled 20mm Kingspan TW50

Dense Plaster

0.35

0.36

0.35

0.34

0.33

Fully Fitted 50mm Dritherm

Dense Plaster

0.34

0.35

0.34

0.33

0.32

Timber on Battens

Clear

50mm ThermaLineSUPER

0.27

0.27

0.26

0.26

0.25

Partially Filled 20mm Celotex CW3020

Dense Plaster

0.33

0.34

0.33

0.32

0.31

Fully Fitted 50mm IsowoolCWS/Rockwool

Dense Plaster

0.33

0.33

0.32

0.32

0.30

U-Values for Tile and Timber Battens Using Celcon Hi-Strength Aircrete Blocks

Inner Leaf: With 10mm Mortar Joints

Hi-Strength

Jumbo Plus

Normal/Plus

Tiles on Battens

Cavity

Internal Finish

100 (mm)

100 (mm)

115 (mm)

125 (mm)

150 (mm)

Clear

50mm ThermaLineSUPER

0.29

0.29

0.29

0.28

0.28

Partially Filled 20mm Kingspan TW50

Dense Plaster

0.37

0.37

0.36

0.36

0.34

Fully Fitted 50mm Dritherm

Dense Plaster

0.36

0.36

0.35

0.35

0.33

Timber on Battens

Clear

50mm ThermaLineSUPER

0.28

0.28

0.27

0.27

0.26

Partially Filled  20mm Celotex CW3020

Dense Plaster

0.34

0.35

0.34

0.33

0.32

Fully Fitted 50mm IsowoolCWS/Rockwool

Dense Plaster

0.34

0.34

0.33

0.33

0.32

Block format:
Normal: 440mm long x 215mm high
Plus: 610mm long x 215mm high
JumboPlus: 610mm long x 270mm high

Block face format as inner leaf x 100mm thick with 10mm joints

This information has been sourced, reviewed and adapted from materials provided by H + H Celcon.

For more information on this source, please visit H + H Celcon.

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  • Chicago

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