Cavity Walls: U Values (W/m2k) for Fully Filled Cavity Walls Constructed using Rendered Outer Leaf 1

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U-Values for Fully Filled Cavity Walls Using Celcon Solar Aircrete Blocks

U-Values for Fully Filled Cavity Walls Using Celcon Standard Aircrete Blocks

U-Values for Fully Filled Cavity Walls Using Celcon Hi-Strength Aircrete Blocks

U-Values for Fully Filled Cavity Walls Using Celcon Solar Aircrete Blocks

 

Inner Leaf: With 10mm Joints

 

Solar

 

 

Jumbo Plus

Normal/Plus

 

Internal Finish

100
(mm)

100 (mm)

115 (mm)

125 (mm)

150 (mm)

50mm Jablite EPS70

Dense plaster

0.41

0.41

0.40

0.38

0.36

Lwt plaster

0.40

0.40

0.39

0.38

0.35

12.5mm plasterboard on dabs

 

0.38

 

0.39

 

0.37

 

0.36

 

0.34

50mm Dritherm

Dense plaster

0.39

0.39

0.38

0.37

0.35

Lwt plaster

0.38

0.37

0.37

0.36

0.34

12.5mm plasterboard on dabs

 

0.37

 

0.37

 

0.36

 

0.35

 

0.33

65mm Dritherm/IsowoolCWS/Rockwool

Dense plaster

0.34

0.34

0.33

0.32

0.31

Lwt plaster

0.33

0.34

0.32

0.32

0.30

12.5mm plasterboard on dabs

 

0.32

 

0.33

 

0.31

 

0.31

 

0.29

75mm Jablite EPS70

Dense plaster

0.32

0.32

0.31

0.31

0.29

Lwt plaster

0.32

0.32

0.31

0.30

0.29

12.5mm plasterboard on dabs

 

0.31

 

0.31

 

0.30

 

0.29

 

0.28

100mm DrithermPLUS/Rockwool

Dense/lwt plaster

0.25

0.26

0.25

0.25

0.24

12.5mm plasterboard on dabs

 

0.25

 

0.25

 

0.24

 

0.24

 

0.23

U-Values for Fully Filled Cavity Walls Using Celcon Standard Aircrete Blocks

 

Inner Leaf: With 10mm Joints

 

Standard

 

 

Jumbo Plus

Normal/Plus

 

Internal Finish

100
(mm)

100

(mm)

125 (mm)

150 (mm)

50mm Jablite EPS70

Dense plaster

0.44

0.44

0.42

0.40

Lwt plaster

0.43

0.43

0.41

0.39

12.5mm plasterboard on dabs

0.41

0.42

0.39

0.37

50mm Dritherm

Dense plaster

0.42

0.42

0.40

0.38

Lwt plaster

0.41

0.41

0.39

0.37

12.5mm plasterboard on dabs

0.39

0.40

0.38

0.36

65mm Dritherm/IsowoolCWS/Rockwool

Dense plaster

0.36

0.36

0.35

0.33

Lwt plaster

0.35

0.36

0.34

0.32

12.5mm plasterboard on dabs

0.34

0.34

0.33

0.31

75mm Jablite EPS70

Dense plaster

0.34

0.34

0.33

0.31

Lwt plaster

0.33

0.34

0.32

0.31

12.5mm plasterboard on dabs

0.32

0.33

0.31

0.30

100mm DrithermPLUS/Rockwool

Dense/lwt plaster

0.27

0.27

0.26

0.25

12.5mm plasterboard on dabs

0.26

0.26

0.25

0.24

U-Values for Fully Filled Cavity Walls Using Celcon Hi-Strength Aircrete Blocks

 

Inner Leaf: With 10mm Joints

 

Hi-Strength

 

 

Jumbo Plus

Normal/Plus

 

Internal Finish

100
(mm)

100

(mm)

125 (mm)

150 (mm)

50mm Jablite EPS70

Dense plaster

0.46

0.47

0.44

0.42

Lwt plaster

0.45

0.45

0.43

0.41

12.5mm plasterboard on dabs

0.43

0.43

0.41

0.39

50mm Dritherm

Dense plaster

0.44

0.44

0.42

0.40

Lwt plaster

0.43

0.43

0.41

0.39

12.5mm plasterboard on dabs

0.41

0.41

0.39

0.38

65mm Dritherm/IsowoolCWS/Rockwool

 

Dense plaster

0.38

0.38

0.36

0.35

Lwt plaster

0.37

0.37

0.36

0.34

12.5mm plasterboard on dabs

0.36

0.36

0.34

0.33

75mm Jablite EPS70

Dense plaster

0.35

0.36

0.34

0.33

Lwt plaster

0.35

0.35

0.34

0.33

12.5mm plasterboard on dabs

0.34

0.34

0.32

0.31

100mm DrithermPLUS/Rockwool

Dense/lwt plaster

0.28

0.28

0.27

0.26

12.5mm plasterboard on dabs

0.26

0.27

0.26

0.25

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

440 x 215 x 100mm blocks with 10mm joints

Note: A fully filled cavity wall construction is not suitable for all exposure conditions.

Source: H+H Celcon

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

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