Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks

 

Inner Leaf: With 10mm Joints

Solar

Jumbo Plus

Normal/Plus

Minimum 50mm Clear Cavity

Internal Finish

100 (mm)

100 (mm)

115 (mm)

125 (mm)

150 (mm)

200 (mm)

50mm Jablite EPS70

Dense plaster

0.39

0.39

0.38

0.37

0.34

0.31

Lwt plaster

0.38

0.38

0.37

0.36

0.34

0.30

12.5mm plasterboard on dabs

0.37

0.37

0.36

0.35

0.33

0.29

50mm Dritherm

Dense plaster

0.38

0.38

0.37

0.36

0.33

0.30

Lwt plaster

0.37

0.37

0.36

0.35

0.33

0.29

12.5mm plasterboard on dabs

0.35

0.35

0.34

0.33

0.31

0.28

25mm Kingspan TW50

Dense plaster

0.38

0.38

0.37

0.36

0.33

0.30

Lwt plaster

0.37

0.37

0.36

0.35

0.33

0.29

12.5mm plasterboard on dabs

0.36

0.36

0.35

0.34

0.32

0.29

30mm Kingspan TW50

Dense plaster

0.35

0.35

0.34

0.33

0.31

0.38

Lwt plaster

0.34

0.34

0.33

0.32

0.31

0.28

12.5mm plasterboard on dabs

0.33

0.33

0.32

0.31

0.30

0.27

35mm Celotex CW3000

Dense Plaster

0.33

0.33

0.32

0.31

0.30

0.27

Lwt plaster

0.32

0.32

0.31

0.31

0.29

0.26

12.5mm plaster on dabs

0.31

0.32

0.30

0.30

0.28

0.26

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

Inner Leaf: With 10mm Joints

Standard

Jumbo Plus

Normal/Plus

Minimum 50mm Clear Cavity

Internal Finish

100 (mm)

100 (mm)

125 (mm)

150 (mm)

190 (mm)

50mm Jablite EPS70

Dense plaster

0.42

0.42

0.40

0.38

0.35

Lwt plaster

0.41

0.41

0.39

0.37

0.34

12.5mm plasterboard on dabs

0.39

0.39

0.37

0.36

0.33

50mm Dritherm

Dense plaster

0.40

0.41

0.38

0.36

0.34

Lwt plaster

0.39

0.40

0.38

0.36

0.33

12.5mm plasterboard on dabs

0.37

0.38

0.36

0.34

0.32

25mm Kingspan TW50

Dense plaster

0.40

0.41

0.38

0.36

0.34

Lwt plaster

0.39

0.40

0.38

0.36

0.33

12.5mm plasterboard on dabs

0.38

0.38

0.36

0.35

0.32

30mm Kingspan TW50

Dense plaster

0.37

0.37

0.35

0.34

0.31

Lwt plaster

0.36

0.36

0.35

0.33

0.31

12.5mm plasterboard on dabs

0.35

0.35

0.33

0.32

0.30

35mm Celotex CW3000

Dense plaster

0.35

0.35

0.33

0.32

0.30

Lwt plaster

0.34

0.34

0.33

0.31

0.29

12.5 plasterboard on dabs

0.33

0.33

0.32

0.30

0.29

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

Inner Leaf: With 10mm Joints

Hi-Strength

Jumbo Plus

Normal/Plus

Minimum 50mm Clear Cavity

Internal Finish

100 (mm)

100 (mm)

125  (mm)

140 (mm)

190 (mm)

50mm Jablite EPS70

Dense plaster

0.44

0.44

0.42

0.41

0.37

Lwt plaster

0.43

0.43

0.41

0.40

0.36

12.5mm plasterboard on dabs

0.41

0.41

0.39

0.38

0.35

50mm Dritherm

Dense plaster

0.42

0.42

0.40

0.39

0.36

Lwt plaster

0.41

0.41

0.39

0.38

0.35

12.5mm plasterboard on dabs

0.39

0.39

0.38

0.37

0.34

25mm Kingspan TW50

Dense plaster

0.42

0.42

0.40

0.39

0.36

Lwt plaster

0.41

0.41

0.39

0.38

0.35

12.5mm plasterboard on dabs

0.40

0.40

0.38

0.37

0.34

30mm Kingspan TW50

Dense plaster

0.38

0.39

0.37

0.36

0.33

Lwt plaster

0.38

0.38

0.36

0.35

0.33

12.5mm plasterboard on dabs

0.36

0.36

0.35

0.34

0.32

35mm Celotex CW3000

Dense plaster

0.36

0.36

0.35

0.34

0.32

Lwt plaster

0.35

0.36

0.34

0.33

0.31

12.5 plasterboard on dabs

0.34

0.34

0.33

0.32

0.30

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

215 x 65 x 102.5mm bricks 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.

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    H + H Celcon. (2019, April 23). Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks. AZoBuild. Retrieved on October 13, 2019 from https://www.azobuild.com/article.aspx?ArticleID=7907.

  • MLA

    H + H Celcon. "Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks". AZoBuild. 13 October 2019. <https://www.azobuild.com/article.aspx?ArticleID=7907>.

  • Chicago

    H + H Celcon. "Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks". AZoBuild. https://www.azobuild.com/article.aspx?ArticleID=7907. (accessed October 13, 2019).

  • Harvard

    H + H Celcon. 2019. Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks. AZoBuild, viewed 13 October 2019, https://www.azobuild.com/article.aspx?ArticleID=7907.

Ask A Question

Do you have a question you'd like to ask regarding this article?

Leave your feedback
Submit