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 May 27, 2024 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. 27 May 2024. <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 May 27, 2024).

  • Harvard

    H + H Celcon. 2019. Cavity Walls: U Values (W/m2k) for Partially Filled Cavity Walls Using Outer Leaf Aircrete Blocks. AZoBuild, viewed 27 May 2024, https://www.azobuild.com/article.aspx?ArticleID=7907.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.