HeidelbergCement in the United Kingdom

Partitions

When used to construct partitions, Thermalite® blocks reduce sound transmission between rooms and provide a secure fixing for shelves, radiators and other fittings.

Applications
Thermalite® Turbo, Shield, Party Wall, Hi-Strength and Paint Grade Smooth blocks are suitable for the construction of internal partition walls above and below d.p.c. level. To meet the requirements of Approved Document E, ‘internal wall type D’, a plasterboard finish will need to be applied to both sides. .

Non-loadbearing walls and partitions (unplastered)
The tables below are based on BS 5628: Part 3. (Plaster finishes tend to increase the stability of a wall.) For advice on free-standing walls, please consult Hanson’s Product Services department.

Recommended block width (mm) for walls restrained at both ends and the top

Height of wall (m)	Length of wall (m)
	4.0	5.0	6.0	7.0	8.0	9.0	10.0	11.0	12.0
2.3	75	75	75	75	75	90	90	90	90
2.4-2.6	75	75	75	75	90	90	90	90	90
2.7	75	75	75	90	90	90	90	90	90
2.8-3.0	75	75	75	90	90	90	100	100	100
3.1-3.3	75	75	90	90	90	100	100	115	115
3.4-3.5	75	90	90	90	100	100	125	125	125
4.0	90	90	90	100	100	140	140	140	140
4.5	90	100	100	140	140	140	140	140	140
5.0	100	100	125	140	140	140	140	140	140
5.5	100	125	140	140	140	140	140	140	150
6.0	100	125	140	140	140	140	140	150	150

Recommended block width (mm) for walls restrained at both ends but not the top

Height of wall (m)

2.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0

2.3 75 90 100 140 140 140 190 190 190 200

2.6 75 90 100 140 140 140 190 190 190 200

2.7 75 90 100 140 140 150 190 190 190 200

3.0 75 90 100 140 140 150 190 190 190 215

3.3 75 90 100 140 140 150 190 190 190 215

3.5 75 90 140 140 140 150 190 190 200 215

4.0 75 100 140 140 140 190 190 190 200 215

4.5 75 100 140 140 140 190 190 190 200 215

5.0 75 100 140 140 150 190 190 190 215 255

5.5 75 115 140 140 150 190 190 200 215 255

6.0 75 115 140 140 150 190 190 200 215 255

Recommended block width (mm) for walls restrained at the top only

Maximum height (m) 2.25 2.7 3.0 4.2 4.5 5.7 6.0 6.45

Block thickness (mm) 75 90 100 140 150 190 200 215

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Height of wall (m)
	2.0	4.0	5.0	6.0	7.0	8.0	9.0	10.0	11.0	12.0
2.3	75	90	100	140	140	140	190	190	190	200
2.6	75	90	100	140	140	140	190	190	190	200
2.7	75	90	100	140	140	150	190	190	190	200
3.0	75	90	100	140	140	150	190	190	190	215
3.3	75	90	100	140	140	150	190	190	190	215
3.5	75	90	140	140	140	150	190	190	200	215
4.0	75	100	140	140	140	190	190	190	200	215
4.5	75	100	140	140	140	190	190	190	200	215
5.0	75	100	140	140	150	190	190	190	215	255
5.5	75	115	140	140	150	190	190	200	215	255
6.0	75	115	140	140	150	190	190	200	215	255

Maximum height (m)	2.25	2.7	3.0	4.2	4.5	5.7	6.0	6.45
Block thickness (mm)	75	90	100	140	150	190	200	215