Foundation Blocks – Aircrete Blocks for Use Below Damp Proof Course (DPC)

Celcon Foundation Blocks

Celcon Foundation blocks are ideal for use below DPC level. They are easily laid and being less than half the density of traditional masonry offer considerable improvements in the speed at which dense blocks can be laid. Unlike aggregate blocks, which require two skins with a concrete filled cavity, Celcon Foundation blocks can be used as a single skin, so there are no wall ties and no cavity to fill. Using Celcon Foundation blocks the footings can be backfilled as soon as the installation is complete, usually on the same day.

Further Benefits of Celcon Blocks

A further benefit of Celcon Foundation blocks is the reduction of ground floor heat loss, which is most critical at the perimeter of the floor. In certain situations this removes the requirement for further costly floor insulation.

Technical Data

Foundation Blocks
	Foundation (Standard)	Foundation 7 (Hi-Seven)	Foundation 10^e (Hi-Ten^e)
Average density (kg/m³)	600	750	750
Compressive strength (N/mm²)	3.5 (3.6*)	7.0 (7.3*)	8.4 (8.7*)
Thermal conductivity (W/m K) (when used below dpc)	0.25	0.32	0.32
Vapour resistivity	60MN s/gm	60MN s/gm	60MN s/gm
Diffusion factor	12	12	12
BBA Certificate No.	01/3816	01/3816	01/3816

*When referencing the European Standard BS EN 771-4: 2003 the compressive strength values in brackets should be used.

Handling weights – maximum for handling and transportation (kg1)
Block Thickness (mm)	200	215		255	265	275	300
Foundation (Standard)	14.6	15.7		18.6	19.3	20.1	21.9
Foundation 7 (Hi-Seven)	16.7	18.0		18.6	19.3	20.1	21.9
Foundation 10^e(Hi-Ten^e)	16.7	18.0		21.3	22.2	23.0	25.1
Pack weights
Foundation (excl. pallet)	729	784	744		773	802	656
Foundation 7 (excl. pallet)	837	900	854		887	921	753
Foundation 10^e (excl. pallet)	837	900	854		887	921	753

Blocks over (20kg) CONIAC recommendation

†These weights are at typical block moisture content when laid. Some manufacturers may quote weights which have not allowed for this.

Note: CONIAC recommendation for repetitive manual handling of blocks – 20kg or more should be two-person or mechanically handled.

Celcon Solar Blocks

Celcon Solar blocks can also be used for foundation work. BBA Certificate 01/3816 confirms that all Celcon blocks are suitable for use in soil conditions from DS1 to DS4. For DS5 or contaminated sites tanking will be required. Extensive use and BBA approval of Celcon Foundation blocks have shown their exceptional resistance to freeze thaw conditions likely to occur below DPC level.

Foundation blocks (440mm long x 215mm high)
T - Block thickness (mm)	200	215	255	265	275	300
W - Pack width (mm)	1000	1075	1020	1060	1100	900
No. of blocks per pack	50	50	40	40	40	30
m² per pack (10mmmortar joints)	5	5	4	4	4	3
Available ex stock	●	●▪	●		●▪	●▪

Foundation ● Foundation 7 ▪ Foundation 10^e

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

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APA
H + H Celcon. (2019, April 23). Foundation Blocks – Aircrete Blocks for Use Below Damp Proof Course (DPC). AZoBuild. Retrieved on November 21, 2024 from https://www.azobuild.com/article.aspx?ArticleID=7862.
MLA
H + H Celcon. "Foundation Blocks – Aircrete Blocks for Use Below Damp Proof Course (DPC)". AZoBuild. 21 November 2024. <https://www.azobuild.com/article.aspx?ArticleID=7862>.
Chicago
H + H Celcon. "Foundation Blocks – Aircrete Blocks for Use Below Damp Proof Course (DPC)". AZoBuild. https://www.azobuild.com/article.aspx?ArticleID=7862. (accessed November 21, 2024).
Harvard
H + H Celcon. 2019. Foundation Blocks – Aircrete Blocks for Use Below Damp Proof Course (DPC). AZoBuild, viewed 21 November 2024, https://www.azobuild.com/article.aspx?ArticleID=7862.