The Thermalite trench block is designed for use in constructing foundations and below-ground walls. Manufactured from lightweight aircrete, it features a tongue and groove profile to assist with block alignment and stability during laying.
Typically used to build up from strip footings to ground level, this block's large size reduces the number of courses needed on site. Its thermal properties help limit heat loss at the base of external walls, making it suitable for both domestic and light commercial builds.
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