What is Insulslab?

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What is Insulslab?

In a nutshell, Insulslab is a complete BBA-approved system to replace traditional piled and semi-raft house foundations.

Foundation to finished floor level and fully insulated in one operation, the Insulslab Steel Fibre Reinforced Concrete (SFRC) system allows for quick, efficient foundation development even on challenging sites. A suitable replacement for traditional piled and semi-raft foundations, Insulslab provides a wide range of physical and technical benefits, offering both speed of construction and excellent thermal performance.


Insulslab, using AcelorMittal Steel Fibres, is BBA certified (visit www.insulslab.com for full details) and is accepted by the NHBC/LABC and Premier Guarantees.

AcelorMittal is the only steel fibre manufacturer with a production facility in the UK and the world’s largest steel producer, with a total of 116 million tonnes of crude steel produced annually.


The Insulslab house foundation system is suitable for 5 or more semi-detached, detached, terraced or apartment dwellings.

Benefits in Piled Foundation

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Piled Foundation System



Benefits in Semi-Raft Foundation

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Semi Raft Foundation System

Insulslab 4-Week Challenge

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Insulslab 4-week Challenge


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