Many companies offering red ash testing are simply jobbing builders who are looking to carry out lucrative floor repairs. They have little, if any, scientific competence- please read this article to see what can happen if you choose the wrong "expert".
To carry out the test we need to remove a small amount of infill from beneath the floor slab of the property, inspect the condition of the concrete through the depth of the floor and chemically analyse the infill. This is normally carried out in less than one hour with minimal disruption. We also need to inspect the interior floors and exterior walls of the property. We can then prepare a report which will give an indication of the risk of sulphate attack in the future.
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