Wall plugs into Thermalite blocks

[Tim Watts]

On Saturday 05 October 2013 22:12 Tricky Dicky wrote in uk.d-i-y:

+1 on the Fischer plug - thay are very good in thermalite.

[Andrew Gabriel]

I found instructions for plugging thermalite somewhere once. Two important things - don't use a masonary bit and don't use hammer action - these both destroy the structure around the hole.

You need a parallel sided cutting bit, to drill a clean sided parallel hole. A cheap bit is usually fine, as these don't have a long life drilling into cement anyway.

A soft plug (e.g. plastic) may distribute forces more evenly, avoiding pressure concentrations which canbreak the block structure around the hole.