New answers tagged chimney
One trick is to undersize the holes required for the rawl plugs you use. E.g. if a 6mm bit is specified for the plugs, use a 4mm bit to drill the hole. I've used this trick to work with older/crumbly plaster walls many times (both on brick and with wood lathe). Note this is really just a workaround - RedGrittyBrick has the answer for a permanent fix to ...
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