On Jun 12, 10:38*am, Captain Windsock
wrote:
I want to drill a number of holes through the concrete floor of my
house. *This is to fix some heavy equipment to the floor. *I presume
there is a damp proof membrane which would be punctured.

Is this advisable to do? *Would injecting some sort of silicone into the
holes make good the damp proofing? Or what is the solution to my
problem?

--
Captain Windsock

The DPM is likely around 100mm down so you may well not come near it
Put some silicon down if you're worried