The walls when drilled produce black dust and just crumble. Solid concrete blocks probably. Is there a recommended drill bit to combat this issue to fix securely? thanks
Hi roberto154, You probably have a wall built with breeze blocks. Try using an oversize wall plug - one that needs hammering into the hole. If this doesn’t work you will have to use anchor bolts set in the holes using an anchorfix resin. Use a straw to blow dust out of the drilled hole. Regards S
