I have been redecorating my sons house for the past month and it's now time to fit the curtain rails and blinds.
My first effort at drilling into the wall was met with more resistance than l've ever had before, 12/15mm in and the lintel ain't having any of it, Bosch hammer drill and nice new Stanley drills.
Whats my best bet please, don't mind hiring the tool for the job as l just need to get it done.
Many thanks in advance.