Lintel above windows

[cocoots100]

I have had a couple of instances where I am fixing curtain rails and drilling into the wall I only get half inch in until the drillbit hits an impenetrable substrate. Does anyone know what this is and how can I drill into it? Tried masonry and metal bits but no joy.

 

[Static]

Like your subject says, yes that will be probably be the lintel. Not knowing where your window is (office/house/flat/orbit space station) can only guess that its either concrete of steel.
Try use small drill bit (ie. 6mm) to get hole started them progress up.

 

[matt73]

get a good drill

 

[noseall]

you might even be hitting the re-bar in a concrete lintel...bad luck! a good s.d.s bosch pro will usually go through anything.

 

[Nige F]

even a cheap SDS drill will go thru `crete.....gotta be worth buying one even for a few diy jobs

 

[BOB NUTS]

(if feasible)

if you start drilling 150mm past the window reveal then you should be past where the lintel is sat (as most are installed with the minimum bearing)