OT Non VW- Stone Drilling

[Titus A Duxass]

Hi All,
I have replace some doors on my barn as they are rotten and the hinge hanging points have broken out of the stonework.

The doors are approx 2m high and 0.5m wide (2 off - LH & RH).

The hinges were metal spikes set into the stone work and over a period of time one of the spikes has broken out, taking with it some of the surrounding stone work on the door jamb.

My plan is to place a plate on both the front and back of the jamb (Ca. 10cm thick) and secure the plates with four 8mm studs+nuts.
This means drilling through 10 cm of natural stone (type unknown) to let the 8 mm studding pass through.

Do I do this in one go with a 10mm SDS bit or step drill (6, 8 and finally 10) like you would in metal?

I would post some photos but I cannot access them at work.

[Titus A Duxass]

Maybe this will work.
The doors.
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[Titus A Duxass]

This is the problem.
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[Dazco]

A 10mm bit should go through in one shot as long as its a good quality one. Other alternative , possibly patch the hole you have now with epoxy stone putty then re drill through that.
Daz

[Titus A Duxass]

.......possibly patch the hole you have now with epoxy stone putty then re drill through that.
Daz

Interesting, have you got a maker or name for epoxy stone putty?

[clift_d]

I'd imagine he's talking about an epoxy repair mortar like the ones that get used for concrete repairs:

http://www.welco.co.uk/epoxy-repair-mor ... 7-012.html" onclick="window.open(this.href);return false;

The big problem with patching like that is that the existing stone around the patch needs to be good and solid. If it's at all crumbly or loose then the whole thing is just going to fall out in no time at all. Whether you would get a good enough bond to hold a new fixing or the original spike again is something you're just going to have to try.

If you decide to drill through and put a plate on instead, then try to use stainless steel stud if you can to avoid corrosion problems. In terms of drilling, take it slowly if you're not sure of your stone - maybe try drilling without hammer/ percussion initially, and don't put any holes too close to the jamb - leave at least 50mm preferably 75mm to any edge.

[Titus A Duxass]

If you decide to drill through and put a plate on instead, then try to use stainless steel stud if you can to avoid corrosion problems. In terms of drilling, take it slowly if you're not sure of your stone - maybe try drilling without hammer/ percussion initially, and don't put any holes too close to the jamb - leave at least 50mm preferably 75mm to any edge.

Cheers for the advice.
I intend to use stainless studding.

The holes could be a problem.
The jamb is 100mm wide and the plates are 100 wide by 200 high (5mm thick steel).
If I put a hole in each corner then two of the holes will be too close to the jamb edge.

Shall I just put 2 holes along the vertical centre line of the plate or 2 on the centre line and 2 long the edge that's is away from the edge of jamb.

The stone is solid with no crumbling.

[clift_d]

Two holes on the centre line will probably be enough to hold a plate that size to the wall - I assume that you're going to weld (attach) the hinge pin to one of the plates. Keeping away from the edge with any holes is about avoiding the new fixings breaking out the stone like the old spike did - and that should include the edge to the damaged area vertically.

[Titus A Duxass]

Two holes on the centre line will probably be enough to hold a plate that size to the wall - I assume that you're going to weld (attach) the hinge pin to one of the plates. Keeping away from the edge with any holes is about avoiding the new fixings breaking out the stone like the old spike did - and that should include the edge to the damaged area vertically.

Yes the hinge pin will be attached (eventually welded) to the plate.

Thanks again for your input, I have a plan - will post pics of progress.

[Dazco]

That's the stuff I was thinking about Clift . Never used it for anything like Titus is intending though. And as said keep away from the edge where possible

[Titus A Duxass]

Success!
I ran a 16mm straight through without the hammer, worked a treat.


On the upper one I used some 10mm x 100 long steel wall plugs.


Thanks for the tips guys.