GEO-PAR Posted Sunday at 11:38 Share Posted Sunday at 11:38 (edited) I need to order my stone cills and lintels asap but getting cold feet on how I planned to do it. Interested to know what others think - Whether I'm being a little mad or if it will be okay? My intention was to have a natural limestone lintel self supporting. I only wanted it to bear onto the stone walls either side by 50mm (for visual reasons) but now questioning if that's enough. I'll then stick a Catnik CN71A (or similar) above it with a 10mm gap for deflection (so the steel doesn't crack the stone if it deflects). This steel will have your typical 150 bearing each side. I want to keep this above the limestone lintel so when you look up at the window, you don't see any steelwork. Edited Sunday at 11:39 by GEO-PAR Link to comment Share on other sites More sharing options...
nod Posted Sunday at 14:36 Share Posted Sunday at 14:36 Why don’t you just sit the stone lintel in a catnic 1 Link to comment Share on other sites More sharing options...
scottishjohn Posted Sunday at 14:50 Share Posted Sunday at 14:50 If you do not use a catnic with inset limestone then a lintel will need to be at least 150mm into wall each side and thick you will need to be very specific on size with stone supplier if you want to set a one piece one in wioth planty of clearance to fit it in as the steek defllects does not need to be thick as its just for show Is this a new build or extension on exsisting stone building Link to comment Share on other sites More sharing options...
scottishjohn Posted Sunday at 14:54 Share Posted Sunday at 14:54 3 hours ago, GEO-PAR said: 10mm gap for deflection 19mm would be normal gap for bedding it --so maybe a bit more clearance you need to knpw the deflection to work out how big gap for bedding you will need,so it looks right Link to comment Share on other sites More sharing options...
GEO-PAR Posted Sunday at 18:23 Author Share Posted Sunday at 18:23 3 hours ago, nod said: Why don’t you just sit the stone lintel in a catnic Because then you'll see the underside of the steel when you look up below the window Link to comment Share on other sites More sharing options...
GEO-PAR Posted Sunday at 18:28 Author Share Posted Sunday at 18:28 3 hours ago, scottishjohn said: If you do not use a catnic with inset limestone then a lintel will need to be at least 150mm into wall each side and thick you will need to be very specific on size with stone supplier if you want to set a one piece one in wioth planty of clearance to fit it in as the steek defllects does not need to be thick as its just for show Is this a new build or extension on exsisting stone building I did wonder this. I've seen it don't before where the edge of stone head aligns with the opening reveal (I.e so no bearing at all). No idea how you'd do this. Link to comment Share on other sites More sharing options...
GEO-PAR Posted Sunday at 18:28 Author Share Posted Sunday at 18:28 3 hours ago, scottishjohn said: 19mm would be normal gap for bedding it --so maybe a bit more clearance you need to knpw the deflection to work out how big gap for bedding you will need,so it looks right Okay cheers Link to comment Share on other sites More sharing options...
nod Posted Sunday at 19:20 Share Posted Sunday at 19:20 55 minutes ago, GEO-PAR said: Because then you'll see the underside of the steel when you look up below the Sounds an expensive way to go about it Link to comment Share on other sites More sharing options...
nod Posted Sunday at 19:24 Share Posted Sunday at 19:24 Just now, nod said: 57 minutes ago, GEO-PAR said: Because then you'll see the underside of the steel when you look up below the Sounds an expensive way to go about it I would push your frames forward to hide the lintels It would cut your exterior reveals down to 50 mil Link to comment Share on other sites More sharing options...
GEO-PAR Posted Sunday at 20:10 Author Share Posted Sunday at 20:10 44 minutes ago, nod said: Yeah I appreciate it will make it a whole lot cheaper but it's not a house I'm intending to flip, so want to get it right. But equally think what I've drawn may cause issues. I'm wondering how they managed to achieve this - Super deep reveals with no exposed lintels. My guess is that they cast the stones into some kind of concrete lintel. Link to comment Share on other sites More sharing options...
Mr Punter Posted Sunday at 20:19 Share Posted Sunday at 20:19 With just 50mm end bearing I think the stone lintel will look wrong. Go with 150mm minimum. Link to comment Share on other sites More sharing options...
GEO-PAR Posted Sunday at 20:26 Author Share Posted Sunday at 20:26 6 minutes ago, Mr Punter said: With just 50mm end bearing I think the stone lintel will look wrong. Go with 150mm minimum. Yeah I think I'm going to boost it up to at least 100 if not 150 like you suggest. I found this picture where the bearing looks about 50mm, but it's granite so being a harder stone, I guess this makes it possible Link to comment Share on other sites More sharing options...
scottishjohn Posted Sunday at 20:36 Share Posted Sunday at 20:36 8 minutes ago, GEO-PAR said: Yeah I think I'm going to boost it up to at least 100 if not 150 like you suggest. I found this picture where the bearing looks about 50mm, but it's granite so being a harder stone, I guess this makes it possible still wrong , thelintel will be ok buy could crush those small bits under it Link to comment Share on other sites More sharing options...
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