dan_cup Posted September 22 Share Posted September 22 Evening all, I've done a search but not finding my answers so here goes. 1930s semi, opening up the chimney back to the builders opening. The decided it needed to be wider and higher. completed this and fitted a fresh re-enforced lintel which meant we got extra height without removing course of bricks. however the 'gather' was showing so on the installers instruction I've removed a couple rows. my fire installer has suggested to keep pulling bricks out until the tie in bricks are left and the 'unsupported' one are removed. a builder been round this afternoon to weigh up our proposed extension and he commented that how it is at present has some weight up above and id be wise to fire some pins in at 90 deg to the lintel into the rear wall. What route should I take? Link to comment Share on other sites More sharing options...
dan_cup Posted September 22 Author Share Posted September 22 few prev Link to comment Share on other sites More sharing options...
dan_cup Posted September 22 Author Share Posted September 22 Link to comment Share on other sites More sharing options...
joe90 Posted September 22 Share Posted September 22 4 minutes ago, dan_cup said: fire some pins in at 90 deg to the lintel into the rear wall. Not heard that before? What kind of pins? If this is to support the grey blocks either side I would have put angle iron into the back wall and over your new lintel, might be difficult now tho. 1 Link to comment Share on other sites More sharing options...
ETC Posted September 22 Share Posted September 22 (edited) If there is unsupported masonry - pins (cut reinforcement bars) or a new throating piece should be installed. I see it all the time. Don’t forget to install a flexible flue liner, a raised hearth and a CO alarm/detector. Edited September 22 by ETC 1 Link to comment Share on other sites More sharing options...
dan_cup Posted September 22 Author Share Posted September 22 24 minutes ago, joe90 said: Not heard that before? What kind of pins? If this is to support the grey blocks either side I would have put angle iron into the back wall and over your new lintel, might be difficult now tho. He meant fitting similar lintel sized pieces by removing one block above lintel and going in at 90deg at both sides. personally I was thinking angle iron around the permitter. Link to comment Share on other sites More sharing options...
dan_cup Posted September 22 Author Share Posted September 22 7 minutes ago, ETC said: If there is unsupported masonry - pins (cut reinforcement bars) or a new throating piece should be installed. I see it all the time. Don’t forget to install a flexible flue liner, a raised hearth and a CO alarm/detector. So I could put just 10mm re bar in for example? Flue will be done but stove fitter ( I’m not good on a roof!) hearth and surround being made by stone mason. Carbon monoxide monitor ready to go! Link to comment Share on other sites More sharing options...
joe90 Posted September 22 Share Posted September 22 Are the grey blocks supported in/by the back wall? If so just drill through new front bricks into the grey blocks and drive re bar through them both. Link to comment Share on other sites More sharing options...
dan_cup Posted September 23 Author Share Posted September 23 the grey parts underneath are the mortar remains from the brick I've removed. above that will be another course of bricks. If it follows the same pattern I hope there will some supported into the back wall, so I think your suggestion could well work! looking at the picture here I don't think there are any tie in bricks on the front wall until the 7th course of bricks up. you can also see how the gather was before I butchered things Link to comment Share on other sites More sharing options...
joe90 Posted September 23 Share Posted September 23 I would want to clean that mortar off and see what the bricks orientation are and if they are supported at all before deciding how to proceed 1 Link to comment Share on other sites More sharing options...
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