Another cavity step out question

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13 Aug 2023
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Him
Just realised I have had 3x SK90 cavity lintels waiting to be used and removing the roof ( single storey extension going to flat roof ) the cavity is only 75. Well, anything from 70 to 90 it seems. With help on here (thanks woody) I’ve stepped in to the main house - looks good - but now - can i step out going up? It will be one row of blocks and the wall plate - overhanging previous course by about 15mm-20mm. And can I do this just for the load point of the lintel - ie a single block next to the opening. The other side is a 1.2m pier so I can actually take down the inner leafs and rebuild at 100mm.

Thoughts?

Thanks.
 
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