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Just fitted lintel for new door opening. Had to cut opening 1/2” below where I wanted it so I could slide lintel in behind an obstruction. Lintel now in but needs to be lifted 1/2” to butt up against blocks. What’s the best way to do this? Mortar and slate and support lintel till dry? Best way...

Need to put a new opening in block wall for door. Blocks are 150mm wide the lintel will only be supporting 4 courses of blocks with nothing on top of those. Space is tight above opening for door so could I use lintel on side so 65mm is the height? It will be a concrete lintel, as below...

Hi Just bought a house with an extension on back, 4m depth with sloping roof and velux windows. Currently has a set of french doors and a window, would like to replace with bi fold doors. Opening would be 3.8m. Current construction has inner skin built from blocks with 150mm concrete lintels...