Hi, I have a No Fines constructed house and both ground floor window lintels have spalled on the bottom edges. I reckon they could be repaired using epoxy but think it may be better to replace. The lintels are precast concrete ( with 2 fairly hefty twisted rebars) both 80 high x 180 deep and 2.1m and 2.8m long respectively . The first floor joists run parallel to the lintels. I'm assuming, since the main structure is concrete (albeit NO Fines) that I would still be best to use a couple of Strong Boys and props to support the concrete above the lintels. I would place these in the mortar joint between the lintel and the concrete. If this sounds o.k. how long should the props be left in position?
Many thanks
Many thanks