I have a 1930's block house and the headers look to be 'cast in place' I'm replacing one outer wall and it will have two headers. I was told to use angle iron and place blocks on top of that. Problem is that angle iron is not flat and will cause the blocks to not be flat unless I fill in with mortar. Is this the right way to make a header on a block wall?
The walls are pure cinder block, no wood, filled center on corners or wherever headers are used, otherwise no filler.
You can use angle iron by welding it back to back and placing the blocking on either side. Now size of the lintel will depend on the opening used. You can also use two steel channels bolted or welded back to back and have the blocks sit on top of the channels just make sure you have at least 6’’ bearing on either side and that your blocks are either full of cement or have a steel bearing plate for the steel material to sit on and be welded in place. And the last thing you can use is a steel beam with a plate welded on it if you are going to have a brick veneer or just a steel beam with no plate and the blocks will sit on top.