I was attempting to waterproof my back patio by chiseling out some cracks on my patio and then was going to patch and seal it. However, we have angled cellar doors out of the basement. The cellar door rests on angled brick which was covered with concrete some time ago (who knows when). You know, it's like a right triangle:
|\\ | \\ | \\ back of building ->| \\ <- cellar door | \\ | \\ ---------------- <- concrete patio
It looks something like that, but the angle of the door is much shallower (about 45 degrees).
Anyway as I was chiseling cracks on the side of the cellar door structure, the concrete basically all fell off in a few big chunks, clearly water had been seeping in and separated it from the old brick underneath.
Now my question is what should I do? Doing some reading, I'm thinking of scraping all the remaining concrete off, down to the original bricks, then making a cast out of plywood or somesuch and pouring fiber-cement to create a new, stronger, covering over the brick.
The brick is very old and I'm sure not weather proof (that's why it was covered with concrete, I'm sure). It does seem to be supporting the cellar door fine (not loose), which is bolted into the brick.
Also, while I'm here. My building is brick, attached on one side. The front is still exposed brick - in good condition. The side and back have been covered with concrete. Is there a name for this coating? Is it just concrete or some specific exterior treatment?
Other than cracks is there anything else I should be looking for in terms of damage? There are some cracks below the 1st floor window sills, but otherwise it visually looks to be in good shape.