I have a shed constructed about 10 years ago of breez blocks which stands on a concrete slab.
Water is seeping in at ground level at the back ( just in one place about 3 feet in width - the rest of the back is watertight) - the breeze blocks are cemented to the concrete slab and there don't appear to be any cracks in the cement where the water is getting through.
Is there anything I can do to make a better seal in the affected area,