When I cleaned my garage and washed concrete, I noticed some small almost hairline cracks.
A little while later, there was water on the floor in the laundry which is on the joining wall. Even later I noticed that the laminate floor in the kitchen which is next to the door of the garage were expanding a little. The same thing happened last year when I parked my snow covered car in the garage. How do I repair those small cracks so this will not happen again? Can I paint something to waterproof the floor or is there a better way?