Is it also discolored as it looks in pics?They look more like blisters caused by some cleaner that had been used on it.
no kiddingHey if he has the patience to do the grout redos, then this will be easy peazy
Unless that is some really thin flooring those small bubbles wouldn't be from an adhesion issue. They look more like blisters caused by some cleaner that had been used on it. If it is a laminated type flooring, the top layer is starting to come loose from the bottom.