I have a crack in my block wall foundation and water is coming in my basement. A contractor checked it out and said that he would fix the problem by doing the following: Dig and brush the wall on day 1. Apply tar on second day when wall is dry. Once the tar is dry, apply a "Blue Skin" type membrane. He will then fill the hole with material with more of a sandlike composition. Does this sound like a good solution? Should the crack be filled first? If it makes any difference, this is in Ontario Canada.
Thanks for any replies...Yvan