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(DIY) buy at HD, apply leak seal from inside OR& V0 B: N% s E" `
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hire some professional company that armed with high pressure injection equipments to do the leak plug.
% r/ a2 w' T5 ?6 l* hshould work, high pressure injection is the best and have lifetime warranty. ) B8 J2 n+ S( j2 c+ j: I / Y$ i' f/ L- z" e2 nhairline cracks not going all the way through wall is not unusual, 3 J4 @" l. i: h& H
( w$ P& `& R: [* I7 Ibig crack is rare, if possible, I rather back off