98% of basements get water damage. Average claim: $13,954. Most is preventable. The 7 mistakes turning small issues into financial disasters.

7 Mistakes:

1. Ignoring signs (musty smell, efflorescence): $250 fix becomes $2,000-10,000
2. DIY patching: Redirects pressure, doesn't solve it
3. No maintenance: $200/year vs $10,500-76,000 failure
4. Bad drainage: Need 6" slope, downspouts 6-10 feet away
5. Interior-only fixes: Bailing vs plugging the leak
6. Draining too fast: Remove 1/3 depth/day max or walls collapse
7. No assessment: Hidden moisture needs pro detection

The Math:Proactive (20 years): $19,400Reactive (20 years): $44,000+

Protect with comprehensive basement waterproofing systems, interior drainage solutions, and exterior foundation protection.

Guide: Common Waterproofing Mistakes

DGI: 647-483-2455