Waterproofing Solutions
| Method | Cost | Effectiveness |
|---|---|---|
| Interior sealant | $500-$1,500 | Temporary |
| Interior drainage | $3,000-$8,000 | Good |
| Sump pump | $500-$1,500 | Essential |
| Exterior waterproofing | $8,000-$15,000 | Best |
| French drain | $2,000-$6,000 | Good |
Recommended Approach
- Identify source - Groundwater vs surface water
- Grade away from house - Extend downspouts
- Install sump pump - If needed
- Interior drainage - For active water
- Exterior - For severe problems