J-Walt Construction
waterproofing
Serving Sioux City, IA
No phone or website on file.
Location: 2520 S Royce St, Sioux City, IA 51106From Google Business Profile
3.0
2 Google reviews
Hours
| Monday | 7 AM–8 PM |
| Tuesday | 7 AM–8 PM |
| Wednesday | 7 AM–8 PM |
| Thursday | 7 AM–8 PM |
| Friday | 7 AM–8 PM |
| Saturday | Closed |
| Sunday | 12 AM–8 PM |
Google categories: General contractor
View on Google Maps →Last checked October 7, 2026.
More from Google Business Profile
Photos on Google: 1
Recent Google reviews (excerpts)
Written by Google users, not by EdgeLocal. EdgeLocal has not verified them and does not show reviewer names.
5 out of 5 stars · Sep 2024
Good Carpenter, Good Guy
From Google Business Profile, last checked October 7, 2026.
About waterproofing in Sioux City
Basement waterproofing contractors stop leaks with drainage systems, sump pumps and sealing. Waterproofing contractors install interior drain tile and sump pumps, exterior membranes, crack injection, window well drainage, vapor barriers and dehumidifiers to keep basements dry.
Typical cost: $3,000–$12,000 for interior drainage systems. See the full cost guide
Typical U.S. ranges from industry sources (2024–25); not EdgeLocal data. Your quote will vary with scope, materials and location.
Questions to ask this contractor
- Identify the water source: Grading and gutters may solve problems for less.
- Compare interior and exterior options: Ask for pros and cons of each.
- Ask about the sump pump: Get pump brand, capacity and backup options.