Gentry Construction
waterproofing
Serving Madrid, IA
From Google Business Profile
5.0
5 Google reviews
Hours
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Open 24 hours |
| Sunday | Closed |
Google categories: General contractor
View on Google Maps →Last checked October 5, 2026.
About this business
Gentry Construction is a local general contractor specializing in roofing, siding, concrete, additions, remodels, and new construction serving Central Iowa.
Services
- roofing
- siding
- concrete
- additions
- remodels
- new construction
- storm damage repairs
Service area: Central Iowa
- Estimates
- Yes
Source: the business's Google Business Profile description, read automatically on October 18, 2026. Not verified by EdgeLocal.
About waterproofing in Madrid
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.