Concrete Waterproofing

Concrete Waterproofing by Legacy General Contractor

FOUNDATION WATERPROOFING — KEEP YOUR BASEMENT DRY FOR GOOD

Water intrusion can cause serious damage to foundations and basements. We offer interior and exterior waterproofing solutions including sealers, membranes, drainage systems, and crack injection to keep your concrete dry.

Starting at $5 per square foot

5 Highlights on Concrete Waterproofing

Exterior membrane application

Waterproofing is applied to the exterior foundation surface where water pressure exists.

Drainage system installation

French drains and drainage board direct water away from foundation.

Interior solutions available

When exterior access isn't possible, interior drainage systems can manage water.

Sump pump systems

Complete drainage solutions include properly sized sump pumps.

Warranty protection

Our waterproofing systems come with workmanship warranties.

Legacy General Contractor has waterproofed foundations throughout the NW Metro Minneapolis area. We understand where water comes from and how to keep it out.

We offer both exterior and interior waterproofing solutions depending on your situation and access.

Signs You Need Concrete Waterproofing

1. Water in your basement

Any water infiltration indicates a waterproofing failure that will only get worse.

2. Dampness or moisture on walls

Moisture without visible water entry suggests vapor transmission through the foundation.

3. Efflorescence (white deposits)

Mineral deposits indicate water is moving through the concrete.

4. Musty smell

Persistent musty odors indicate moisture problems even without visible water.

Our Concrete Waterproofing Process

Step 1 — Assessment

We evaluate where water is entering and the best solution.

Step 2 — Excavation (exterior method)

Foundation is excavated to the footing.

Step 3 — Surface Preparation

Foundation wall is cleaned and repaired.

Step 4 — Membrane Application

Waterproofing membrane is applied to foundation.

Step 5 — Drainage Installation

Drain tile and drainage board are installed.

Step 6 — Backfill

Clean backfill protects the waterproofing system.

Brands We Use

Legacy General Contractor works with industry-leading brands to deliver concrete waterproofing that meets professional standards for strength, durability, and finish quality.

Mar-flex — waterproofing membranes

W.R. Meadows — waterproofing systems

NDS — drainage products

Zoeller — sump pumps

We use these brands because they perform consistently under field conditions. Proper material selection is part of delivering quality work.

FAQs About Concrete Waterproofing

Is exterior or interior waterproofing better?

Exterior waterproofing addresses water at the source and is generally more effective. Interior systems manage water that has already entered and are used when exterior access isn't practical.

How long does waterproofing last?

Quality exterior waterproofing systems can last the life of the foundation when properly installed.