Stop Water Damage Before It Destroys Your Foundation

Leak Repair & Foundation Waterproofing in San Antonio, TX

Water is the single most destructive force working against your home’s foundation. In San Antonio where heavy rain events follow prolonged droughts and clay soils shift dramatically with every moisture cycle, water intrusion is one of the leading drivers of structural damage in both slab and pier and beam homes.

VAN General Contracting provides professional foundation waterproofing and leak repair in San Antonio, locating the source of water intrusion, correcting drainage failures, and protecting your foundation’s structural integrity with permanent solutions

What Is Foundation Leak Repair?

Foundation leak repair is the process of identifying where water is entering your home’s foundation and permanently eliminating the pathway. In San Antonio, the cause is rarely just one thing: drainage failures that allow water to pool against the foundation, clay soil expanding under heavy rainfall and driving hydrostatic pressure against foundation walls, cracks in aging concrete, and lot grading that routes surface water toward the structure instead of away from it all contribute.

The right repair addresses the root cause. That can mean sealing cracks directly, installing a drainage system that intercepts water before it reaches the structure, applying a waterproofing membrane, or correcting surface grading. In many San Antonio homes, some combination of all three is what actually solves the problem for the long term.

What's Included in a Full Foundation Waterproofing & Leak Repair

A full foundation waterproofing and leak repair in San Antonio means diagnosing exactly where water is coming from and why so that the solution we install actually holds, way beyond the next heavy rain spell.

Foundation Leak Detection

Before any repair can be effective, the source has to be accurately identified. We use diagnostic assessment to determine whether water is entering through foundation cracks, surface drainage failure, grading problems, or a combination, so our proposed solution addresses the cause, not just the symptom.

Exterior Foundation Waterproofing

Exterior waterproofing involves applying a protective membrane to the outside face of foundation walls, creating a barrier that prevents water from penetrating the concrete itself. This is the most comprehensive long-term protection for foundations facing persistent water pressure from saturated soil.

Interior Foundation Waterproofing

Where exterior access isn’t practical, interior waterproofing systems manage water that enters the structure, routing it to a drainage channel and sump system before it can damage flooring, framing, or foundation components.

French Drain Installation

French drains are one of the most effective drainage solutions for San Antonio properties dealing with pooling water, saturated perimeter soil, or lot grading that directs stormwater toward the foundation. We design and install French drain systems that intercept water before it reaches the structure and redirect it safely away from the property.

Surface Drainage & Grading Correction

Improper lot grading is one of the most overlooked causes of foundation water damage. A yard that slopes toward the house channels every rainfall directly against the foundation. We assess surface drainage patterns and correct grading or install diversion systems to ensure water moves away from the structure.

Sump Pump Systems & Foundation Crack Sealing

For properties with chronic water accumulation in crawl spaces or low-lying areas, sump pump installation provides active, continuous water management. Existing cracks in foundation walls and slabs are sealed using materials and methods appropriate for the crack type and location, eliminating direct water pathways into the structure.

What We Deliver

OUR Process

1

Free Site & Foundation Inspection

We assess the exterior, foundation, crawl space or slab, and drainage to identify where water is entering and what is causing the problem.

2

Root Cause Diagnosis & Custom Waterproofing Plan

We identify the source of the issue and create a tailored waterproofing plan, whether it requires crack repair, drainage, membrane installation, or grading corrections.

3

Professional Installation

4

Final Verification & Warranty

Warning Signs

Leak Repair & Foundation Waterproofing in San Antonio, TX

FREQUENTLY ASKED QUESTIONS

Foundation waterproofing refers to membranes, coatings, and drainage systems that prevent water from penetrating or accumulating against your foundation. If you've experienced water intrusion, damp foundation walls, or drainage problems around your home, a professional inspection will determine whether waterproofing is the right solution for your property.

The most common causes are drainage failures that allow water to pool against the foundation, clay soil expansion creating hydrostatic pressure against foundation walls, cracks in aging foundation concrete, and lot grading that directs surface water toward the structure rather than away from it.

A French drain is a gravel-filled trench containing a perforated pipe that intercepts groundwater or surface runoff and redirects it away from the foundation. It's one of the most effective and durable drainage solutions for San Antonio properties where water consistently accumulates near the structure.

Yes, by eliminating the moisture source that mold requires. Waterproofing alone doesn't remediate existing mold, but it prevents recurrence after mold treatment is completed.

Quality exterior waterproofing membranes and properly installed drainage systems are designed to last decades. We use commercial-grade materials appropriate for South Texas conditions and provide warranty coverage on our installations.

Yes. VAN General Contracting addresses both the water intrusion itself and any structural damage it has caused in a single coordinated scope of work. You don't need two contractors.

It depends on your policy and the cause of the damage. Sudden events such as a burst pipe causing foundation damage may be covered; gradual moisture intrusion and drainage failure typically are not. We can help document the damage for your claim submission.

Let's Protect Your Property

Schedule a free inspection and find out exactly where water is entering your home, before it reaches your foundation’s structural components.