French drain system for crawl spaces
Stop crawl space flooding for good, no payment until you’re satisfied

Water in your crawl space isn’t just inconvenient. It’s a serious threat to your home’s structure, air quality, and long-term value. If you’ve noticed standing water, damp soil, or a musty odor under your home, a French drain system may be the permanent solution you need. French drains are designed to redirect groundwater away from your crawl space foundation, before it causes damage. Installed below the surface, this trench-based drainage system collects and channels water out of the area using gravity or a sump pump. At Michaelis, we design custom crawl space French drain systems that stop flooding at the source and restore stability to your home. Whether you’re searching “how to fix water in crawl space” or comparing waterproofing solutions, our local team is here to help, and you won’t pay a dime until the job is done right.

Insurance restoration and crawl space water damage support

At Michaelis, we help homeowners recover from crawl space flooding with fast inspections, expert repair planning, and full support during insurance claims if applicable.

Insurance Restoration

1

Inspection & Documentation

Our team responds quickly to inspect your crawl space, document standing water, and record moisture intrusion. We gather detailed notes, images, and readings to support your claim and ensure nothing is missed.
2

Claim Support & Planning

We coordinate with your adjuster to validate scope, provide professional estimates, and create a transparent repair timeline that works for your home and budget.
3

Restoration & Settlement

Once approved, we begin work immediately. From French drain installation to vapor barriers and sump pumps, we complete the job fast and keep you updated every step of the way.

Home Improvement Process

1

Assessment & Inspection

We evaluate your crawl space for signs of flooding, water damage, mold growth, and structural issues. Our tools include laser levels, moisture meters, and thermal imaging to locate the root of the problem.
2

Recommendations & Planning

You’ll receive a full report and repair plan, including French drain layout, drainage strategy, and any needed sealing or dehumidification, all with pricing and timeline transparency.
3

Execution & Repair

Our certified waterproofing team installs the full drainage system, seals vulnerable entry points, and restores your crawl space to a dry, stable, and healthy condition.

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Why homeowners in Indianapolis & surrounding counties choose Michaelis

35+ years of trusted crawl space repairs

Certified waterproofing and drainage experts

Full-system design — not just trench-and-run

No payment until you’re 100% satisfied

Free inspections, no pressure

Family-owned, locally rooted

FAQ

Common questions about crawl space French drain systems

1. What is a French drain system for crawl spaces?

It’s a sub-surface drainage solution that collects and redirects groundwater away from your crawl space. A perforated pipe is placed in a gravel-filled trench to drain excess moisture before it causes damage.

2. How do I know if my crawl space needs a French drain?

If you see standing water, high humidity, musty odors, or signs of mold and rot, it likely means your crawl space has poor drainage. A French drain is often the first line of defense against persistent moisture issues.

3. Can a French drain system fix mold or wood rot?

It stops the moisture feeding the problem. While it won’t remove existing mold or rot, it creates the dry conditions needed to properly remediate and prevent future growth.

4. Is French drain installation disruptive?

Not with Michaelis. Our trained team installs crawl space French drains with minimal disruption, sealing the space afterward for a clean, finished result. Most systems are installed in one to two days.

5. Does a French drain help with uneven floors above the crawl space?

Yes, indirectly. By controlling water flow and preventing soil erosion, it helps maintain foundation stability, which supports floor joists and structural elements above.

6. How much does a French drain system cost for a crawl space?

It depends on crawl space size, severity of water intrusion, and whether it’s combined with sump pumps or vapor barriers. We offer free inspections and transparent quotes — with financing available.

7. Why trust Michaelis for crawl space drainage?

We’ve installed hundreds of French drain systems across Indianapolis & surrounding counties. Our work is backed by satisfaction-first guarantees and decades of waterproofing experience.

Crawl space French drain system in Indianapolis & surrounding counties

A French drain system is one of the most effective ways to manage crawl space water intrusion. It’s not a surface fix, it’s a long-term drainage solution designed to redirect water before it ever causes mold, rot, or structural issues. In homes around Indianapolis and neighboring counties, where clay-heavy soils and poor grading are common, these systems are essential.

At Michaelis, we specialize in crawl space French drain installation tailored to your home’s exact conditions. Whether your crawl space floods after storms, holds lingering dampness, or shows signs of rot in beams and insulation, we address the cause, not just the symptoms.

Here’s how it works: we dig a narrow trench along the perimeter of your crawl space, install a perforated pipe over gravel to collect groundwater, and route it to a sump pump or drain outlet. Once sealed and protected with vapor barriers or encapsulation (when needed), the result is a dry, breathable space with dramatically reduced humidity and risk of damage.

Our team has decades of experience working under homes in Indiana’s wettest seasons. We know how to protect against backflow, avoid pipe clogs, and ensure that every drainage system performs under pressure. Combine this with our “no payment until you’re satisfied” policy, and you’ve got a waterproofing partner you can trust.

Call now or book a free inspection to find out if a French drain is the right solution for your crawl space.

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Understanding French drain systems

A French drain is a specialized waterproofing solution designed to direct groundwater away from your crawl space before it becomes a problem. It’s not just a trench with gravel, it’s a fully engineered system that uses perforated pipes, filter fabric, and proper slope to collect and redirect water outside your foundation.

Many homes in Indianapolis and surrounding counties are built on soil that doesn’t drain well. Over time, that water pressure builds up around your foundation or under your crawl space. A French drain system relieves that pressure by giving water a clear path out, keeping your crawl space dry, your foundation stable, and your air quality healthy.

Our French drain installations are custom-designed for your home’s layout and drainage needs. Whether we install them along interior crawl space walls or integrate them with your yard’s grading, we always use tested methods and long-lasting materials to ensure durability and performance.

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Health risks of excess moisture in crawl spaces

When moisture collects in a crawl space, the problem goes far beyond musty smells or cosmetic damage. For homeowners in Indianapolis and surrounding counties, poor drainage and high humidity under the home can lead to serious health risks if left untreated.

1

Mold and allergens in the air

Crawl spaces with excess moisture are a breeding ground for mold, mildew, and dust mites. As these contaminants grow, they release spores into the air, which can seep into your home through ductwork, floorboards, or small cracks. This “stack effect” pulls contaminated air upward, degrading your indoor air quality and increasing the risk of allergies, asthma, and respiratory irritation.
2

Worsening existing health conditions

If you or your family already suffer from allergies, asthma, or other respiratory issues, the presence of mold or elevated humidity in your crawl space can trigger flare-ups or chronic symptoms. Children and seniors are especially vulnerable.
3

Structural safety concerns

Moisture doesn’t just impact health, it compromises your home’s safety. Wood rot and warped joists can lead to sagging floors, cracked walls, and even foundation shifts over time. Preventing water accumulation with a French drain system protects both your living environment and your home’s structure.

Taking action to control crawl space moisture with effective drainage, like a professionally installed French drain, isn’t just about comfort. It’s about health, safety, and peace of mind.

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Why professional French drain installation is necessary

Installing a French drain in your crawl space isn’t a casual DIY project, it’s a technical system that demands experience, tools, and precision. When improperly installed, even the best materials won’t prevent water buildup. Here’s why professional installation makes the difference:

1. Accurate diagnosis of water entry

Every crawl space is different. A proper drainage solution depends on understanding exactly where water is entering, pooling, or moving beneath your home. Our team performs detailed moisture mapping and grading analysis to ensure your French drain is placed where it will be most effective, redirecting water, not just hiding symptoms.

2. Correct slope and trench depth

A French drain only works if it uses gravity to move water away from the home. That means the trench must be set at a precise slope, lined with the right filter fabric, and filled with graded gravel. We ensure the slope is consistent, the trench is deep enough, and the system has an appropriate discharge route, usually to a sump pump or exterior outlet.

3. Integration with crawl space waterproofing

Installing a French drain alone won’t solve everything if moisture is still entering from other areas. Our system connects drainage with other defenses—vapor barriers, encapsulation, and dehumidifiers, to give you complete crawl space protection.

4. Compliance and long-term reliability

Michaelis follows industry best practices and local building codes. We install only time-tested systems, and every drain is backed by our service guarantee. You won’t pay until you’re satisfied, and we ensure your system works for the long haul.

If water is pooling in your crawl space or you’re seeing signs of wood rot, mold, or sagging floors, don’t wait. A professionally designed French drain can protect your entire home from moisture damage, and give you back your peace of mind.

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Moisture doesn’t wait and neither should you

If water is finding its way into your crawl space, it’s not just an inconvenience. It’s the beginning of structural damage, mold growth, and air quality issues that can spread beyond the foundation. 

At Michaelis, we don’t offer quick fixes, we install permanent French drain solutions that work with your home’s layout and your budget.

Thousands of homeowners across Indianapolis and surrounding counties trust our team to solve tough water problems with clarity, care, and real results. We’ll start with a free inspection and give you a full picture of what’s going on beneath your home, then handle the work from start to finish.

Let us help you turn your crawl space from a risk into a strong, dry foundation.

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