Maine basement waterproofing

Drain the water out right, radon tight

Maine basement waterproofing

Drain the water out right, radon tight

A smarter approach to basement waterproofing

6,000+

6,000+ homes upgraded

Since 2006, we’ve helped thousands of Maine homeowners. We don’t just redirect water – we look at moisture, air movement, and radon together to protect your whole home.

Three simple steps to waterproof your basement

1. Reach out today

Call 207-594-2244 to schedule a free consultation. We’ll talk through the moisture or water issues you’re experiencing, walk through your basement or crawlspace, and identify possible sources of the problem. We’ll also explain recommended solutions, timelines, and what to expect during the project.

2. Waterproof with care

Our experienced team installs interior drainage systems, sump pumps, and encapsulation solutions based on your home’s needs. We carefully seal drainage trenches, manage groundwater safely, and complete the installation so your basement is left clean, dry, and ready for long-term performance.

3. Quality assurance

After installation, we confirm that your drainage system, sump pump, and moisture controls are performing as expected. We review the completed work with you and make sure everything is functioning properly so your basement stays dry and comfortable for years to come.

There are lots of basement waterproofing companies in Maine

See why homeowners choose Evergreen.

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Any questions about basement waterproofing for your Maine home?

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What’s the best way to waterproof a basement?

There isn’t one solution for every home. The right approach depends on how water enters the basement and how moisture moves through the space. Most Maine homes benefit from a combination of drainage, moisture control, and air sealing.

French drains and interior drainage systems

French drains move groundwater away from the foundation before it can build pressure against basement walls. Perforated piping and drainage stone installed along the basement perimeter guide water safely to a sump pump.

For many Maine homes with clay or silty soils, they provide a reliable way to move water quickly and prevent recurring basement moisture problems.

Sump pump systems

A sump pump is the heart of most basement waterproofing systems. Installed at the lowest point of the drainage system, it collects groundwater and pumps it safely away from the foundation.

Modern sump systems operate quietly and efficiently, even during heavy rain or spring snowmelt. When properly sized and installed, they protect your basement from flooding and help control moisture around the foundation.

Mold solutions

Mold problems often begin when moisture builds up in basements, crawl spaces, or other poorly ventilated areas of the home. Our mold solutions focus on identifying the source of moisture and addressing the conditions that allow mold to grow.

For many Maine homes with damp basements or crawl spaces, managing moisture is the most reliable way to prevent recurring mold problems and maintain healthier indoor air.

Basement dehumidification

Even when bulk water is controlled, basements can still feel damp because of high humidity. A high-capacity dehumidifier helps maintain stable humidity levels and reduce musty odors.

By controlling moisture in the air, dehumidification protects framing, stored belongings, and finished spaces while improving comfort throughout the rest of the home.

Radon-aware waterproofing

In the wrong hands, waterproofing can create pathways that allow radon to enter the home. Evergreen designs drainage systems that move groundwater while staying mindful of soil gases.

By sealing drainage trenches and coordinating waterproofing with radon mitigation when needed, we help ensure the same openings letting water out aren’t also letting radon in.

Crawl space encapsulation

Many Maine homes have crawl spaces that experience the same moisture issues as basements. Encapsulation seals exposed soil and foundation surfaces with durable vapor barriers.

This creates a cleaner, more stable environment while reducing moisture, improving air quality, and helping protect the rest of the home above the crawl space.

Let’s talk about your home.

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Basement waterproofing near you

Southern and Coastal Maine

service area map - southern and coastal maine

We provide basement waterproofing services for homeowners across Southern and Coastal Maine, typically within about a 45-minute drive of our Portland and Rockland offices.

Check out our latest basement waterproofing articles

Read more articles about wet basement solutions in Maine

Common questions about basement waterproofing

Common warning signs include water on the basement floor, damp walls, musty odors, visible mold, or white mineral deposits on foundation walls. Even occasional moisture can indicate groundwater pressure around the foundation. We’re here to address any concerns you notice in your free consultation, determine root causes, and recommend the best solutions.

Groundwater, heavy rain, snowmelt, and Maine’s clay or silty soils can allow water to build up around a foundation. Over time that pressure pushes moisture through cracks, joints, or porous concrete walls.

The right solution depends on how water is entering the home. Many basements benefit from a combination of interior drainage systems, sump pumps, vapor barriers, and humidity control to keep the space dry.

Costs vary depending on the size of the basement and the type of system installed. During your consultation, we evaluate how water is entering the space, recommend solutions tailored to your home, and go through rebates and financing options.

Sometimes, yes. Even occasional moisture can indicate groundwater pressure around the foundation. A sump pump paired with a drainage system can prevent small moisture problems from becoming flooding or mold issues.

Exterior systems stop water before it reaches the foundation, while interior systems collect groundwater and direct it safely away from the basement. Interior drainage systems are often the most practical solution for existing homes.

It can if drainage systems are not designed and sealed properly.

Many waterproofing systems involve cutting a trench around the basement perimeter and installing drainage pipe below the slab. If that trench is left unsealed or loosely covered, it can create a pathway that allows soil gases like radon to enter the home.

At Evergreen, we install sealed drainage systems designed to move groundwater while limiting air movement from the soil into the basement. We also consider how the waterproofing system interacts with existing radon mitigation systems or future radon testing.

By sealing drainage trenches and coordinating waterproofing with radon mitigation when needed, we help ensure the same openings that let water out aren’t also letting radon in.

Many basement waterproofing projects can be completed in a few days, depending on the size of the space and the type of system installed. Give us a call (207) 594-2244 – we cover timelines and expectations in every free consultation.

Waterproofing addresses the moisture that allows mold to grow. In some homes, additional solutions like dehumidification or mold remediation may also be recommended.

Yes. Controlling water and humidity can make basements much more comfortable and stable, creating better conditions for storage or finished living areas.

Encapsulation seals exposed soil and foundation surfaces with a durable vapor barrier. Many Maine homes benefit from encapsulation because crawl spaces often contribute moisture and humidity to the rest of the house.

Often it does. Musty odors are usually caused by excess moisture or mold growth. Controlling water and humidity can significantly improve basement air quality.

A properly designed drainage system can protect a home for decades. The key is installing a system that addresses the underlying moisture conditions, not just the symptoms.

Yes. Moisture in the basement can travel upward through the house, affecting humidity, indoor air quality, and comfort in the living spaces above.

The best approach starts with evaluating how water and moisture are entering the basement. Schedule a free consultation today – Evergreen looks at drainage, humidity, soil conditions, and airflow to recommend the right solution.

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