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Top-Rated Basement waterproofing pros in Allen - Updated Nov 2026

Avatar for Enhanced Basements Foundation Repair LLC
Enhanced Basements Foundation Repair LLC
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Allen, SD and surrounding areas

In business since 2024

Free estimates

Emergency services offered

Enhanced Basements foundation repair offers reliable and affordable foundation repair solutions. Our dedicated team is committed to providing high-quality services to address various foundation issues. We take pride in our work and strive to ensure the safety and stability of your property.

Underground Specialists, LLC
New to Angi
Basement Drainage Channels - Install

Serving Allen, SD and surrounding areas

In business since 2000

Free estimates

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Alex prides himself on the cleanliness, speed and precision of the work that he provides. For several years now he has enjoyed working with one happy customer after the next and he looks forward to helping you next! Give Alex a call today.

Response time12 hrs
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Basement Waterproofing FAQs, answered by experts

Venting the crawl space can be a good alternative to encapsulation if you live in a dry climate and the moisture problem isn’t severe. You could also try a dehumidifier or install a vapor barrier on the floor, leaving the walls exposed. A new drainage system may eliminate the moisture problem if it is not caused by humidity.

A sewage smell in your crawl space is usually from a damaged or clogged pipe leaking sewer gasses or actual sewage underneath your home, but there are some other common causes. Moisture, from poor or damaged encapsulation or a malfunctioning sump pump, can harbor mold and bacteria, causing a musty smell. Pests can also get stuck in your crawl space and die, which causes a sewage-like odor.

Yes, the air from a damp basement can travel up into your living area through a process called the stack effect, so moisture, mold spores, and other debris in your basement air can all decrease your indoor air quality on your main floors. Additionally, damp basements can promote the rotting of building materials, which can damage flooring, insulation, and framing on your first floor in addition to materials in the basement.

To ensure your basement walls are waterproof, it's crucial to address any existing moisture issues before finishing. Inspect for signs of water seepage, such as dampness or discoloration, and repair any leaks or cracks. Install a vapor barrier to prevent moisture from penetrating the walls, and consider waterproofing paints or coatings.

Proper drainage systems, such as interior or exterior waterproofing, can also be beneficial.

The purpose of crawl space encapsulation is to prevent mold by blocking moisture and reducing humidity. If the vapor barrier is properly installed, it significantly reduces the chance of mold developing within the crawl space. However, mold can sometimes grow behind the encapsulation material, but it will be sealed away from the main area. Additionally, moisture can still condense inside the encapsulated space, so if you notice excess humidity, installing a dehumidifier is recommended to prevent mold and mildew growth.

The Allen, SD homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.