Crawl Space Repair in London, Windsor, Chatham, Sarnia, ON

Solve your crawl space moisture, mold, and structural problems

Crawl space with standing water and falling fiberglass batts Crawl space sealed with CleanSpace

Moisture in a crawl space causes mold and falling insulation. The CleanSpace system prevents these issues.

A crawl space moisture or water problem can cause health, safety, and comfort issues in your home, such as mold, rotted floor joists, or a pest infestation. The best way to prevent these problems is with crawl space encapsulation, moisture control, and waterproofing.

If you have a problem in your crawl space, contact the expert crawl space contractors at Advanced Basement Systems today to schedule your crawl space inspection and free cost estimate in Chatham and surrounding areas in Ontario.

Our Crawl Space Services in Ontario

  • Crawl Space Encapsulation: A crawl space vapor barrier is essential for preventing excess moisture from entering the space and causing mold growth.
  • Crawl Space Dehumidification: Adding a dehumidifier to the crawl space can help maintain a healthy moisture level and improve the air quality inside the home.
  • Crawl Space Insulation: Insulating your entire crawl space helps eliminate drafts and will make your home more comfortable and energy efficient.
  • Crawl Space Structural Repair: We can eliminate sagging, bouncy floors by installing durable, adjustable crawl space support jacks under the floor joists.
  • Crawl Space Drainage: Crawl space drains and sump pumps remove any water that is in your crawl space to eliminate damage from flooding and moisture build up.

Signs of a Crawl Space Problem:
Before & After
  • Tall Crawl Space Floor Joist Rott
    Tall Crawl Space Floor Joist Rott
    Problem: Dirt floor crawl space, 6.5ft high, allowing water inside....

    Tall Crawl Space Floor Joist Rott

    Before
    After

    Problem: Dirt floor crawl space, 6.5ft high, allowing water inside. Mold, odors and pests were an occurring issue.

    Solution: Encapsulate entire sub-level and ensure adequate drainage was in place. Now is a safe, dry, comfortable area for storage.

    Inspector: Gordon

    Foreman: Shawn

  • Crawl Space Before and After, Kent County ON
    Crawl Space Before and After, Kent County ON
    Problem: The dirt floor crawl space was creating a damp and...

    Crawl Space Before and After, Kent County ON

    Before
    After

    Problem: The dirt floor crawl space was creating a damp and musty environment in this home. This homeowner required some debris to be removed from the crawl space. The homeowner also had the problem of cold floors above the crawl space as there was not enough insulation.

    Solution: We installed a Clean Space liner to help with humidity and moisture in the crawl space and included Spray Foam insulation. Now the homeowner enjoys the benefits of a dry and comfortable crawl space area: less humidity in the home, eliminating musty odours and improved heating and cooling performance.

    Inspector: Tom

    Foreman: Justin

  • Sealing a Crawl Space Access, Southwestern ON
    Sealing a Crawl Space Access, Southwestern ON
    Problem: The homeowner needed to seal up an unused crawl...

    Sealing a Crawl Space Access, Southwestern ON

    Before
    After

    Problem: The homeowner needed to seal up an unused crawl space access door to improve the crawl space environment.

    Solution: We installed and permanently sealed an EverLast crawl space access door. Sealing up all crawl space access areas is important to keep a home’s relative humidity low and a part of having ideal conditions in the crawl space.

    Inspector: Tom

    Foreman: Justin

  • The Solution for a Wet Cellar in Amherstburg, ON
    The Solution for a Wet Cellar in Amherstburg, ON
    Problem:  These owners made great use of this garage cellar...

    The Solution for a Wet Cellar in Amherstburg, ON

    Before
    After

    Problem:  These owners made great use of this garage cellar as storage for their seasonal items, unfortunately, this area was experiencing water penetration for years. Mould was starting to form on the cardboard, damage items sitting on the floor and the musty smell was permeating, well… everything.

    Solution: Advanced Basement Systems to the rescue! We installed CleanSpace® Drainage Matting to move the water to the updated drainage system and finished the walls off with our CleanSpace® Liner.

    Now, these homeowners can store their items knowing they’ll stay safe and dry.

    Inspector: Bryan

    Foreman: Justin

  • Crawl Space Barrier and Jacks, Essex ON
    Crawl Space Barrier and Jacks, Essex ON
    Problem: This home had sagging floors and high humidity due...

    Crawl Space Barrier and Jacks, Essex ON

    Before
    After

    Problem: This home had sagging floors and high humidity due to an exposed dirt floor.

    Solution: Install a vapor barrier (CleanSpace) to isolate the home from the earth. Dig and pour new concrete footings and install steel support posts (jacks) that can be adjusted over time to lift the home back up. Install a high-performance dehumidifier.

    Inspector: Belal/Garrett

    Foreman: Justin

  • New Crawl Space Door
    New Crawl Space Door
    Problem: This tight, uncomfortable and ugly access adds no value or...

    New Crawl Space Door

    Before
    After

    Problem: This tight, uncomfortable and ugly access adds no value or practicality to the home.  

    Solution: Install a well (steel or vinyl) with a removable vinyl door. This is the EverLast Door. Only doors below grade need a well.

    Inspector: Garrett

    Foreman: Justin

  • A Necessary Crawl Space Update in Windsor, ON
    A Necessary Crawl Space Update in Windsor, ON
    Problem: These homeowners contacted Advanced Basement Systems to improve their crawl...

    A Necessary Crawl Space Update in Windsor, ON

    Before
    After

    Problem: These homeowners contacted Advanced Basement Systems to improve their crawl space environment. The space had excess debris, was damp and unlevel. The homeowners were experiencing a musty smell throughout their home due to the crawl space’s humid environment, and their floors were cold during the winter months.

    Solution: Our team:

    -        Cleaned out the debris

    -        Leveled the crawl space

    -        Completely encapsulated the crawl space, sealing it from the outside environment

    -        Installed Spray Foam Insulation on the exterior walls to help with the home’s heating and cooling efficiency.

    All our products work together to create a clean, healthy and dry crawl space. It’s hard to believe it’s the same space – what a transformation!

    Inspector:  Bryan

    Foreman: Justin

  • One Crawl Space, Many Problems in Windsor, ON
    One Crawl Space, Many Problems in Windsor, ON
    Problem: These homeowners were experiencing many problems with their home as...

    One Crawl Space, Many Problems in Windsor, ON

    Before
    After

    Problem: These homeowners were experiencing many problems with their home as a result of a poor crawl space environment.

    -        Sloping floors as a result of shifting supports

    -        The wet crawl space created a musty, damp smell in their house

    -        Mould forming on the wood beams as a result of the high humidity

    -        Cold floors in the winter months and high energy costs

    Solution: This was a big job, involving many important components and we were up for the task!

    Our team:

    -        Encapsulating the space with our Clean Space® Vapour Barrier.

    -        Installed new SmartJack® Crawl Space Support Beam Stabilizers.

    -        Replaced a failing support beam.

    -        We sealed the exterior vents and added Spray Foam Insulation to some exterior walls.

    -        Installed our super quiet, efficient and nearly maintenance-free SaniDry™ Sedona Dehumidifier.

    This transformation is another example of how our products work together for a smart solution to crawl space challenges.

    Inspector: Bryan

    Foreman: Justin

  • Crawl Space Repair in Windsor, ON
    Crawl Space Repair in Windsor, ON
    This home was inspected by Cory Lahey. He saw the...

    Crawl Space Repair in Windsor, ON

    Before
    After

    This home was inspected by Cory Lahey. He saw the home needed help in a variety of areas within the crawl space. Our crew went out and installed products to allow this homeowner the ability to have a safe, dry and comfortable crawl space area. 

  • Problematic Crawl Space
    Problematic Crawl Space
    After a thorough inspection, we created a plan to permanently...

    Problematic Crawl Space

    Before
    After

    After a thorough inspection, we created a plan to permanently solve this challenging crawl space.

    Our team installed:

    -         A new beam

    -         SmartJack support jacks

    -         A CleanSpace liner and vent covers, completely sealing the space from the outside environment

    -         PolarFoam insulation, to help improve the comfort and efficiency of the home

    -         A nearly maintenance free and very efficient dehumidifier which drains directly into the crawl space sump pump

    Our products and services are designed to work together for a long-lasting solution. Now, these happy owners have taken care of the effects of an unhealthy crawl space; they can better enjoy their home. We are so pleased they chose Advanced Basement Systems!

Excess moisture in the crawl space can contribute to:

  • Musty odors and poor indoor air quality
  • Feeling of dampness in the living area
  • Buckled hardwood floors
  • Mold growth
  • Allergic reactions and worsened asthma symptoms
  • Wood rot
  • Increased energy usage and bills
  • Pest infestations

Our Proven System for a Dry Crawl Space

Crawl space encapsulation will improve the home's comfort and energy efficiency.

Our complete crawl space encapsulation system is designed to combat your moisture, mold, comfort, and structural problems.

We cover the crawl space walls and floor with the premium-quality CleanSpace 20-mil vapor barrier that's covered by a 25-year warranty against rips and tears. The crawl space vents are sealed with vent covers that never need painting. A powerful, energy-efficient SaniDry dehumidifier is installed to effectively control moisture and prevent mold.

Our crawl space solutions include:

  • Vapor Barrier
  • Dehumidifier
  • Insulation
  • Vent Covers
  • SmartJack Leveling Supports
  • Sump Pumps & Drainage Systems
  • Mold Treatment

Get a free estimate on your crawl space project

Whatever your crawl space issues - moisture, settlement, uneven floors, water or flood damage, pests, mold, or damaged insulation - Advanced Basement Systems has the perfect solution.

As much as half of the air in your home comes from your crawl space. This means if your crawl space is vented or unsealed, it's likely that the air in your living space has mold, dust, contaminants, and excess moisture that's made its way up from the crawl space. Invest in your health, safety, and comfort with a crawl space system that's proven to provide years of worry-free performance and protection.

Call 1-844-320-1542 today to schedule your on-site crawl space repair consultation and free cost estimate, available in London, Windsor, Chatham, Sarnia and surrounding areas in Ontario.

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

Our Locations:

Advanced Basement Systems
23576 Prince Albert Road
Chatham, ON N7M 5J7
1-226-706-2439


Advanced Basement Systems
199 Exeter Rd Unit E
London, On N6L 1A4
1-226-270-8565
Coverage Area: Southwestern Ontario