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
  • Window Well Installation in Strattfordville, ON
    Window Well Installation in Strattfordville, ON
    Problem:  Window wells are necessary to keep the structure around...

    Window Well Installation in Strattfordville, ON

    Before
    After

    Problem:  Window wells are necessary to keep the structure around a window draining properly, keep water and debris away from the window and to improve egress.

    Solution: We installed window wells on all the basement windows of this home.

    Inspector: Rick

    Foreman: Justin

  • Improved Crawl Space Access, Blenheim ON
    Improved Crawl Space Access, Blenheim ON
    Problem: The homeowner required improved access to their crawl space. Solution: We installed...

    Improved Crawl Space Access, Blenheim ON

    Before
    After

    Problem: The homeowner required improved access to their crawl space.

    Solution: We installed a steel window well, as part of the crawl space access is below grade and added an EverLast crawl space access door which seals tightly for an ideal crawl space environment.

    Inspector: Tom

    Foreman: Justin

  • A Challenging Multi-Level Dirt Crawl Space, Oxford County
    A Challenging Multi-Level Dirt Crawl Space, Oxford County
    Problem: This multi-level dirt floor crawl space was a challenge successfully...

    A Challenging Multi-Level Dirt Crawl Space, Oxford County

    Before
    After

    Problem: This multi-level dirt floor crawl space was a challenge successfully met by our crew! The open vents were resulting in cold floors during the winter. In the summer the crawl space was damp and musty; the foul odour affected the entire home.

    Solution:  We sealed off the open vents and installed a CleanSpace liner vapour barrier system; which totally encapsulates the crawl space. Our crew also applied moisture-resistant spray foam insulation to help make the home more energy efficient.

    Inspector:  Adam

    Foreman: Tim

  • Sealing Crawl Space Vents, Southwestern ON
    Sealing Crawl Space Vents, Southwestern ON
    Problem:  Open crawl space vents allow for the outside air...

    Sealing Crawl Space Vents, Southwestern ON

    Before
    After

    Problem:  Open crawl space vents allow for the outside air to easily enter a crawl space. Fluctuations in weather combined with the naturally damp and humid environment in a crawl space means a home is likely to have cold floors, higher humidity and a damp, musty smell.

    Open crawl space vents are also an invitation to pests to live under your home!

    Solution: We replaced all the open vents and installed airtight vent covers. Although the covers are only part of creating a healthy and dry crawl space environment – it’s an important step!

    Inspector:  Adam

    Foreman: Tim

  • Fix for a Wet Crawl Space in Southwold, ON
    Fix for a Wet Crawl Space in Southwold, ON
    Problem:  This wet crawl space was causing problems for these...

    Fix for a Wet Crawl Space in Southwold, ON

    Before
    After

    Problem:  This wet crawl space was causing problems for these homeowners in southwestern Ontario. The humid and moist environment caused their traditional fiberglass insulation to fall and become ineffective. Their entire home smelled musty as the odours from the crawl space affected their entire home.

    Solution: We sealed off the outside environment which was causing the humid crawl space environment, encapsulating it with our heavy duty CleanSpace® Liner.

    For improved comfort and better energy efficiency, we also used Spray Foam Insulation.

    What a difference!

    Inspector: Tom

    Foreman: Justin

  • An Important Window Well Improvement in London, ON
    An Important Window Well Improvement in London, ON
    Problem:  The paving stones outside this basement were not properly...

    An Important Window Well Improvement in London, ON

    Before
    After

    Problem:  The paving stones outside this basement were not properly graded and over time water was entering the basement through the window structure.

    Solution: Our team installed a window well with improved drainage and means of egress. You can learn more about our basement window waterproofing by clicking here.

    Inspector: Adam

    Foreman: Paul

  • Clean and Dry Crawl Space, London ON
    Clean and Dry Crawl Space, London ON
    Problem: A dirt floor crawl space can cause many problems in...

    Clean and Dry Crawl Space, London ON

    Before
    After

    Problem: A dirt floor crawl space can cause many problems in a home. High humidity is an unhealthy environment and a breeding ground for mould and allergens, as well as damaging to organic structures such as wood beams, joists and flooring.   

    Solution:  We completely sealed this crawl space with our heavy duty crawl space liner (so durable you can easily walk on it and store items on it) – now the crawl space is dry and clean.  

    Inspector:  Ray

    Foreman: Justin

  • Crawl Space Encapsulation London, ON
    Crawl Space Encapsulation London, ON
    Problem: This dirt floor crawl space is allowing moisture into the...

    Crawl Space Encapsulation London, ON

    Before
    After

    Problem: This dirt floor crawl space is allowing moisture into the home constantly with the earth being exposed. The humidity is high and there are odours in the main level of the home. 

    Solution: By installing an encapsulation system (moisture barrier) we can isolate the home from the earth. We also want to seal off all outside air. This space was also dehumidified to condition the air. 

    Inspector: Ray

    Foreman: Justin

  • Crawl Space - From Damp and Dingy to Clean and Dry in Middlesex County, ON
    Crawl Space - From Damp and Dingy to Clean and Dry in Middlesex County, ON
    Problem:  These homeowners were experiencing the negative affects of...

    Crawl Space - From Damp and Dingy to Clean and Dry in Middlesex County, ON

    Before
    After

    Problem:  These homeowners were experiencing the negative affects of a damp, musty crawl space throughout their entire home.

    Solution: We sealed the vents, updated their existing sump pump and encapsulated the entire crawl space. Our CleanSpace Liner stops moisture from passing through the dirt floor and porous concrete walls.

    Now the homeowners are enjoying a healthier home!

    Inspector:  Adam M

    Foreman: Justin

  • Improving a Crawl Space Access in Kent County, ON
    Improving a Crawl Space Access in Kent County, ON
    Problem: These home owners contacted Advanced Basement Systems to improve their...

    Improving a Crawl Space Access in Kent County, ON

    Before
    After

    Problem: These home owners contacted Advanced Basement Systems to improve their crawl space environment for the benefit and health of the entire home. The access area was unlevel, often wet and not properly enclosed.

    Solution: With crawl space accesses, there are two important points to remember:

    1. The access needs to be accessible.
    2. The access needs to be sealed so the outside fluctuations in temperature and humidity do not affect the improved crawl space environment.

    Our team did a great job improving this access area for ease of entry and to seal off the outside environment from the crawl space.

    Inspector:  Tom

    Foreman: Justin

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 barrierthat'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

  • Aylmer
  • Beachville
  • Bright
  • Burford
  • Burgessville
  • Cathcart
  • Clear Creek
  • Courtland
  • Delhi
  • Eden
  • Embro
  • Erieau
  • Fingal
  • Harley
  • Harrietsville
  • Hickson
  • Innerkip
  • La Salette
  • Langton
  • Morpeth
  • Mossley
  • Mount Elgin
  • Mount Pleasant
  • Norwich
  • Oakland
  • Otterville
  • Plattsville
  • Port Burwell
  • Port Rowan
  • Port Stanley
  • Princeton
  • Salford
  • Scotland
  • Springford
  • St George Brant
  • St Thomas
  • St Williams
  • Straffordville
  • Teeterville
  • Tillsonburg
  • Turkey Point
  • Union
  • Vanessa
  • Vienna
  • Vittoria
  • Wallacetown
  • Walsingham
  • Waterford
  • Wilsonville
  • Windham Centre
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