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5 Causes of Water Leaks in Your Basement and How to Fix Them

Mar 29, 2024

A leaky basement is a problem that can lead to mould and structural damage. Whether you have noticed damp walls or a musty odour in the basement, addressing the issue quickly is key to preventing bigger and costlier repairs. However, most of the basement leak causes are avoidable and can be fixed with the right approach. Various factors may contribute to a water leak in the basement area.  

Knowing the reasons for leaks will help you make informed decisions for basement leak repair, whether it is minor seepage or recurring flooding caused by foundation cracks or poor drainage. Let us explore the factors that can lead to basement leaks and understand how each may require a unique solution

1. Cracks in the Foundation

Over time, concrete foundations can develop cracks due to soil movement, temperature changes, or water pressure. Even the tiniest crack can allow water into your basement, leading to persistent dampness or puddles.

Fix:

  • For minor cracks, apply a waterproof sealant or epoxy injection to seal the gap.
  • Professional basement waterproofing may be necessary to prevent further deterioration for larger or recurring cracks.

2. Poor Drainage Around the House

If the ground around your home slopes towards the foundation, rainwater and melting snow can accumulate and seep into the basement. Clogged or poorly installed gutters and downspouts can be one of the basement leak causes that contribute to water pooling near your home’s foundation.

Fix:

  • Ensure your yard slopes away from the foundation to direct water away from the house
  • Keep gutters and downspouts clear, and extend downspouts at least 6 feet away from your home

3. Faulty or Missing Sump Pump

A sump pump is designed to prevent water accumulation in your basement by redirecting it away from your home. If your sump pump is faulty, overwhelmed, or missing altogether, you may find yourself dealing with a flooded basement.

Fix:

  • Regularly check your sump pump for blockages or electrical issues
  • Install a battery backup system to ensure it works even during power outages
  • If you don’t have a sump pump, consider installing one as part of your basement waterproofing

4. Hydrostatic Pressure Build-up

When the soil around your home becomes saturated with water, it exerts pressure on your foundation walls, forcing moisture through any weak spots. This is a common basement leak cause, especially in areas with high rainfall or clay-rich soil that retains water.

Fix:

  • Install a French drain system to divert water away from the foundation
  • Apply waterproof coatings or membranes to basement walls to create a moisture barrier
  • If the problem persists, professional basement leak repair services can help reinforce the foundation

5. Leaky Plumbing Pipes

Not all water leaks in basement spaces come from outside sources. Sometimes, internal plumbing issues such as leaking pipes burst water heaters or backed-up drainage systems can create serious moisture problems.

Fix:

  • Inspect visible pipes for signs of leaks or corrosion
  • Replace old or damaged pipes before they cause major flooding
  • If you suspect a hidden leak, call a professional plumber to detect and repair the issue before it worsens

Ways to Prevent a Water Leak in Basement 

While fixing leaks is essential, basement waterproofing is the best long-term solution to keep your basement dry. Some preventive measures can include:

  • Installing an interior drainage system to channel water away
  • Applying waterproof paint or sealants on walls and floors
  • Ensuring proper ventilation to prevent condensation
  • Conducting regular inspections to catch leaks early

A dry, well-protected basement prevents costly damage. If you are struggling with persistent leaks, consider consulting a basement leak repair expert to assess the basement leak causes and recommend the best waterproofing solutions. Ensure to use the best suitable basement waterproofing solutions like Astral Trubuild TRU PU waterproofing membrane.

What makes Astral Trubuild TRU PU the right solution for basement waterproofing? 

  • Easy Application: A single-component liquid system that simplifies waterproofing
  • High Elasticity: Forms a permanently flexible barrier, adapting to temperature variations
  • Superior Resistance: Offers outstanding protection against oxidation and weakening, ensuring long-term performance
  • Excellent Adhesion: Bonds effectively with multiple surfaces for enhanced durability
  • Crack Bridging: Capable of sealing cracks up to 2 mm, preventing water ingress
  • Great Retention Capacity: Provides lasting waterproofing without frequent maintenance

With Trubuild TRU PU, you get a reliable and efficient basement waterproofing solution that enhances the longevity of structures while ensuring peace of mind. By addressing the root causes of basement leaks now, you can enjoy a safer, healthier, and more comfortable home for years to come.

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