Why Do Foundation Cracks Occur and How Can Waterproofing Membranes Fix Them from the Outside?Edmonton Foundation Crack Repair with Armour Foundation Repair.
Foundation cracks are more than just eyesores; they can signal significant problems that threaten the safety of your home. By understanding their causes and knowing how to tackle them, homeowners can make informed decisions to protect their property.
Understanding the Causes of Foundation Cracks
Foundation cracks arise due to various environmental and structural conditions. Here are the primary causes:
1. Soil Movement
Soil movement is the leading cause of foundation cracks. When soil absorbs excess water, it expands. In dry spells, the soil shrinks, leading to shifts beneath the foundation. In many regions, this cycle can occur multiple times a year, increasing the risk of cracks significantly. For example, a study found that homes in areas with clay soil are 30% more likely to experience foundation issues.
2. Poor Drainage
Inadequate drainage can worsen foundation problems. If rainwater pools around your foundation, it can seep into the soil and lead to further expansion and contraction. According to the American Water Resources Association, improper drainage contributes to nearly 50% of all residential foundation issues. Installing proper drainage systems can reduce the risk of these problems substantially.
3. Temperature Fluctuations
Extreme temperature changes can also harm the foundation. Materials like concrete expand and contract with temperature shifts. Continuous cycles can weaken the structure over time. Statistics show that regions with temperature swings of 30 degrees Fahrenheit or more between seasons face increased foundation risk.
4. Construction Errors
Mistakes made during construction can have lasting effects on your home’s stability. Foundations built with inadequate support or incorrect materials are likely to crack prematurely. A contractor using lower-grade concrete can increase the risk of such issues. Homeowners should ensure they work with reputable builders who follow best practices.
Signs of Foundation Problems
Spotting issues early can save you money in repairs. Watch for these warning signs:
- Cracks in walls and floors larger than 1/8 inch
- Doors and windows that stick or don’t close properly
- Gaps around windows or doorframes
- Any noticeable sloping of floors
If you identify these symptoms, it is vital to take action quickly.
The Role of Waterproofing Membranes
One effective remedy for reducing foundation cracking is applying waterproofing membranes. These barriers shield your foundation from moisture, preventing soil expansion.
What is a Waterproofing Membrane?
A waterproofing membrane is a protective layer applied to the exterior of your foundation walls. It helps stop moisture from penetrating, forming a crucial defense against potential water damage. For instance, homes with waterproofing membranes in place can see a 70% reduction in water-related foundation issues.
Types of Waterproofing Membranes
When looking at waterproofing options, here are three popular types:
- Sheet Membranes: These are made from materials like polymer-modified asphalt. They provide a continuous barrier and are straightforward to install. Many homeowners prefer them for their effectiveness and durability found in various climates.
- Liquid Membranes: Applied as a liquid that cures into a seamless layer, liquid membranes adapt well to complex foundation shapes. They also offer excellent adhesion and can be a good choice for irregularly shaped foundations.
- Bentonite Clay Membranes: Composed of natural clay, these membranes expand upon contact with water, effectively blocking moisture. They are particularly beneficial in areas with heavy rainfall.
How to Properly Apply a Waterproofing Membrane for Foundation Repair
For effective waterproofing, follow these essential steps:
Step 1: Excavation
Start with excavating around your foundation walls to expose them fully. Depending on the size and depth, hiring professionals may be necessary, as improper excavation could harm the foundation.
