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Bench Footing vs. Underpinning in Toronto

If you’re a homeowner in Toronto, you may find yourself faced with the decision between bench footing and underpinning when it comes to foundation reinforcement or basement lowering projects. Understanding the differences between these two methods is essential for making the right choice for your home. In this comprehensive guide, we will delve into the intricacies of bench footing vs. underpinning in Toronto, exploring their unique applications, benefits, and costs. With this information at your fingertips, you’ll be better equipped to make an informed decision and ensure the structural integrity of your home for years to come.

Table of Contents

Understanding Bench Footing

Bench footing is a specialized method used for lowering basement floors. It’s an excellent option for homeowners looking to gain extra living space in their basements without impacting the foundation walls.

How Bench Footing Works

Bench footing is a unique method of reinforcing a foundation that involves constructing a new footing alongside the existing foundation footing. This process is carried out with careful excavation to ensure the angle of repose of the original foundation is not compromised. Typically, the deeper the bench footing goes, the more it extends into the basement area. By utilizing this method, homeowners can effectively lower their basement floors while maintaining the structural integrity of their home’s foundation and avoiding potential issues that could arise from more invasive techniques such as underpinning.

"Expertly constructed bench footing in Toronto, displaying the efficient foundation reinforcement method for challenging basement lowering projects.
"Expertly constructed bench footing in Toronto, displaying the efficient foundation reinforcement method for challenging basement lowering projects.

Understanding Foundation Underpinning

Foundation underpinning is another method used for basement lowering and reinforcement. Unlike bench footing, underpinning focuses on strengthening the existing foundation walls by extending their depth or breadth.

The Underpinning Process

As a premier basement construction company in Toronto, we take pride in our expertise and professionalism throughout every phase of our Basement Lowering Services. Our team is dedicated to ensuring the highest standards are met, from the initial consultation to the final inspection and cleanup.

Consultation and Assessment – Our process begins with a thorough consultation and assessment of your property. Our experienced professionals will inspect your site, evaluate your basement’s condition, and determine the best solution to fit your needs. We conduct soil tests and structural assessments and review architectural plans, ensuring a comprehensive understanding of your property’s requirements.

Design and Engineering – Following the assessment, our skilled engineers and designers craft a customized basement construction plan for your home. This plan covers determining depth, selecting appropriate construction methods, and ensuring compliance with Toronto’s local building codes and regulations. We are committed to designing a basement that meets your needs and maximizes your space.

Permits and Approvals – Before starting any work, our team acquires necessary permits and approvals from Toronto’s local authorities. This vital step ensures your project adheres to all relevant guidelines and regulations, guaranteeing a safe and compliant process.

Construction Process Organization and Structural Support – We meticulously organize the workflow, including efficient soil removal using conveyor belts and strategically placed soil disposal bins. We also implement structural support measures, such as temporary shoring, to maintain your home’s integrity during construction.

Excavation and Underpinning – The process involves excavating small sections beneath the existing foundation and systematically installing concrete or steel supports. This method ensures structural stability while creating the desired basement depth and space.

Other Structural Works – Our team performs additional structural work as needed, including installing or replacing metal load posts, creating wall openings, and installing or replacing load-bearing beams. These measures enhance your home’s structural integrity throughout construction.

Plumbing, Drainage, Waterproofing, and Flood Protection – We address all plumbing and drainage concerns, install waterproofing solutions to protect against moisture and water damage and implement flood protection measures like backwater valve and sump pump installations.

Building Inspections – Throughout construction, we collaborate with the City of Toronto building inspectors assigned to your permit. Our team schedules and passes all required inspections, ensuring compliance with local building codes and regulations.

Concrete Floor – After construction, our team pours a new concrete floor over a 4-5 inch subfloor gravel bedding, providing a solid and stable foundation for your new basement and creating a durable, functional space.

Final Inspection and Cleanup – We uphold the highest quality standards, conducting a final inspection before cleaning the worksite and restoring your home to its original state. As a professional basement construction company, we are committed to delivering an exceptional experience and ensuring your satisfaction with the end result.

Throughout the process, our team of experts works closely with you, ensuring your specific needs are met and your expectations are exceeded.

Types of Underpinning

There are several types of underpinning techniques utilized by construction professionals in Ontario to address various foundation issues. Each method offers unique advantages and is suited to specific situations. Here are three popular types of underpinning:

1. Non-Shrink Type

The non-shrink method of underpinning is a reliable technique used to reinforce and stabilize the foundations of buildings. This process involves the careful excavation of soil beneath the foundation footing, followed by the pouring of an underpinning section with the full width of the footing. A 2-inch gap is intentionally left between the original footing and the new underpinning to accommodate the application of non-shrink grout. The use of non-shrink grout is crucial, as it helps minimize concrete shrinkage and ensures seamless integration with the existing structure. By combining the stability of concrete with the flexibility of non-shrink grout, this method provides a robust and long-lasting solution for foundation reinforcement in various types of buildings across Ontario.

Non-shrink underpinning technique in Ontario, demonstrating the seamless integration of new foundation sections with existing structures.
Non-shrink underpinning technique in Ontario, demonstrating the seamless integration of new foundation sections with existing structures.

2. Overpour Type

The overpour method is another effective underpinning technique used to enhance the structural integrity of buildings. This method involves excavating the soil beneath the foundation footing and partially removing the foundation footing itself. Once completed, concrete is poured to create an underpinning section that fully overlaps with the foundation wall. To ensure minimal concrete shrinkage and optimal bonding with the existing structure, a vibrator is used during the pouring process. By overlapping the new underpinning section with the foundation wall, this method provides superior load transfer and improved structural support, making it a popular choice for reinforcing the foundations of buildings throughout Ontario.

Overpour underpinning method in action, showcasing superior load transfer and improved structural support for Ontario buildings.
Non-shrink underpinning technique in Ontario, demonstrating the seamless integration of new foundation sections with existing structures.

3. Flush-with-the-Wall Type 

The flush-with-the-wall method of underpinning is employed to deliver superior structural support and reinforcement for buildings with varying foundation requirements. This method entails excavating the soil under the foundation footing and partially removing the foundation footing itself. The concrete underpinning section is then poured flush with the foundation wall, creating an L-shaped structure that expands at the bottom to match the footprint of the foundation footing. To ensure maximum strength and durability, the underpinning section is reinforced with 15 mil metal rebars and metal rebar anchors that secure it to the foundation wall. The use of a vibrator during the pouring process is essential for minimizing concrete shrinkage and achieving a solid connection between the new underpinning section and the existing structure. With its robust design and exceptional load-bearing capacity, the flush-with-the-wall method is a proven technique for reinforcing foundations in a wide range of building projects across Ontario.

Flush-with-the-wall underpinning process in Ontario, featuring reinforced L-shaped foundation sections for robust load-bearing capacity
Type of Basement Underpinning - Flush With Wall

Comparing Bench Footing and Underpinning

Both bench footing and underpinning have their advantages and disadvantages. Bench footing can lower basement floors with less impact on the foundation walls while underpinning is better suited for reinforcing existing walls. However, bench footing may require more extensive support during the process.

Bench Footing Costs vs. Underpinning Costs in Toronto

When considering the costs of bench footing and underpinning for your home, it is essential to note the differences in pricing for each method. As of 2023, the approximate cost for bench footing is around $300 CAD per linear foot, while underpinning is priced at around $420 CAD per linear foot of the foundation wall. These prices may vary depending on factors such as the complexity of the project, the specific requirements of your home, and any additional work needed to ensure a successful outcome. It is crucial to carefully evaluate the costs and benefits of each method, taking into account your unique circumstances and project goals, to determine the most cost effective and suitable solution for your home’s foundation reinforcement or basement lowering project.

When to Choose Bench Footing

Bench footing is often used in situations where the underpinning method is not feasible or practical. For instance, in a semi-detached building with a common wall, bench footing may be the preferred choice when neighbours do not grant permission to underpin the shared wall. Another scenario where bench footing might be more suitable is when a detached building is too close to the underpinning foundation, and there is a risk of undermining the angle of repose. In such cases, bench footing offers an alternative solution for stabilizing and reinforcing the foundation without the need for underpinning, allowing homeowners to proceed with their basement lowering or foundation reinforcement projects without compromising the structural integrity of their homes or neighbouring properties.

When to Choose Underpinning

The underpinning method is a popular choice among Toronto homeowners when it comes to lowering the basement floor and maximizing the basement area. By reinforcing and stabilizing the foundation walls, underpinning allows homeowners to create additional living space in their basements, increasing both the functionality and value of their homes. With its proven track record and ability to address a variety of foundation issues, underpinning has become a preferred solution for many homeowners in Toronto who are looking to enhance their living space and make the most of their basements.

Assessing Your Home's Needs DIY vs. Professional Help

While some homeowners may be tempted to tackle basement lowering or foundation reinforcement projects themselves, it’s crucial to consider the potential risks and challenges. Incorrectly executing these projects can lead to costly mistakes and even damage your home’s structural integrity.

When to Seek Expert Advice

If you’re unsure whether your home improvement project requires bench footing or underpinning, it’s best to consult with a professional. They can assess your home’s specific needs and recommend the most suitable method for your project.

Choosing the Right Contractor

Finding the right contractor is crucial for the success of your project. Look for professionals with extensive experience in bench footing and underpinning in Toronto. Ensure they have a solid reputation and can provide references from previous clients.

What to Look for in a Contractor

When searching for a contractor, consider the following factors:

  1. Experience: Find a contractor with a proven track record in bench footing or underpinning projects.
  2. Reputation: Check online reviews and ask for references to ensure the contractor has a positive reputation.
  3. Licenses and insurance: Make sure the contractor is licensed and insured to protect yourself from potential issues.
  4. Communication: Choose a contractor who communicates well and keeps you informed throughout the project.
  5. Written estimates: Get a detailed, written estimate to avoid unexpected costs during the project.

Conclusion

Whether you need bench footing or underpinning in Toronto, it’s crucial to understand the differences between these methods and determine which one is best suited for your home improvement project. Consult with a professional to assess your home’s needs and ensure the success of your project. Remember, choosing the right contractor is essential, so take the time to find someone with the experience and reputation you can trust.

Basement Underpinning FAQs

Most frequent questions and answers

The primary difference between bench footing and underpinning lies in their specific applications and suitability for different situations. Bench footing is often chosen when underpinning is not practical or feasible, such as in semi-detached buildings with a common wall where neighbours do not permit underpinning of the shared wall. It is also preferred when a detached building is too close to the underpinning foundation, and there is a risk of undermining the angle of repose. In these cases, bench footing provides an alternative solution for stabilizing and reinforcing the foundation without compromising the structural integrity of the home or neighbouring properties. On the other hand, underpinning is a popular choice among Toronto homeowners for lowering the basement floor and maximizing the basement area. It involves reinforcing and stabilizing the foundation walls, which allows for additional living space in the basement and increases the home’s functionality and value. Underpinning is a preferred solution for many homeowners in Toronto who wish to enhance their living space and make the most of their basements, as it has a proven track record and can address various foundation issues.

Determining whether bench footing or underpinning is the most suitable method for your project depends on several factors, including the foundation condition, soil condition, zoning, and client preferences. To make an informed decision, it is essential to consult with a professional engineer who has experience in foundation reinforcement and basement-lowering projects. The engineer will assess your specific building’s needs and recommend the most appropriate method based on their findings and your preferences. By seeking expert advice, you can ensure that you choose the right method for your project, resulting in a successful outcome and a secure foundation for your home.

While it may be tempting to tackle these projects yourself, it’s crucial to consider the potential risks and challenges. Incorrectly executing these projects can lead to costly mistakes and even damage your home’s structural integrity.

In Toronto, the cost of bench footing and underpinning varies based on the method chosen. As of 2023, bench footing typically costs around $300 CAD per linear foot, while underpinning is priced at around $420 CAD per linear foot of the foundation wall. Keep in mind that these prices may change depending on factors such as project complexity, specific requirements of your home, and any additional work needed for a successful outcome. It’s essential to carefully evaluate the costs and benefits of each method in relation to your unique circumstances and project goals to determine the most cost-effective and suitable solution for your home’s foundation reinforcement or basement lowering project.

Look for professionals with extensive experience in bench footing and underpinning, a solid reputation, and the necessary licenses and insurance. Communication and written estimates are also essential factors to consider.

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SELECTING THE BEST WATERPROOFING METHOD FOR LOWERED BASEMENTS
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