Tanking External Walls Below Ground Level

Tanking External Walls Below Ground Level

Protecting buildings from water ingress and potential damage is a vital step in construction. Tanking external walls below ground level is an effective method to safeguard structures against moisture infiltration. By creating a barrier on the outside of the building, we can prevent water from seeping into the masonry and causing issues like rotting timbers and structural damage.

Basement waterproofing and below-grade tanking involve using various waterproofing methods and products to ensure a watertight seal. This includes the use of waterproofing membranes specifically designed for below-ground walls, as well as tanking systems and damp-proofing solutions provided by professional waterproofing contractors. These products and methods are essential for below-ground waterproofing, preventing hydrostatic pressure from groundwater and other water sources.

When tanking external walls below ground level, different methods are employed depending on the construction style and substrate material. This can include the use of self-adhesive membrane sheets, liquid-applied membranes, tanking slurries, or a combination of these. Fillet sealing at wall-floor junctions, drainage membranes, and the installation of outer protection boards are also important components of the tanking process.

Key Takeaways:

  • External tanking protects buildings from water ingress and potential damage.
  • Tanking systems involve creating a barrier on the outside of the structure.
  • Waterproofing membranes, tanking slurries, and liquid-applied membranes are commonly used methods for tanking external walls.
  • Proper tanking prevents moisture from seeping into the masonry, avoiding issues like rotting timbers and structural damage.
  • Tanking external walls below ground level is crucial for basement waterproofing and below-grade tanking.

Methods for Tanking External Walls

When it comes to tanking external walls, there are two common methods that can be utilized: cementitious tanking slurry and waterproof tanking membranes. These methods provide effective solutions for creating a waterproof barrier and protecting buildings from water ingress.

Cementitious tanking slurry is a popular choice for tanking external walls. It is a paint-like substance made of cement fortified with polymers and aggregates. The slurry is applied to the masonry surface, penetrating the porous walls and creating a watertight bond. This method is suitable for both damp walls above ground and below-ground structures like basements.

Waterproof tanking membranes are another method for tanking external walls. These membranes are sheets of specially designed plastic material that act as a barrier against water ingress. They can be installed on damp walls above ground and are commonly used in conjunction with a cavity drainage system for below-ground applications. The membranes are fixed to the wall using plugs, creating a small cavity that allows any moisture to drain away.

“Cementitious tanking slurry and waterproof tanking membranes are both effective methods for tanking external walls and preventing water ingress. Choosing the right method depends on the specific requirements of the project.”

It is important to consider the advantages and limitations of each method when selecting the most appropriate approach for tanking external walls. Factors such as the condition of the walls, the level of water exposure, and the construction style will influence the choice of tanking method. Consulting with a professional waterproofing contractor can help determine the best approach for the specific project.

Method Advantages Limitations
Cementitious Tanking Slurry – Suitable for damp walls above ground and below-ground structures
– Easy application
– Creates a watertight bond
– Requires proper surface preparation
– May not be suitable for severe water exposure
Waterproof Tanking Membranes – Can be used on damp walls above ground and below-ground structures
– Creates a barrier against water ingress
– Compatible with cavity drainage systems
– Requires proper installation and sealing
– May require additional drainage systems for below-ground applications

Tanking Materials and Products

When it comes to tanking external walls, using the right materials and products is essential to ensure effective waterproofing. Two commonly used options are tanking slurry and tanking membranes.

Tanking Slurry

Tanking slurry, such as the popular PermaSEAL tanking slurry, offers a reliable solution for creating a waterproof barrier. This cementitious slurry can be easily applied to the walls, forming a protective layer that prevents water ingress. With its polymer and aggregate composition, tanking slurry provides excellent adhesion and durability. It is ideal for both above-ground and below-ground applications, offering a versatile solution for various construction projects.

Tanking Membranes

Tanking membranes are another option for creating a waterproof barrier on external walls. These membranes are made of high-quality HDPE (High-Density Polyethylene) and come in different thicknesses to suit specific project requirements. Tanking membranes can be used for both above-ground and below-ground applications, providing reliable protection against water ingress. When installing tanking membranes, they are fixed to the wall using specialized fixing plugs, ensuring a secure and watertight seal. Proper installation and sealing of the membranes play a crucial role in achieving long-lasting waterproofing.

Choosing the right tanking materials and products is key to the success of any external wall tanking project. Whether using tanking slurry or tanking membranes, it is important to follow the manufacturer’s instructions and ensure proper installation and sealing for optimal performance and durability.

Tanking Materials Main Features
Tanking Slurry (PermaSEAL)
  • Easy application
  • Reliable waterproofing
  • Polymer and aggregate composition
  • Suitable for above-ground and below-ground use
Tanking Membranes (HDPE)
  • High-quality HDPE material
  • Different thickness options
  • Secure fixing with specialized plugs
  • Effective waterproof barrier

By selecting the appropriate tanking materials and products, you can ensure reliable and long-lasting waterproofing for external walls, protecting your building from water ingress and potential damage.

Benefits of Tanking External Walls

Tanking external walls provides numerous advantages that contribute to the overall protection and longevity of a building. By implementing effective tanking methods, you can prevent water ingress and safeguard your structure from potential damage caused by dampness. This proactive approach helps to maintain a dry and healthy indoor environment, free from the harmful effects of moisture.

One of the key benefits of tanking external walls is the extension of the building’s lifespan. By creating a watertight barrier, you can prevent water from seeping into the walls and causing rotting timbers or structural instability. This protection ensures the structural integrity of the building, saving you from costly repairs and potential safety hazards.

Tanking external walls also plays a crucial role in improving indoor air quality. By preventing moisture from entering the building, you can significantly reduce the risk of mold and mildew growth. These harmful substances not only affect the aesthetics of your property but can also pose health risks to occupants. With proper tanking measures in place, you can create a healthier living or working environment for everyone.

Lastly, investing in tanking external walls offers peace of mind, knowing that your building is well-protected against potential water-related issues. By implementing effective tanking systems, you can avoid structural damage, maintain the value of your property, and ensure a secure and comfortable living or working space for years to come.

FAQ

What is tanking external walls below ground level?

Tanking external walls below ground level is the process of creating a waterproof barrier on the outside of a building’s structure to protect it from water ingress and potential damage.

What are the methods for tanking external walls?

Two common methods for tanking external walls are using cementitious tanking slurry and waterproof tanking membranes.

What is cementitious tanking slurry?

Cementitious tanking slurry is a paint-like substance that is applied to masonry surfaces to create a waterproof barrier. It is a mixture of cement fortified with polymers and aggregates.

What are waterproof tanking membranes?

Waterproof tanking membranes are sheets of specially designed plastic material that act as a barrier against water ingress. They can be installed on damp walls above ground and are commonly used in combination with a cavity drainage system for below-ground applications.

What materials and products are used for tanking external walls?

Tanking slurry, such as PermaSEAL tanking slurry, and tanking membranes made of high-quality HDPE are commonly used materials for tanking external walls.

What are the benefits of tanking external walls?

Tanking external walls offers several benefits, including preventing water ingress, protecting against damp, extending the life of the structure, improving indoor air quality, and avoiding expensive repairs due to water damage.

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