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What You Should Know About Cellar Waterproofing

If you’re interested in waterproofing your cellar, you have a few options. You can either use a membrane system, or you can opt for traditional methods. In either case, you need to waterproof the walls and ceiling. Cellar waterproofing should also include the use of interior waterproof paint.

Basement tanking

Waterproofing a cellar is a complicated process that involves several materials and techniques. It can involve the use of sealant materials, sump pumps, and drains. A professional will know which of these options is best for your home. Here are some things you should know about basement waterproofing.

Firstly, you need to make sure your existing basement walls and floor are in good condition. It is important to check that the waterproof membrane on the walls and floors is in good condition before applying any tanking solution. You should apply the slurry vertically and in layers of around 100mm. This will help create a concave arch-like structure.

Once the slurry is applied, you should give it 24 to 72 hours to cure. Otherwise, you might end up with a wet and sticky mess. This is caused by water vapour condensing on the cold surface of the dry slurry.

Membranous systems

The type of basement waterproofing solution you choose will depend on the specific needs of your cellar. Type A waterproofing systems use a physical barrier to prevent water from penetrating the structure. They are generally installed during construction. Common examples of type A solutions include RIW Sheetseal, Delta Deuxan 2C, and cellar retaining wall waterproofing membranes.

Membranous systems are also available in different types. Among them are single-ply EPDM membrane, which is the most effective option in a high-water table area. EPDM membranes can also be applied as loose lay, making them the most versatile. Unlike other types of waterproofing, however, EPDM membranes cannot be removed or repositioned once installed.

Another type of cellar waterproofing system is a cavity drain system. This system is one of the most common options, as it creates a continuous envelope in the cellar that prevents damp and water from seeping in. This type of waterproofing system comes in a kit that contains everything you need to waterproof your cellar. It includes stud fixings, a waterproofing membrane, and a screed.

Traditional methods

Traditional methods of cellar waterproofing involve a cementitious layer which forms a barrier to prevent water from seeping into the cellar. This method works well in most cases, but it can become susceptible to cracks due to excessive moisture in the soil surrounding the cellar or vibrations in the earth. This is where a French drain or an external drainage system comes in handy.

Another option is a drainage mat, which creates a drainage space and a capillary break. Drainage mats have many benefits and can reduce the need for granular backfill. While drainage mats work well in conjunction with a properly functioning footing drain system, they may not be enough to prevent water from accumulating around the foundation.

Whether you opt for a waterproofing system with a sump pump or a water drainage track, a drainage system is an essential component for a water-proof basement. These systems typically run along the walls of a basement and channel water to a sump pump. The sump pump will then remove the water. There are many types of drainage systems for basements, but the most important consideration is whether or not your home has a footer. Homes built after 1950 usually have footers and a water tunnel drainage system.


There are a variety of costs involved in cellar waterproofing. These costs vary greatly, ranging from $500 to $15,000. Some types of waterproofing are done on the inside and others on the outside. Choosing the right method for your home will ultimately determine the cost of the project. Generally, exterior waterproofing is more expensive than interior waterproofing. This is because exterior waterproofing usually requires excavation and extensive prep work.

The size of your cellar is an important factor in calculating the cost of the waterproofing process. The deeper the foundation is, the deeper the work will be. Also, the deeper the foundation, the more waterproofing is needed. The depth of the foundation should be at least four feet below the frost line, or the basement will be much more difficult to waterproof.

Bentonite sheets are an effective method of waterproofing a basement. They cost about $3 to $4 per square foot and can fill cracks on the exterior of a basement. Bentonite is a clay-based material that expands when in contact with water. This helps prevent future cracks from developing. Bentonite sheets are particularly effective if you live in an area with wet soil. However, they are not a permanent solution and should be used sparingly.



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