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Cellar Tanking

What Is Cellar Tanking?

Tanking is the process of coating the walls, floors, and occasionally the ceiling of a cellar with a waterproof cement or cementitious slurry. It is used to treat damp walls by preventing water infiltration and effectively making the walls waterproof indefinitely.

Because basement walls are often below ground, water from the surrounding earth can permeate the building and transport salts and minerals with it.

The tanking slurry is made to address these problems and can be put straight to damp walls that have been properly prepared. The tanking slurry cures to form a waterproof barrier that keeps water out and damp out.

Cellar tanking is a method of preventing moist walls, leaks, and flooding in your basement space. This is why we’ve put together this handy how-to guide to give you everything you need to get started tanking a cellar to keep it waterproof and ready to use as a dry, usable Place.

Why Is It Important To Waterproof A Cellar?

The lateral damp penetration of cellar walls and flooring is common. This is the passage of water or moisture from the surrounding ground into the cellar.

This can result in a damp, unsuitable space, which can lead to the following problems:

Flooding is a threat.

Mould problems may arise as a result.

Create an issue with woodworm and other wood-boring insects.

Moist or dry rot difficulties arise.

However, cellars, vaults, and other underground spaces can be converted into a basement or cellar conversion using specialized waterproofing procedures, which will not only add space to your home but also boost its value.

basement conversion in terraced house image by jody stewart

What Is The Best Way To Tank A Cellar?

When considering cellar tanking, many individuals worry if they should wait until the walls have dried out first. Cementitious tanking slurry and bitumen tanking membrane sheets are meant to start the process by being put straight to wet walls or the cellar floor.

The professionals will apply a minimum of two coatings of bitumen tanking slurry, or more, depending on the circumstances, after removing damaged plaster and treating mould, fungus, or other impurities as needed. The first should be applied horizontally to the wall and down to the connection between the wall and the floor. Within 24 hours, the tanking should be touch dry and capable of supporting a second coat. If you’re going to leave the tanking exposed before putting a finish or plaster to the brickwork, you’ll need to apply an extra spatter coat to guarantee a good key before rendering.

To prevent penetrating damp problems, damp proof membranes can be fastened to the wall by drilling plugs into the brickwork. Our professionals will secure the tanking membrane to the wall by drilling specially engineered studs that will retain the membrane’s fixings. The sheets will overlap when installing the membrane, and connections must be sealed with waterproof tape to eliminate gaps.

Best of all, the tanking membrane can have to render or plaster finishes put directly to it, or it can be used behind fake walls or galvanized steel trunking if you’re planning a cellar conversion.

Survey of Cellar Tanking

The professional and qualified damp surveyors understand the necessity of precisely diagnosing the origin of the damp problem in your property, no matter what type of damp problem you have. Following the diagnosis of the damp problem, a cost-effective remedy will be designed for your below-ground region to resolve the damp issue.

Cellar & Basement Tanking | Archer Specialist Treatments

What Are the Benefits of Cellar Tanking?

The practise of placing a waterproof layer that functions as a covering on the walls and floor of a cellar or basement area are known as cellar tanking (also known as basement tanking). This waterproof coating functions as a water repellant, completely waterproofing your cellar and keeping it dry even when wet and moist conditions exist. If you decide to convert your cellar to a living space, cellar and basement tanking is an excellent technique to waterproof your basement (or basement conversion).

Tanking your cellar makes it waterproof, which is necessary if you plan to utilize it for living purposes. If you plan on using your room for anything that will keep people in there for lengthy periods, tanking a basement eliminates any unfavourable health problems you or your family may be exposed to.

It is possible to tank a cellar in a variety of methods. Tanking slurry blocks have been described as one of the most effective and efficient basement tanking techniques because they prevent water and other moisture from entering the basement, unlike other methods that only redirect the flow of water.

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What is damp?

Damp is a common problem, that properties across the UK will suffer from at some stage. If untreated, damp can be extremely damaging to the structure and fabric of your home.

If you are unsure what causes structural dampness, it is the presence of unwanted moisture in the structure of a building. Dampness is caused by either the result of penetration from outside or damp created within the property.

Why does damp occur?

A high proportion of damp problems in buildings is caused by penetrating damp and rising damp. In most cases, dampness is caused by defects or damage to a building like defective roof coverings, render or rainwater gutters and downpipes.

Where can dampness be found?

Dampness can be found anywhere in a building and can affect all types of properties, old and new. It is important that when dampness is suspected you get an accurate diagnosis to determine the type of damp and the cause of the problem. 

How can I identify dampness?

At Damp Proofing Specialists, we use a wide range of instruments and techniques in conjunction with our experience to investigate and identify the presence of excessive moisture in buildings. It is important that a professional surveyor assesses your property to determine what is causing the damp.

Is my property damp proof?

It is vital that your property has a damp proofed structure that will protect the building from problems such as penetrating damp, rising damp and below ground damp.

A Damp Proofing system is a moisture control barrier that can be applied to walls, floors and the structure to prevent moisture from passing into the interior living spaces. Damp issues in buildings is extremely common in the UK and damp remedial treatment is one of the most common property care repairs.

What is damp proofing membrane?

The ground below your floor should have a damp-proof membrane to stop damp coming from the ground and a damp-proof membrane can be applied to the internal side of an external wall to stop damp getting to your plaster and decoration. These membranes are also used on wall areas that are below ground level that can be affected by penetrating damp from the ground.

Why remove plaster during damp proofing?

Plaster must be removed during the damp proofing process as rising damp coming from the ground not only brings moisture but also brings hygroscopic salts, nitrates, and chlorides.

Hygroscopic salts attract moisture from the atmosphere. These salts will contaminate the plaster inside the property and even after a remedial DPC has been inserted the salt contaminated plaster can still become damp. It is vital that contaminated plaster is stripped and replaced during the treatment.