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Tanking Slurry

Tanking slurry solutions by London Property Preservation provides a robust, durable solution for waterproofing requirements. Expertly designed to combat moisture and dampness, our tanking slurry is ideal for both new and existing structures, ensuring long-lasting protection and peace of mind in your property’s defence against water ingress.
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What Is Tanking Slurry?

Tanking slurry is a cementitious waterproof coating designed to provide an impenetrable barrier against water and dampness in structures. Typically composed of Portland cement, graded aggregates, and chemical modifiers, it’s mixed with water to form a slurry. When applied to walls, floors, and other surfaces, it cures to form a hard, dense barrier, preventing the passage of water and moisture. This method is especially effective in below-ground waterproofing applications like basements, cellars, and tunnels. Tanking slurry can adhere to various substrates, including concrete, brick, and stone, making it a versatile solution for waterproofing both old and new buildings. It is favoured in situations where conventional damp proofing is not feasible or has failed, offering a reliable and durable option for tackling pervasive damp issues.

wall slurry

How Tanking Slurry Works

Tanking slurry works by creating a waterproof barrier that adheres to the substrate, preventing water from penetrating the surface. Upon application, its water-reactive chemicals enable it to penetrate the substrate’s pores, effectively sealing them against moisture ingress. As it dries and hardens, the slurry forms a dense, impermeable layer that locks out water. This layer is resistant not just to liquid water, but also to water vapour, making it an excellent choice for damp-proofing basements, cellars, and other moisture-prone areas. The effectiveness of tanking slurry lies in its ability to withstand external hydrostatic pressure, meaning it remains intact and functional even under conditions where water pressure is high, such as in below-ground level settings. This characteristic makes it a superior choice in areas where groundwater levels are high or where seasonal changes can increase water pressure against the structure.

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Why Choose Us

London Property Preservation is a local and trusted firm in the areas in and around London. With a strong passion for helping our customers combined with our great attention to detail, you can rest assured that your property is in the right hands.
Damp Solution Specialists
Our team of staff is highly knowledgeable when it comes to finding and removing dampness from your home. With many years of experience in providing damp solutions and proofing services, our team is the go-to company for any damp problems.
A Family-Run Business
London Property Preservation is a close-knit, family-run business of which we are openly proud. With open communication between the team, our services are seamless, efficient, and reliable.
Solutions That Are For The Future
At London Property Preservation, we understand that dampness can be a reoccurring issue if the root issue is not amended effectively. Our mission is to protect our customers’ homes from dampness, in the present as well as the future.

What Our Customers Say

hettie hunter
hettie hunter
Efficient, quick, honest, reliable and fantastic. Completely trustworthy and honest service. HIGHLY recommend. 👍🏻
Androulla Christofi
Androulla Christofi
James was very punctual with an easy, friendly manner. He knew what the problem was as soon as he looked at it, did further checks to confirm this and clearly informed us on what steps would be taken to address the issue and what it would involve.
Christine Bell
Christine Bell
Everyone was very pleasant, very helpful. Explained things I hadn’t realised. No complaints.
James was very professional, kind and courteous! His expertise helped put our minds at rest regarding our enquiry. Should we require anything further in the future we will not hesitate to contact James and Co.
Cliff Tate
Cliff Tate
James arrived on time, was very thorough in his investigating and informative. We would definitely use again if need be.
PA Jones
PA Jones
We have used London Property Preservation Ltd on a couple of occasions recently and have had a very positive experience. Everyone is so helpful and polite, appointments kept and any concerns always answered immediately. The work that was carried out was done to a very good standard and the properties have been left clean and tidy at the end of the job.
Brijesh Patel
Brijesh Patel
Excellent customer service from Denise from the start to the end. Work was done to a high standard & also would like to mention surveyor James who pinned pointed the cause of damp. Thank you all.

Our Process

The team at London Property Preservation understands that finding dampness in your home can be a worrying and distressing time. This is why we put great importance on providing a service that is efficient, simple, yet still accurate and reliable.
Get In Touch
The first step for anyone worried about dampness in their home is to get in touch with a friendly member of the team. From there, they can help you arrange a free damp survey, based on your date and time requirements.
A Specialist Will Survey & Investigate Your Home For Damp
Once the damp survey has been scheduled, one of our damp specialists will be around on the specified date to begin the investigation process. This will be as hassle-free as possible, to ensure there are minimal disruptions in your home.
A Plan For Damp Removal & Damp Proofing Will Be Put Together
After our specialist knows exactly what work needs doing and what the cause of the dampness is, they can then put together a plan. This will go through what method of damp proofing needs to be taken, as well as extra recommendations to avoid any future issues.

Kickstart Your Damp Proofing With Our Free Damp Surveys

How to Apply Tanking Slurry

Applying tanking slurry requires careful preparation and execution. The surface must first be clean, sound, and free from any loose material, dust, or contaminants that could impair adhesion. If necessary, repair any large cracks or holes before application. Dampen the surface lightly before applying the slurry to ensure good adhesion and to prevent premature drying. 

Mix the tanking slurry as per the manufacturer’s instructions until a uniform, lump-free consistency is achieved. Use a stiff brush, roller, or trowel to apply the slurry, covering all areas thoroughly. It’s crucial to apply the slurry evenly, with particular attention to corners and joins where walls meet floors. Apply in a minimum of two coats; the second coat should be applied perpendicular to the first to ensure full coverage. Each coat must be allowed to become ‘tacky-dry’ before the next is applied. After the final coat, ensure the area remains undisturbed while the slurry cures, forming a solid, watertight barrier.

Is Tanking Slurry Breathable?

The breathability of tanking slurry is a point of consideration, particularly in older buildings where moisture transfer is a part of the wall’s natural drying process. Traditional tanking slurry formulations are generally not breathable, creating a non-permeable barrier that blocks moisture transmission. This means that while they are excellent at preventing water ingress, they do not allow trapped moisture within the walls to escape, which can sometimes lead to issues in certain types of masonry or in structures with existing dampness problems.

However, advancements in technology have led to the development of some breathable tanking slurry products. These products allow for some degree of moisture vapour permeability, aiding in managing moisture levels within the structure while still providing an effective barrier against water ingress. It’s essential to choose the right product based on the specific needs and conditions of the building. For heritage properties or structures where moisture retention is a concern, consulting a specialist to choose a suitable breathable tanking solution is advisable.

Types of Damp Proofing

Basements are more prone to receiving dampness than other areas in a home, and therefore, basement waterproofing is a popular process for the team here. Rejuvenate your basement into a usable or living space by damp proofing.
Our plastering and replastering services allow your walls to be revived from dampness. There are many possible causes for dampness occurring on your walls, which is why we put such a strong focus on providing leading-quality plastering services.
We specialise in providing solutions and treatments for any wood or timber surfaces that are struggling with dampness. Utilising the latest techniques and equipment, you can rest assured that London Property Preservation will take care of your dry rot treatment requirements.
Rising damp, although rare is very important to treat sooner rather than later. This type of dampness can cause structural damage in the long run and should be looked at by professionals as soon as possible.
Basements are more prone to receiving dampness than other areas in a home, and therefore, basement waterproofing is a popular process for the team here. Rejuvenate your basement into a usable or living space by damp proofing.
Condensation is one of the biggest causes of dampness in UK homes, which is why condensation control solutions are crucial if your home is struggling with the correct levels of ventilation.

Tanking Slurry for Concrete Floors

Tanking slurry is highly effective for waterproofing concrete floors, particularly in basements, cellars, and industrial spaces. To ensure maximum efficacy, the concrete surface must be properly prepared: clean, free of oil, grease, or loosely adhered materials. Any existing cracks or voids should be filled and levelled.

Begin by applying a primer if recommended by the slurry manufacturer. When applying tanking slurry to concrete floors, ensure the mix is consistent, free from lumps, and prepared according to the manufacturer’s guidelines. Using a stiff brush or roller, apply the first coat evenly, focusing on achieving a comprehensive cover, especially in joint areas between floors and walls. Allow the first coat to partially dry (check specific product instructions for exact timings) before applying the second coat, ideally at right angles to the first to cover any gaps.

A crucial aspect to consider when tanking concrete floors is the potential for hydrostatic pressure buildup. Ensure any drainage issues are addressed beforehand, as tanking slurry will block water escape routes, possibly leading to pressure buildup under the slab.


Tanking Slurry for Stone Walls

Tanking slurry is an excellent choice for waterproofing stone walls, often found in older buildings and basements. The irregularity and porosity of stone can pose a challenge, making thorough preparation and application vital. Start by cleaning the stone wall, removing any moss, mould, or loose material, and repair significant gaps or cracks.

When applying tanking slurry to stone walls, consider the slurry’s ability to penetrate the stone’s irregular surface. The first coat should be applied with a stiff brush, working the slurry well into the stone to ensure it enters all the pores and cavities. Stone walls, with their varied textures and shapes, might require a bit more material to achieve an even coverage. 

Allow the first coat to dry until it’s firm but still tacky — the exact time may vary based on temperature and humidity. Apply the second coat perpendicular to the first to ensure all nooks and crannies are covered. Remember, the slurry must form a continuous, unbroken film over the wall to provide effective waterproofing. In environments with particularly high moisture, consider a third coat for extra protection.

Frequently Asked Questions

Tanking slurry offers a highly effective, durable solution for preventing water ingress in below-ground structures. Its primary advantage lies in its ability to create a solid, seamless barrier against moisture, making it ideal for waterproofing basements, cellars, and other susceptible areas.
No, tanking slurry must be applied directly to the bare substrate for effective adhesion and performance. Any paint, plaster, or other finishes should be removed completely, and the surface should be clean and free from loose debris or contaminants before applying the slurry.
The drying time for tanking slurry varies depending on the ambient temperature, humidity, and the product used. Typically, it takes about 24 hours for each coat to dry, but it’s crucial to check the manufacturer’s instructions for specific guidance. The area should remain undisturbed during drying.
While some DIY enthusiasts may feel confident applying tanking slurry, professional application is recommended for the best results. The process requires specific skills to ensure proper application, especially in dealing with challenging areas like corners and joints. A professional can also identify and address any underlying issues like structural cracks or hidden dampness.
Yes, tanking slurry is designed to withstand hydrostatic pressure and is therefore effective in areas with high groundwater levels. However, in these cases, it’s especially important to ensure that the application is correctly done to avoid any weak points where water might penetrate. In very high water table situations, additional measures such as drainage might also be needed alongside the tanking process for optimal protection.

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London Property Preservation is one of the leading property maintenance companies in South London and the surrounding areas.

Feel Free To Reach Us !

At London Damp Solutions, we invite you to connect with us for all your damp-proofing needs. Our team of experts is ready to provide tailored solutions, ensuring your property remains safe and dry. Whether it's damp surveys, dry rot treatments, or plastering, we are just a call or message away. Don't let dampness compromise your property's integrity. Reach out today for professional assistance.

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