Tanking slurry comes in powder form that you mix yourself. It’s applied in a two-coat process. Here’s how: Vandex BB White is a version of Vandex BB75 based on white Portland cement. Its characteristic white colour makes it particularly suitable for use on exposed surfaces, e.g. potable water reservoirs. Vandex BB75 Z However, walls below ground are often subject to hydrostatic water pressure and any flaw in the application of cementitious tanking can have serious consequences. Type C cavity drainage systems should be a consideration. When the first coat is dry to the touch, apply a second coat, this time in vertical brush strokes. Always apply the second coat within 24 hours. KA tanking Slurry can be applied to new or old structurally sound surfaces. It can be applied either to the negative or the positive side and will negate dampness in groundwater permeation even under hydrostatic pressure.

Now you know how to apply tanking slurry, you can ensure a professional finish and keep your property free from penetrating damp. Below ground, we would recommend you opt for cementitious tanking as outlined earlier in this article or a cavity drainage system featuring wall and floor membranes, drainage channels and sump pumps. This Type C drained protection effectively channels any water ingress down the walls to a drainage channel and to a sump chamber where it can then be pumped safely away. Vandex BB75 Z is formulated to have enhanced sulphate resistance, making it suitable for use in sewage treatment plants and sewer / manhole refurbishment projects. Vandex BB75 / BB White / BB75 Z Application Preparation Retaining walls, swimming pools, fish ponds, sewage plants, basements, cellars, car parks, garages, bathrooms and kitchens amongst many other areas. Retaining Walls and columns in reservoirs • Swimming Pools prior to tiling or painting • Concrete drinking water tanks • Water Treatment and sewerage plants • Foundation Slabs • Underground Cellars, basement car parks, garages, etc. • Pre-stressed and pre-cast concrete units • Tunnels, silos, irrigation channels • Bathrooms, kitchens, etc • Lift Shafts • Vehicle maintenance pits

Email:

Normal problems with damp and water ingress can usually be solved by applying two coats of Pro-Build Tanking Slurry over the entire surface area. The second coat should be applied at a different angle to the original coat as soon as the first coat becomes touch dry. The second coat must be applied within 24 hours of the original coat. In hot and dry conditions a fine mist of water should be sprayed over before the second coat is applied. The waiting time before applying the second layer is approximately 2 – 4 hours, depending on local climatic conditions such as humidity, temperature, etc. The first layer must not be damaged during application of the second layer. Tanking slurry is supplied as a powder that you will need to mix yourself. It is essential that you apply tanking slurry with the proper direction, following manufacturer’s instructions. Above ground, we recommend a 3mm mesh membrane (the mesh provides an excellent key for dot and dab plasterboard or direct rendering) or 3mm clear membrane that is suitable for use behind stud work. When it comes to below ground, it often pays to stop the water before it enters the building. Cementitious tanking slurries are a very successful way to achieve this and effectively tank a basement. Not every waterproofing situation below ground requires a cavity drain membrane. Many european countries do not use cavity drain membranes and rely on cementitious systems.

If applying with a brush use a medium hard short bristled brush. You can apply the second coat with a trowel to provide a dense polished finish. More often than not, walls below ground like basements, cellars and sunken garages are surrounded by earth. This means that moisture, water pressure and ingress are serious considerations. How do you tank a wall? Damp walls are a serious issue that can affect the integrity of the building, damage the property and cause health issues.It can be applied either to the negative or the positive side and will negate dampness in ground water permeation even under hydrostatic pressure. Below ground, you can use tanking slurry by itself as a form of Type A Waterproofing (barrier system). This offers you reliable protection from water ingress. Having said that, many people like the reassurance of drained protection with a cavity drainage system ( wall& floor membranes and sump pumps). If there is already water ingress of a substantial volume in a cellar or basement, you can use the tanking slurry to reduce the load on the system and the pumps before installation. If you're unsure which basement waterproofing method is best for you, then read our guide. In addition, PermaSEAL Tanking Slurrycontains an acrylic polymer that imparts improved strength, bonding and abrasion resistance. After hardening, PermaSEAL tanking becomes a vapour permeable and watertight coating capable of withstanding water pressure. Tanking Slurry Uses Tanking slurry can be used on a damp wall above ground to stop the passage of water. Ideally, you will want to identify and resolve the source of damp before applying it.

Ready to get started? Here at Build & Plumb, we have all you need for tanking a wall. Shop a wide range of tanking slurry from leading and trusted manufacturers including KA and Bostik. Related articles Some areas of the wall may also take longer to dry than others, and you may notice some sweating. This is caused by condensation on the cold surface and is normal during the curing process. Tanking slurry at Build & Plumb PermaSEAL Tanking should always be covered by a minimum of a 10mm coat of 4:1 sand and cement render, a 1:1:6 Lime based render or PermaSEAL Renovating Plaster. After this render coat has been applied, dot and dab plaster board, multi finish or a breathable paint can be applied. Wall tanking or “tanking” is a method of preventing water ingress by creating a completely impermeable waterproof barrier on an internal wall. When we refer to tanking walls, it's usually in reference to below ground structures like basements or as a precautionary measure on damp walls above ground. The term “tanking” comes from the idea that by completely sealing a room, a waterproof tank-like barrier is created.If using a spray applicator, the spray finish provides an “orange peel” texture which is easy to clean. The walls of a building can become damp for many reasons: building faults, penetrating damp, plumbing issues, and rising damp. Ultimately, damp walls are bad news. They can lead to structural issues as well as causing health issues. It also damages decoration, and looks and smells bad. Damp in walls is commonly caused by penetrating damp and in some rare occasions rising damp. Below ground, you may experience damp walls due to water ingress. This occurs due to hydrostatic pressure being exerted on the earth-retaining walls. Penetrating damp Cementitious tanking slurry - a paint-like substance that has been chemically engineered to form a protective barrier when applied to internal walls. Our tanking slurry is available in two colours, white and grey. As a general guide, use one colour for the first coat then the other for the second coat which makes it easier to see if you have completely covered the surface. Plastering over tanking slurry In addition, PermaSEAL Tanking Slurry contains an acrylic polymer that improves strength, bonding and abrasion resistance. After hardening, PermaSEAL tanking becomes a vapour permeable and watertight coating capable of withstanding water pressure. Tanking Slurry Uses