Your Basement Conversion's Waterproofing Guide in London

Your Basement Conversion's Waterproofing Guide in London

Basement waterproofing becomes necessary when a structure or property or any part of it is constructed at ground level or below. In some cases, there tends to be an accumulation of water, in the surrounding ground causing the water table to rise and resulting in pressure. This pressure affects the basement floor and walls potentially leading to water seepage through cracks, joints, and structural vulnerabilities. If basement waterproofing is not carried out this water intrusion can give rise to problems, like mold growth, decay, structural issues, and other damp-related concerns.

How Basement Waterproofing Works?

Given that the basement is prone to experiencing levels of water pressure due to the accumulation of water in the surrounding ground and soil, it's not surprising that this pressure can result in cracks, leaks, and dampness issues. By applying the correct waterproofing solution you can prevent water from seeping into your basement.

To transform your basement into a functional space below your home, we offer three solutions. The first is tanking, which forms a watertight barrier to prevent moisture penetration. Another option is installing proofing solutions during the construction phase of the building. Lastly, we have a Cavity drain membrane solution that utilizes a combination of membranes, drainage channels and pumps to redirect water from your property. We can also tailor a solution by combining systems for the best results.

Ways to Waterproof Your Basement?

In the Basement waterproofing industry people often talk about the three systems, namely type A, B, and C. It's worth noting that a combination of these systems might be utilized to ensure the best and most effective solution for your basement or cellar. The final decision on which system suits your needs will be determined after a site inspection conducted by one of our surveyors.

Type A Waterproofing - Barrier System

This is where a physical barrier is used to protect the basement or cellar walls and prevent water from getting in. Type A waterproofing, commonly known as "Tanking " involves applying membranes, waterproof cement, or a slurry, to the walls below ground level. For new basement constructions, Type A external waterproofing applies the tanking barrier membrane. Slurry, to the outer wall of the structure, preventing groundwater from entering. During building renovations or after construction, Type A waterproofing can be installed on the basement walls.

Type B Waterproofing - Integrated Systems

This pertains to the waterproofing solutions that are incorporated into the building structure during the construction phase. Typically Type B waterproofing includes using reinforced concrete and implementing a water control mechanism to prevent any water seepage through construction joints (like a hydrophilic waterbar). It is important to involve our team of waterproofing specialists right from the initial design stage of your project if you wish to have a Type B system installed on your property.

Type C Internal Waterproofing

This method is considered the most up-to-date technique for waterproofing a basement or cellar. It involves combining a waterproofing membrane, basement floor drainage, and a sump pump to effectively and securely remove any water. To create a dry internal surface Cavity Drain Membranes utilize a studded membrane that lines the walls and floors.

Afterward, the walls can be dry lined or Plastered, while the floors can be screeded or overlaid with materials like waterproof floorboards or tongue and groove flooring. Sealed systems are used in conjunction with either a cavity drain system or a sump pump when dealing with water or flooding. On the other hand ventilated systems are used in situations where there is no water and when traditional damp-proofing methods are not suitable. Both of these systems can be designed to comply with BS8102, which is the code of practice governing waterproofing structures.