When it comes to foundation waterproofing in London, it is a process that has to be done to the highest standard, which is what the team at Dry Systems is all about. Foundation waterproofing is the process of preventing water from entering a basement from outside. It involves installing a system that can prevent water ingress into the structure as well as effectively deal with hydrostatic pressure.
Having a waterproofing foundation system in your London structure keeps water away from your walls but also allows any water to drain away safely, a critical element for any building. There are a few foundation waterproofing options available, with different systems and related products to choose from. In order to satisfy insurance companies, you need to combine two waterproofing methods to ensure full protection.
Put simply, foundation waterproofing in London buildings is a critical element of any construction project. This process protects any below-ground structure from water ingress as well as potential radon protection with the right type of products.
Foundation waterproofing helps prevent water and ground gases from entering a property, allowing you to mitigate the risk of significant damage to belongings and protect the health of inhabitants.
It’s even more important for properties located in areas at risk from flooding or with high water tables. It is also a requirement of BS: 8102 that earth-retaining structures are protected by at least two waterproofing methods. These can be the following:
Getting foundation waterproofing done well is critical, and if your foundation walls aren’t constructed from waterproof concrete, then it is a requirement of BS8102: 2009 to install an exterior foundation waterproofing system at your London site. It’s essential to complete the foundation waterproofing in a correct way and ensure it is given the respect it deserves during the construction process.
The foundation waterproofing systems that our London teams use are designed to provide complete protection from water ingress. The best exterior foundation waterproofing in London offers systems made up of a primary and secondary waterproofing layer, with an initial priming stage. The specific waterproofing technique depends on the system and products used – we will take you through the Dry System foundation waterproofing system.
Our foundation waterproofing work in London is a system with four main components:
Primer – Prevents the moisture from passing through the foundation wall
Primary waterproofing layer which forms a watertight barrier
Secondary Waterproofing – An external cavity drain membrane that removes hydrostatic water pressure from structures
Drain with inspection ports which moves water away – to a safe point
Any foundation waterproofing system at your London site needs to start with priming to the concrete or masonry foundation walls. This primer helps ensure a good bond with the primary waterproofing layer.
Next, you need a primary foundation waterproofing layer of specially-designed coating that is watertight even under high hydrostatic water pressure. It also protects against radon. It is flexible which means that it can cope with expansion as well as bridging any cracks that may occur.
All foundation waterproofing work in London ends with the final part of the system, a cavity drainage membrane and drain system. This allows any water surrounding the building to drain freely through a cavity created by a unique stud profile. Any water then drains down to the land drain or French drain situated below floor level, which then transports the water to a suitable soak away or sump chamber.
At Dry Systems Ltd., our foundation waterproofing system work in London requires a foundation waterproofing membrane, a job done by channeling water away from your foundation walls as well as protecting the primary waterproofing layer. It also prevents water pressure from bearing against the structure and causing damage. There are some key considerations when choosing a foundation membrane and doing foundation waterproofing in London.
For any foundation waterproofing job at London sites, the foundation wall membrane is normally made from plastic and features a stud profile that creates a cavity for any water to drain down. The water can then enter a French drain or land drain where it can be channeled away to an appropriate place.
You want to opt for a membrane that has an integral fabric layer to prevent any fines from entering the foundation drainage system and cause blockages and other issues. As an added benefit, these foundation wall membranes protect your primary waterproofing layer. We cover the installation of foundation waterproofing membranes as well as drainage in more detail later.
When the team at Dry Systems uses this kind of foundation waterproofing system in London, we help create both a primary and secondary waterproofing barrier. By using these methods together, you greatly minimise the risk of defects. Both waterproofing methods are also highly flexible. This gives you confidence that as the building settles or moves in the future that the external masonry waterproofing will move with it and remain watertight.