The cost of basement construction depends on several factors, including the size of the basement, the ground conditions, the intended use of the space, and the waterproofing system required. Every project is unique, so we recommend arranging a professional survey, where one of our experienced surveyors can assess your property and provide a detailed, no-obligation quotation tailored to your requirements.
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Delta Membranes
Delta Membranes Systems Ltd is a world leader in providing waterproofing systems, specifically manufactured for new, retrofit and refurbishment construction. With over 125 years of manufacturing experience they have become masters of producing the highest quality Type C waterproofing products.
At Universal Basement Waterproofing Ltd, we supply and install trusted Delta Membrane products. Delta Membrane Systems have trained our Technicians to understand the use, theory and practical application of every Delta product we install. Our long-established relationship with Delta Membranes means we have a direct line of contact with senior Technical Support Team support and Chris Burbridge their esteemed Managing Director who never fails to answer a call or email query, he is truly one in a million gentlemen.
Delta MS-500 Membrane
Delta MS-500 is a market leading cavity drain system membrane that can be used for waterproofing walls, floors and vaulted ceilings both above and below ground. The MS-500 membrane can be installed in new constructions as well as existing buildings over a damp background.
This particular Delta Membrane product consists of an 8mm studded profile, high density polyethylene (HDPE). Its application is appropriate for the installation on internal facing walls and floors. It is a water controlling and drained management system which offers elite level protection for sub-ground structures from the ingress and damaging effects of water and damp.
The Delta MS-500 membrane is used in conjunction with a varying array of Delta Cavity Drainage Solutions, all of which Universal Basement Waterproofing Ltd are approved to install.
Delta MS-20 Membrane
Similar to the Delta MS-500 membrane, the MS-20 membrane system is constructed of high-density Polyethylene (HDPE). The difference between the two however is that the MS-20 membrane consists of a 20mm studded profile which gives the product much higher strength and durability.
With the space to hold a considerably large amount of water, this is ideally suited for floor application. At Universal Basement Waterproofing Ltd we consider the Delta MS-20 Membrane the best solution for basement floor drainage.
AlertMaxx2 – High Level Alarm and Monitoring System
The AlertMaxx2 is a high-water level alarm and monitoring system which works in conjunction with your sump pump and connects via your WiFi internet connection. The AlertMaxx2 monitors the pump stations performance which not only improves efficiency but also reduces energy consumption.
The AlertMaxx2 uses highly intelligent sensors that carry out regular health checks on your sump pumps performance and condition.
AlertMaxx2 will be able to keep a track of how your drainage system is operating at any given time, and in the unlikely situation that you would be alerted, you can be rest assured that the Delta AlertMaxx2 will inform you when you most need to know.
Delta V3 Dual Sump Pump for Basement & Cellar Drainage
Delta’s Dual V3 Sump Pump is specifically designed to work under the most arduous of environments. The Dual V3 pump station works directly with the Delta Cavity Drainage System to collect ground water via a perimeter channel or 110mm pipe (Delta 129 detail).
The Delta V3 pumps are highly reliable, with one pump acting as back up to the first, used in conjunction with the AlertMaxx2 and Battery back-up heights with a state-of-the-art ground water drainage system that will keep any home or property dry and free from risk of water and damp damage.
Dual V3.1 Sump Pump for below ground drainage
The Dual V3.1 package pump station has been specifically designed for where space is limited or for jobs where 1 or less 110mm inlet/spigot is required.
The Dual V3.1 is suitable for collecting ground water and grey water waste from showers and hand basins but not foul waste from a WC and the two should never be mixed.
The Dual V3.1 Sump Pump effectively works in the exact same manner as the previously described Dual V3 Sump Pump.
PowerMaxx Battery Back-up Basement Protection
The Delta PowerMaxx Battery Back-up unit provides reliable battery backup in the scenario where a power failure occurs, this absolutely ensures that you property stays dry even during a power outage for example.
In the situation of a bad power outage the battery back-up unit will kick in and keep your sump pumps running as effectively and efficiently as ever. A flooded property can result in the unwanted expense of costly repair work, so why take the risk?
DualProof – Pre-applied, fully bonded membrane
Delta DualProof is a product that creates a full and permanent bond, it is a pre-applied membrane that is installed prior to the steel reinforcement is fitted and the concrete is poured. The membrane consists of a dual layer, highly flexible PVC, which is laminated with a non-woven PP-fleece.
The DualProof membrane is installed without the use of heat of an open flame, the membrane is designed specifically to attach itself directly to the concrete, keeping out ground water/damp, and natural gases.
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Frequently Asked Questions
In many cases, basement waterproofing alone does not require planning permission. However, basement construction, excavation, or significant structural alterations may require planning approval and Building Regulations compliance, particularly in certain London boroughs or conservation areas. We can advise you during your survey and help you understand any permissions your project may require.
The duration of a basement waterproofing project depends on the size and complexity of the work. Smaller waterproofing installations can often be completed within a few days, while larger basement construction or full structural waterproofing projects may take several weeks. Following your survey, we’ll provide a clear project schedule so you know exactly what to expect.
There is no single waterproofing system that is suitable for every property. The most effective solution depends on factors such as the construction of the building, ground conditions, water ingress risk, and how you intend to use the basement. Our experienced surveyors will assess your property and recommend the most appropriate BS8102-compliant waterproofing system, whether that’s a Type A (barrier protection), Type C (cavity drain membrane), or a combined system for maximum protection. We only install proven products from leading manufacturers, including Delta, KÖSTER, and Sika.
Yes. We install high-quality waterproofing systems from leading manufacturers such as Delta, KÖSTER, and Sika, following BS8102 standards for below-ground waterproofing. Our waterproofing systems are fully guaranteed, giving you confidence that your basement will remain dry and protected for years to come. We’ll explain the guarantees available during your survey.
We provide basement construction and structural waterproofing services throughout London, Kent, Surrey, Essex, Sussex, and the surrounding areas. If you’re unsure whether we cover your location, simply get in touch and our team will be happy to help.
Yes. We regularly waterproof existing basements, cellars, and vaults, whether they’re affected by damp, water ingress, or you’re planning to convert the space into a dry, usable room. Every property is different, so we carry out a professional survey to identify the cause of the problem before recommending the most suitable waterproofing solution. Our systems are designed to provide long-term protection while complying with BS8102 standards for below-ground structures.
With over 50 years of experience, Universal Basement Waterproofing has designed and installed waterproofing systems for properties across London and the South East. Our experienced surveyors design BS8102-compliant waterproofing solutions using trusted systems from Delta, KÖSTER, and Sika. From initial survey through to installation, we focus on delivering long-lasting, fully guaranteed waterproofing solutions tailored to every property.
We aim to arrange surveys as quickly as possible, subject to availability. During your survey, one of our experienced waterproofing specialists will assess your basement, discuss your requirements, identify any issues with damp or water ingress, and recommend the most suitable waterproofing solution. You’ll then receive a detailed, no-obligation quotation for the work required.