By combining our 40 years of extensive experience, technical expertise and a diverse product range, we are redefining solutions for your new and existing construction projects that require below-ground structural waterproofing protection.
We’re proud to be British manufacturers of Type A, B and C waterproofing systems that offer a single source warranty for your substructure protection.
However… it doesn’t stop there. Our CSSW accredited team and in-house design department means that we take full liability for the waterproofing design.
Structural waterproofing is essential for protecting buildings from water ingress, particularly in below ground areas like basements, tunnels, and foundations. By implementing effective waterproofing solutions, we ensure your property remains water resistant and secure in all conditions.
The British Standard BS 8102:2022 outlines three main types of structural waterproofing:
Using these methods in combination can enhance protection and maintain the desired internal environment and grade of waterproofing.
We work with structural engineers, architects, main contractors, and specialist installers to implement the correct waterproofing solution for the use of the space.
In the British Standard BS 8102:2022 there are four grades of environment identified to define the waterproofing performance requirement. Below is the guidance found in the British Standard:
Seepage and damp areas from internal and external sources are tolerable, where this does not impact on the proposed use of below ground structure.
Internal drainage might be necessary to deal with seepage.
An example of a Grade 1a environment might be a low-grade car park with a partially open-sided basement.
No seepage. Damp areas from internal and external sources are tolerable.
Typical car park – usually one form of waterproofing.
No seepage is acceptable. Damp areas as a result of internal air moisture/ condensation are tolerable; measures might be required to manage water vapour/condensation.
Typical scenarios would include a plant room or a lift pit, usually requiring two forms of waterproofing.
No seepage is acceptable. Damp areas as a result of internal air moisture/ condensation are tolerable; measures might be required to manage water vapour/condensation.
This would always be seen within a habitable area, where usually, two forms of waterproofing would be required with the additional ventilation – designed for the use of the space.
Seepage is sometimes referred to as weeping or slow transmission of water through discreet pathways of a structure. Whereas damp areas are considered an area which is slightly wet but with no seepage.
Prem360, a turnkey service solution, has been created to address the challenges posed by the BS 8102:2022. This comprehensive initiative serves a wide range of industry professionals, from structural consultants and architects to developers and contractors. Its prime aim is to guide these stakeholders through the transforming industry dynamics, enabling them to deliver compliant and successful projects.
Structural waterproofing can be used in a number of applications. Whilst it particularly relates to basements and below ground structures, there are many other waterproofing applications that can arise on a project, such as:
Combined structural waterproofing systems are often deployed when a Grade 2 or 3 environment is required or when protecting against ground gas risks or contaminated land, where hydrocarbons (VOCs) are present.
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