Basement Waterproofing in London & Surrey

Basement Waterproofing

Atruss Preservation are specialists in basement waterproofing and structural tanking systems across South London. We design and install systems in line with BS8102:2022 to protect your property from water ingress and damp.

Types of Waterproofing Systems (BS8102)

British Standard BS8102 defines three main waterproofing methods used to protect below ground structures:

Type A – Tanking (Barrier Protection)

Cementitious tanking systems such as Sika1 create a waterproof barrier applied directly to walls and floors. These systems prevent water entering the structure.

Type B – Structurally Integral

Waterproofing built into the structure using reinforced watertight concrete. Common in new builds and basement construction.

Type C – Cavity Drain Systems

Internal drainage membranes collect water and direct it to a sump pump system for safe removal.

Cementitious Tanking (Sika1 Systems)

Sika1 tanking systems are a trusted waterproofing solution using cement-based waterproof renders. These are ideal for basements, cellars and retaining walls where a physical barrier is required.

• Multi-coat waterproof render system
• Prevents water penetration under pressure
• Suitable for internal and external applications

Sump Pump & Drainage Systems

For high water table areas, we install cavity drainage systems combined with sump pumps. These systems manage water by collecting and pumping it safely away from your property.

• Perimeter drainage channels
• High-performance sump pumps
• Battery backup systems available
• Maintainable long-term solution

Areas We Cover

We provide waterproofing and tanking services across: