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Basement & Structural Waterproofing

Specialist basement tanking and waterproofing solutions for below-ground structures.

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Below Ground Experts in Suffolk, Norfolk & Essex

Waterproofing below-ground structures requires a completely different approach to standard damp proofing. When a room is earth-retaining (like a cellar, basement, or semi-basement), it is subject to hydrostatic pressure—the immense weight of the groundwater pushing against the walls and floor.

Standard damp proof courses or water-repellent paints cannot withstand this pressure. To create a dry, habitable environment, you need a robust, structural waterproofing system designed to BS 8102:2022 standards.

At KDS Property Preservation, we are specialists in converting damp, dark cellars into valuable living spaces. Whether you need a simple dry storage area or a fully habitable cinema room or gym, we design and install the correct system for your property.

Our Waterproofing Systems in Suffolk, Norfolk & Essex

We utilise the three types of waterproofing defined in British Standard 8102:2022.

Type A: Barrier Protection

Often called "tanking". This involves applying a waterproof material to the walls and floor (either internally or externally) to physically block water ingress. We use multi-coat cementitious slurries that bond to the masonry.

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Type C: Cavity Drainage

The most reliable system for old buildings. We install a studded plastic membrane that allows water to enter behind it, depressurises it, and guides it down to a perimeter drainage channel and sump pump system for safe removal.

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Basement Conversions

A full design-and-build service to turn your damp cellar into a stunning new room. We handle everything from the initial waterproofing design to the dry lining, plastering, and insulation.

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Why Design Matters in Suffolk, Norfolk & Essex

Waterproofing failures are almost always due to poor design, not bad materials. If a system isn't designed to cope with the worst-case scenario (e.g., a burst water main or flash flooding), it isn't robust enough.

Experienced Specialists

Our specialists have extensive experience in structural waterproofing design and installation.

Dual Systems

For high-risk projects, we often combine Type A and Type C systems for ultimate protection.

Maintainable

We design systems with flushing ports so drainage channels can be serviced easily.

Reclaim Your Basement in Suffolk, Norfolk & Essex

Add value and space to your home. Contact us for a structural waterproofing design consultation.

Basement Tanking Specialists
Sump Pump Installation
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Waterproofing & Tanking

Planning a below-ground waterproofing system

Why does system design consider drainage and future access?

Some basement systems manage water that passes through the structure by collecting it behind a membrane and directing it to a drainage channel or sump. Those components need suitable routes, discharge arrangements and access for inspection or maintenance. Other approaches work differently, so the right design depends on the structure, water conditions and intended room use. These practical constraints should be considered alongside the visible damp patch, not after installation.

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