The Benefits of Cellar Tanking

Introduction: Why Cellar Tanking Matters

Across the UK, many homes have basements or cellars that go underused because of dampness, leaks, or poor air quality. At Shield Waterproofing & Preservation Ltd, we specialise in cellar tanking – a proven waterproofing solution that transforms these neglected spaces into dry, usable, and valuable areas of the home.

With our experience, industry accreditations, and long-term guarantees, we help homeowners protect their property from damp-related damage and unlock hidden potential beneath their feet.

What is Cellar Tanking?

Cellar tanking is the process of applying a waterproof barrier to the walls and floors of a below-ground space, preventing water ingress from surrounding soil and groundwater. At Shield, we use cementitious slurries, bitumen coatings, or cavity drainage membranes depending on the building’s requirements.

The idea is simple: to make your cellar as watertight as a tank. But the results are transformational – a dry, structurally sound space that can be used confidently for storage or conversion.

1. Protection Against Damp and Water Ingress

Basements and cellars sit below ground, making them highly vulnerable to:

• Lateral damp – pressure-driven moisture entering through walls
• Rising damp – water moving upward through porous substrates
• Penetrating damp – leaks through cracks or porous masonry

Our cellar tanking systems at Shield provide a continuous waterproof barrier, stopping damp at its entry point. This not only protects the basement but also prevents moisture from spreading into upper levels of the property.

2. Preventing Structural Damage

Unchecked water ingress can lead to serious structural damage. We regularly see issues such as:

• Crumbling mortar and plaster
• Spalled brickwork
• Rotting joists and timbers
• Corroding steelwork

Shield’s professional tanking solutions halt these processes, safeguarding your property’s integrity. By acting early, you avoid costly repairs and ensure your home remains structurally sound.

3. Transforming Wasted Space

The real beauty of cellar tanking is the ability to unlock valuable space. Once dry and protected, a basement can be converted into:

• A home office or study
• A family playroom or snug
• A guest suite or extra bedroom
• A stylish bar or wine cellar
• A home cinema or gym
• A practical laundry or utility room

At Shield, we regularly work with homeowners, architects, and contractors to prepare basements for full conversions, ensuring they’re dry, safe, and fit for purpose.

4. Boosting Property Value

A professionally tanked and converted cellar can significantly increase property value. Many estate agents estimate that a high-quality basement conversion can add 20–30% to the value of a home.

By choosing Shield Waterproofing & Preservation, you also benefit from our insurance-backed guarantees, giving potential buyers confidence that the waterproofing is built to last.

5. Health Benefits: Cleaner Air, Healthier Living

Damp cellars encourage mould and mildew, releasing spores that spread through the home. These can trigger or worsen:

• Asthma
• Allergies
• Respiratory conditions

By tanking your cellar with Shield, you eliminate the root cause of mould growth, protecting your family’s health and creating a safer, more comfortable living environment.

6. Lower Energy Bills

Moisture-laden walls conduct heat away faster than dry ones. Tanking your cellar helps to retain warmth inside the home, reducing heating bills. Once tanked, insulation can also be installed more effectively, further improving energy efficiency.

7. Bespoke Waterproofing Systems

Every property is unique. That’s why Shield offers tailored waterproofing solutions, including:

• Cementitious Tanking – applied as a slurry for a strong, watertight barrier.
• Bitumen Coatings – flexible, protective layers.
• Cavity Drain Membranes – channel water safely into drainage systems.
• Combination Systems – for maximum effectiveness.

Our surveyors (CSRT & CSSW qualified) will assess your cellar and recommend the most appropriate, long-term solution.

8. Long-Term Guarantees and Peace of Mind

At Shield, our cellar tanking isn’t just a temporary fix. We provide systems designed to last for decades, supported by long-term insurance-backed guarantees. This gives our customers complete peace of mind that their property is protected for the future.

9. Supporting Future Renovations

If you plan to install underfloor heating, create a bathroom, or convert your cellar into living space, tanking is the essential first step. Shield’s waterproofing ensures your investment in décor and fittings is protected from future damp damage.

10. Compliance with Building Regulations

If you’re converting a basement into a habitable room, UK Building Regulations require adequate waterproofing. Our tanking systems help ensure your project passes inspections smoothly and meets all regulatory requirements.

11. A Greener Choice

By converting existing cellar space rather than extending, you minimise waste and land use. Shield also uses modern, low-impact waterproofing materials where possible, making cellar tanking a more sustainable solution.

The Shield Tanking Process

Here’s how we typically carry out cellar tanking:

1. Professional Survey – a detailed inspection by our CSRT/CSSW-qualified surveyors.
2. Preparation – removing old plaster or finishes and repairing defects.
3. Application – applying tanking slurries, membranes, or coatings.
4. Curing – allowing the system to set and bond fully.
5. Finishing – preparing walls and floors for plastering, decoration, or fit-out.

This process ensures a dry, usable cellar that’s ready for whatever purpose you choose.

Why Choose Shield Waterproofing & Preservation?

• Over 30 years’ combined experience in damp proofing and waterproofing
• CSRT and CSSW qualified surveyors
• Approved installers of leading UK systems
• Nationwide coverage with local expertise
• Long-term insurance-backed guarantees

We’ve successfully tanked countless cellars, from period properties to modern homes, delivering results that last.

FAQs About Cellar Tanking

How long does Shield’s cellar tanking last?

Our systems are designed for decades of protection, with guarantees of up to 30 years depending on the method used.

Is tanking disruptive?

We minimise disruption, keeping works neat and efficient, and leave your cellar ready for finishing.

How much does it cost?

Costs depend on size, condition, and system used. Shield offers free, no-obligation surveys and quotes so you know exactly what to expect.

Conclusion: Protect Your Home with Shield

The benefits of cellar tanking are clear:

• Permanent protection against damp
• Safeguarding structural integrity
• Creation of valuable new living space
• Increased property value
• Healthier indoor air
• Long-term peace of mind

At Shield Waterproofing & Preservation Ltd, we’re proud to be trusted experts in cellar tanking and basement waterproofing across the UK. If you’d like to transform your cellar into a dry, usable, and valuable space, get in touch today.