Basement Conversions

Converting your basement into a new room, looking to maximise your home’s footprint or building a subterranean house? Basements and Cellars are both a great use of space and set to become increasingly popular as land and house prices continue to rise.

Waterproofing Your Basement

Creating a liveable area underground is not a straightforward process and involves thoroughly waterproofing the walls and floors to protect them from water entering the property. Even if you’ve always had a dry home, things can change, perhaps in periods of heavy rainfall, flooding, faulty rainwater goods, a neighbouring basement flooding or even a burst water main.

We’ve worked closely with the National House Building Council (NHBC) to rectify failed basement waterproofing projects. While it’s great that we can remedy faults, getting our expertise on board at the design stage puts your project in safe hands from day one. And providing valuable educational demonstrations, including installing a damp-proof membrane to fix a leaky roof at no additional expense.

How Can We Help You

Watertight Guarantees

Guardian offer a 10 year Guarantee for our workmanship. Everything we do is built to endure, but if the worst should happen, we offer a 10-year insurance-backed guarantee.

Design Liability

We are design experts in our industry, following British Standards for waterproofing BS102-2022, which means we can take on the liability of our design work.

Cost Savings

Maintaining a watertight property can significantly enhance its market value and appeal to potential buyers or tenants.


Guardian have been offering their expertise to clients for over 45 years and have experience with clients across the South West and UK.

Specialist Surveys

Expert advice providing 100% accurate and impartial advice, a full and honest appraisal of your property and a diagnosis for what is causing the problem.

Peace of Mind

Our award-winning advice and service, means you and your property are in safe hands. We are committed to doing the job right every time.

Residential Projects

Why People Love Us

Not sure which solution is best for you?

Uncertain about the right waterproofing solution? At Guardian Waterproofing, our experts guide you to the best choice tailored for your property, ensuring optimal protection.