Basement waterproofing contractors and cellar conversion specialists, Leeds & Harrogate

Our history

Below Ground Interiors bring you a highly experienced team of qualified and competent basement waterproofing contractors and cellar conversion specialists, offering a comprehensive range of services for your convenience – serving Leeds, Bradford, Harrogate and local areas.

Established in 2013, owner Paul Watson has decades of knowledge across cellar conversions, dry lining, basement tanking, structural waterproofing and office fit-outs, and has worked on many projects for international commercial clients.

Now with a core team of 6 level 3 CSCS qualified installation experts and engineers, plus a supporting network of other specialist contractors, BGI can take care of any basement waterproofing or conversion projects no matter the size, scope or complexity.

About Below Ground Interiors

Our Team

Meet the cellar waterproofing and conversion contractors who’ll be assisting you during the design and installation process...

Paul Watson

Paul Watson

Owner - CSCS level 3 gold card in site joinery

Biggy

Biggy

CSCS level 3 gold card partitioning and specialized ceilings bulk heads

Ash

Ash

CSCS level 3 gold card portioning and specialised ceilings bulk heads

Rhys

Rhys

CSCS level 3 gold card plumbing and heating

Lurch

Lurch

CSCS level 3 gold card electrician

Neathan

Neathan

CSCS blue card labourer/structural water proofing installer

Rob

Rob

Apprentice trained plasterer specialising in curved walls and vaulted ceilings

13000
Square Feet Waterproofed
200
Happy Clients
6
Current Projects
10
Years Guarantee

Why choose us?

If you’re looking for a trustworthy and transparent waterproofing and conversion specialist, you’ve come to the right place – and here are a few more reasons to choose us...

Our basement waterproofing contractors have all undergone extensive training with Triton Chemicals, a leading supplier of superior standard waterproofing materials – making us an approved contractor and genuine specialist.

Our contractors also offer a friendly and professional service at all times, keeping noise, mess and disruption to an absolute minimum.

Because of our approved contractor status for Triton waterproofing systems, we’re able to offer their 10 year insurance backed guarantee on all structural and cellar waterproofing work, alongside our own 10 year guarantee.

All second fix work for your cellar conversions will be backed by a 12 month guaranteed issued by Below Ground Interiors.

Sometimes cellar conversions can fail, due to poor initial waterproofing, subsidence or underground vibrations caused by heavy traffic, trains etc. We’re experts in identifying the problem and designing a repair solution in these cases.

So if you need help to repair a failed basement conversion, we’ll be happy to help you restore your cellar into a dry, functional room once more.

We offer an end-to-end service, from initial concept designs, to waterproofing and 2nd fix, creating a completely bespoke cellar conversion, tailored to your specific needs – we’ll make the best use of the space for your budget.

If you’re looking for something a little different, we can also create beautiful spiral wine cellars or convert your cellar for any purpose.

Safe, compliant cellar conversions

Our contractors never cut corners, and all waterproofing and conversion work is completed to the highest possible quality, complying with all health and safety regulations and delivered at a competitive price.

You’ll receive an official report from an independent CSSW surveyor to ensure any work undertaken by our cellar conversion specialists and basement waterproofing contractors is designed and completed to the highest standards.