Triton approved contractor

Our Triton approved contractors offer a 10 year basement waterproofing guarantee

The quality of a cellar conversion relies on the quality of materials and workmanship, which is why the team here at Below Ground Interiors have worked hard to reach the required standards to become Triton approved contractors.


Triton waterproofing systems

We use Triton basement waterproofing systems because we know that they offer the very best results, and we’re fully trained in the use of all chemicals and equipment to ensure installation excellence.

10 Year Guarantee

Peace of mind with our insurance backed 10 year guarantee - Never worry about flooding or damp issues in your basement/cellar again.

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Your basement waterproofing guarantee

Triton 10 year, insurance backed

As a Triton approved contractor, we’re able to provide their 10 year insurance-backed basement waterproofing guarantee – your assurance that if the product fails, or we (somehow) cease to trade and something goes wrong, you’re covered!

BGI 10 year guarantee

As your chosen specialist, it’s important that you know you’re in a safe pair of hands – so we also offer our own Below Ground Interiors 10 year guarantee too. Double protection, and a show of our commitment to great workmanship.

Conversion 2nd fix guarantee

We don’t just offer a basement waterproofing guarantee... every customer that uses our cellar conversion services to create extra space in their home also gets a 12 month guarantee on all second fix work, issued by Below Ground Interiors.

Sump pump maintenance and servicing

Our guaranteed basement waterproofing work is carried out in accordance with British Standard 8102:2009. All materials, installation work and design services are always of the highest standard, but once your conversion is complete, you still need to ensure it remains watertight and damp-proof.

Over time, your sump pump may suffer from a natural build up of limescale and debris, which can clog mechanisms and leave the pump working below optimum performance – which can put your cellar conversion at risk of flooding.

We offer competitively priced sump pump maintenance and servicing package, where we’ll visit you on an annual basis - at your convenience - to check and service your pump and aqua channel.

By looking after your basement waterproofing system, it will, in turn, look after you, so regular servicing is as important as it is for your car! We’ll check and clean all equipment to ensure your system works as well as it can, for as long as it can.