Covering Covering all Bucks and Herts


Graham Warner Ltd specialises in all cellar and basement tanking, whether it's storage, living accommodation, office space or a workshop. Our cellar conversion services are second to none, and enjoyed by domestic and commercial customers alike.

Cellar & basement tanking in Bucks & Herts

With basement conversion, we can add value to your property and increase your living or working space. We're able to turn any cellar into a waterproof, habitable space. We can also guarantee our basement conversions plus we guarantee our cellar convertion for 10 years.

Creating safe, habitable rooms

Every basement conversion we perform, we commit ourselves to the highest standard of work. For value for money and a quality conversion job, call our team today on 01296 733 923.

Attention to detail every time

For cellar and basement tanking in Bucks and Herts,

call today on:

01296 733 923


07768 180 988