17/06/2026
Just got your CCTV drain survey report back and it looks like it's written in code? You're not alone - most homeowners in Bexleyheath have no idea what those grades and letters actually mean.
Here's the quick guide: Grades run from 1 to 5. Grades 1-2? Just observations - monitor them, but nothing urgent. Grade 3 means sort it in the next 6-12 months. Grades 4-5? That's a structural defect needing prompt attention, and it's usually what triggers a repair quote.
Those letter codes? RR means roots have invaded your pipes. DI is a displaced joint. CC is a crack. OB is an obstruction. The 'observations' section often mentions surface water or minor debris - that's not structural, so don't panic.
At DTD Drainage, we walk every customer through their report in plain English. We'll tell you what's urgent, what can wait, and what you can ignore. No jargon, no upselling - just honest advice from a local family business that's been serving DA6, DA7 and Kent for years.
📞 07949 593511
https://www.dtddrainage.co.uk/
📍 Serving Bexleyheath, Kent & surrounding areas