About us
NACS-registered. Fully insured. Properly trained, properly equipped, properly tidy — across the North East.
Our approach
"Every chimney we sweep, we treat like our own. Properly certified, properly insured, properly explained — and finished without a speck of soot on the carpet."
An annual sweep is one of the simplest things a homeowner can do to keep a family safe. Too many sweeps leave behind dust, missing certificates, or a vague “you’ll be fine til next year.” We started Black Diamond to do it properly.
Every visit ends with three things: a clean chimney, a written safety certificate, and a hearth that looks untouched.
NACS-registered, fully insured. Modern rotary equipment, HEPA-sealed vacuum, dust sheets on every floor. Most sweeps take 45–60 minutes — certificate emailed before we leave.
If something needs attention — worn rope, cracked liner, struggling draw — we’ll show you, photograph it, and explain your options plainly. No upsell.
Christoff Berlage · NACS-registered sweep
NACS-certified · Certificate emailed same day
Credentials
Every sweep on the team is registered, certificated, and continually trained.
The UK’s leading trade body for professional sweeps. Annual reassessment, ongoing training, certificates every insurer accepts.
Comprehensive cover from a UK-regulated insurer. Your home, your contents, fully protected on every visit.
Modern rotary equipment, HEPA extraction, smoke-test certified. NACS best-practice, every job.
What we believe
Dust sheets down, vacuum sealed, boots off. The hearth looks untouched.
If a chimney needs relining or a stove needs retiring, we’ll say so. No upsell, no scare tactics.
Photos, certificates, condition notes — emailed before we leave.
Shoes off. Mugs unmoved. Pets considered. You’re hosting; we’re guests.
Two-hour windows. A text when we’re on our way. If we’re late, you know first.
Quote before we start. If we find something serious, we stop and ask.
