6 Best Chimney Sweeps in Cambridge: Local Pros Compared

Open fires and wood burners used regularly should be swept at least once a year, ideally before the heating season starts. If you use an open fire or stove heavily, sweep more often, every few months during winter months. Unused chimneys can be swept less frequently, but annual sweeping is still wise to check for blockages and damage.

A CCTV inspection lets you see inside the flue on a screen. It reveals tar buildup, cracks in the lining, loose mortar, bird nests, debris, and structural damage that a basic sweep might miss. The camera footage helps sweeps and engineers advise on repairs needed, so you know exactly what work is worth doing.

A sweep cleans the flue and checks it's clear. An engineer or surveyor inspects for structural damage and safety and can carry out repairs or fit new liners. Many sweeps work with engineers or do both roles themselves, so ask what's included when you book.

Bird nests in active use are protected by law and cannot be removed between March and August. Outside that window, a sweep can usually remove nests. If you find one during spring or summer, wait until late August, then have a bird guard or cowl fitted to prevent the same problem next year.

If you're renting or claim on home insurance, your landlord or insurer may ask for a sweeping certificate as proof the chimney is clean and safe. Most sweeps issue one after a job. Check your tenancy agreement or insurance terms to confirm whether you need one.

Poor draw usually means a blockage, soot, debris, a bird nest or a collapsed section of flue. A sweep can clear it if it's soot. If a CCTV inspection shows structural damage or a collapsed flue, you'll need repair work, which may involve fitting a new liner. A smoke test (£40 to £75) can help confirm the problem.