When an unused chimney stack in Watton needs to come down, the choices you make about how the roof is made good afterwards will affect your home for decades - so it's worth understanding the options before the work starts.
The first choice is how much of the stack is removed. There are two main options and the right one depends on the condition of the chimney and what's practical for your roof.
Taken down to below the roofline. The whole visible stack is removed to just beneath the tiles or slates. The roof surface is then made good and the area is weathertight with no protrusion above. This is the most thorough option - it eliminates all ongoing maintenance, removes the flashing, and means there's no brickwork left above the roof to deteriorate. Most homeowners with an unused chimney choose this route.
Taken down to the roofline only. The stack is reduced to the level of the roof covering rather than going further into the roof space. This is sometimes done where there's a chimney breast that the homeowner wants to keep inside the property. It's less common and still leaves a small section of brickwork that needs to be capped and maintained, though far less so than the original stack.
Once the stack is down, the hole in the roof needs to be filled properly. What gets used to make it good depends on what the existing roof is covered with. Here's an honest breakdown of each situation:
Many pitched roofs are covered with either concrete interlocking tiles or traditional clay plain tiles. When the stack is removed, the existing tiles are lifted around the opening, battens and felt are repaired or replaced in the affected area, and matching tiles are relaid to close the gap.
The main consideration here is matching. Old clay tiles vary in colour and weathering, and a perfect match is not always possible. On a rear roof slope this rarely matters. On a front elevation, if the existing tiles are an older handmade or discontinued profile, finding an exact match takes more effort. A good roofer will source the closest available match and, where necessary, use salvaged tiles from a less visible part of the same roof.
Older properties sometimes have natural slate roofs. Welsh slate is still available new, but it's expensive, and salvaged slate is often sourced instead. The quality of salvaged slate varies - some second-hand slate is excellent, some is already near the end of its life.
If the existing roof is covered with artificial slate, matching is usually straightforward as most profiles are still in production. These slates are consistent in colour and thickness, which makes the repair look clean.
Whatever the surface covering, a chimney take-down is an opportunity to check the roofing felt and battens in the surrounding area. Older felt can be brittle and split. Battens can be rotten, particularly near a chimney where moisture has been tracking for years. If the felt and battens directly around the opening are deteriorated, replacing them as part of the job is far more cost-effective than having to lift the tiles again later.
Ask your roofer whether they plan to inspect and replace felt and battens in the affected area, not just relay the tiles.
When a chimney comes down, the lead flashing that sealed it to the roof is no longer needed. The lead itself has value and most roofers will take it away as part of the job. If there is a significant amount of lead on a large stack, it's reasonable to ask whether the value of the lead has been factored into the price.
No new flashing is needed once the stack is fully removed and the roof is made good with tiles or slates.
Once the external stack is gone, the flue opening in the roof space needs to be sealed. If this isn't done properly, the open flue becomes a route for birds, bats, cold air and moisture into the roof space. The most common approach is to cap the remaining flue with a concrete or mortar cap at or just below roofline level. Inside the roof space, an additional board or block can be fitted over the top of the chimney breast.
Ask specifically about this step. It's easy to overlook and the consequences of leaving an open flue into the roof space are straightforward: damp, draughts and wildlife ingress.
A full chimney take-down generates a significant amount of rubble. A standard stack on a two-storey house can produce half a tonne or more of brickwork. When you get a quote, confirm that waste removal and disposal are included. If they're not, you'll need to arrange skip hire separately, which adds cost and inconvenience.
Before committing to any roofer for a chimney take-down in Watton, it's worth asking:
Good answers to these questions tell you a lot about whether the roofer is planning a proper job or a quick one.
Call Norwich Roofers to arrange a chimney survey and quote. Ask for a survey that looks at the stack, the existing roof covering and the condition of the area around it, and for a clear price.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
