Ely Roofers carry out chimney take-downs in Bar Hill, helping homeowners choose the right materials and finish for a weathertight, tidy result.
Removing a redundant chimney stack is not just about getting the brickwork down. Once the stack is gone, you have choices to make about how the roof is finished and how the flue is sealed below. The materials you choose affect how the job looks, how long the finish lasts, and what it costs. This page sets out the main options honestly, so you can make an informed decision when you talk to us.
We carry out chimney take-downs across Bar Hill and the wider area around Ely, and the questions about materials and finishes come up every time. There is no single right answer - it depends on your roof type, the age of your property, your budget and how the result needs to look.
Whatever materials are used, the basic scope of a chimney take-down is the same. The stack is removed down to just below the roofline, course by course. The flue is capped and sealed. The roof covering is reinstated over the void left by the stack base. Flashings are stripped and the area made weathertight.
The two areas where material choice makes a real difference are: the roof covering reinstatement (tiles, slates or felt) and the flue cap or internal seal. We will deal with each in turn.
The most straightforward approach on a tiled or slated roof is to cut in new tiles or slates to match what is already there. The opening left by the removed stack is filled in with the same material as the surrounding roof, so the result is as close to invisible as possible.
Pros: Neat appearance. The repair blends into the existing roof rather than drawing attention to itself. The same fixing method and fall as the surrounding tiles means water runs off cleanly.
Cons: Finding a close match to older or discontinued tiles can be difficult. Some concrete interlocking tiles from the 1970s and 1980s are no longer made in the same profile, so a perfect match is not always possible. Natural Welsh slate varies in colour and texture between quarries and between batches, so new slates alongside old ones may be a slightly different shade for a year or two until weathering evens them out.
Typical cost for tile reinstatement on a standard single-stack removal: this forms part of the overall take-down price, which for a straightforward single chimney stack typically runs from around £800 to £1,500 depending on stack height, access and the extent of the roof reinstatement needed.
Where a new section of roof meets a wall or parapet, lead flashing is the standard weatherproofing detail. On a chimney take-down there should be no new exposed abutment once the stack is gone - the goal is to patch the roof covering so that no flashing is needed at all. However, if the roof geometry means a small upstand is unavoidable, lead remains the correct material.
Pros: Lead is proven over centuries on British roofs. Correctly dressed and secured, it is extremely durable. It is also malleable enough to be worked into irregular profiles around existing tiles.
Cons: Lead is expensive, particularly with current metal prices. It can be stolen. On a south-facing roof it expands and contracts significantly with temperature changes, so the joints and fixings must be done correctly to avoid cracking over time.
Alternative - lead-effect aluminium or lead-free flashing tape: Some roofers use aluminium flashing or self-adhesive flashing tape as a cheaper substitute. Tape products can work on simple details but they are not a like-for-like replacement for dressed lead on a permanent repair. For a chimney take-down where the goal is a long-lasting weathertight finish, proper lead work is the right choice for any flashing that remains.
Where new tiles or slates are cut in, the underlay beneath them should be checked and lapped correctly. Modern breathable membrane performs better in the long run than traditional bitumen felt, which becomes brittle with age and can crack. If the surrounding underlay is already in poor condition, it is worth replacing it in the immediate area while the tiles are off.
Pros of breathable membrane: Allows moisture vapour to escape from the roof structure, reducing the risk of condensation build-up in the roof space. Does not become brittle in the same way as older felt.
Cons: Marginally higher material cost than basic felt. Not usually a significant addition to the overall job price.
Once the stack is down to roof level, the flue opening at the top must be closed off. There are two main approaches.
The flue is capped with a course of brickwork, haunched with mortar and finished to shed water. This is the most common approach when the stack is being taken down completely to or below the roof deck.
Pros: Solid and permanent. No separate fittings to fail. Integrates with the brickwork rather than sitting on top of it.
Cons: Needs to be done carefully or water can sit on the mortar haunch rather than draining off. The mortar finish should be rounded and sloped, not flat.
If the chimney breast is being retained internally (which is almost always the case - we remove only the external stack above the roofline), the flue should be ventilated slightly to prevent damp building up inside the breast. A simple airbrick or proprietary chimney balloon can be used in the fireplace opening below. This is not a structural decision but it does affect long-term dampness inside the breast, so it is worth discussing.
Before accepting a quote for a chimney take-down, ask specifically:
A roofer who can answer these questions clearly and specifically before starting work is more likely to deliver a finish that holds up over time.
We carry out chimney take-downs in Bar Hill and the surrounding area. If you have a redundant stack you want removed and you want a clear explanation of what materials will be used and why, call us to arrange a roof survey. We will look at the stack, explain the options that apply to your specific roof type and give you a price based on what we actually find.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
