Chimney Repairs South Wales › Aberdare › Guide
Walk along almost any Victorian or Edwardian terrace in Aberdare, Trecynon or Aberaman and you will see chimneys straddling the party wall. Each one sits over two houses, so a repair affects both roofs. Here is how we deal with that in practice, step by step.
Why shared stacks are common here
The terraces were built in long rows, and builders put the flues from neighbouring houses side by side in a single stack, sitting on the party wall. It saved brick and gave each room its own fire. The result is a tall shaft that belongs, in practical terms, to both houses. When it fails, neither side can fix it properly without the other roof being involved, which is why shared stacks are often left longer than they should be.
What we look at first
We check the stack from the street and the loft on your side, looking at lean, pot condition, flaunching and any damp on the breast. We also look at how the stack meets the party wall, since movement there can affect both houses. Please do not climb up to look. If you can see a lean or loose bricks from the ground, call us for a proper look and we will tell you what we find.
- Whether the whole stack leans or just one flue
- Condition of the pots, cowls and capping
- Damp marks on both sides of the party wall in the loft
- How the stack sits on the party wall below
How the repair is carried out
Work is done from a tower or scaffold that covers the full width of the stack. We then repair or rebuild it as a single structure, including both sets of pots and a shared flaunching, so that one side is not left weaker than the other.
If one flue is in use and the other is not, the unused flue can be capped and ventilated while the live one is kept working. Any working appliance flue is for a suitably qualified installer to check, as we repair the stack and do not certify appliances.
Speaking to the neighbours
We will contact the neighbour about access, timing and the scaffold, and explain what we are doing and why. Most neighbours are glad to see a worn stack dealt with, since it is just as much of a risk to them as it is to you.
Who pays for a shared stack, and in what proportion, is for the owners to agree between you. We cannot give legal advice, but we can provide a clear written quotation that you can show your neighbour so everyone knows what is being proposed.
What to ask before you book
Ask whether the quotation covers the whole stack or only your side, and how the work will be split if the neighbour is not ready to go ahead. Ask who arranges access across the other roof, and whether scaffold is included in the price. A shared stack cannot safely be repaired by half, so we advise on the sensible scope of work once we have seen it. Free, no-obligation quotations are standard, and we are fully insured for the work.
Need a chimney looked at in Aberdare? See chimney repairs in Aberdare, or for the lead and mortar side of it, chimney flashing repairs and chimney repointing and repairs.
More Chimney Guides for Aberdare
Common Questions
Can you repair only my half of a shared stack?
Usually not for anything beyond pots or minor pointing. The brickwork is one structure, so a rebuild needs to cover both sides. We can quote for the whole stack and for your side separately, and explain the difference between them.
Who pays for a shared chimney stack?
That is for the owners to agree between you, and we cannot give legal advice on it. We provide a clear quotation for the whole stack that you can both look at, and we are happy to talk to your neighbour about access.
What if my neighbour will not allow access?
We start by talking to them directly, and most agree once they understand the problem. If they do not, we can look at what can be done from your own roof. Disputes between neighbours are a legal matter we cannot advise on.
Get a Chimney Looked At in Aberdare
Tell us what the roof is doing in Aberdare and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.