Roof Repairs › Caerphilly › Chimney Flashing Repairs
This page is about chimney flashing repairs here specifically — what the fault looks like on slate below and concrete tile above, why it happens in this part of South Wales, and what putting it right actually involves.
Call 07868 857692 to arrange an assessment in Caerphilly, or message us on WhatsApp.
Stack Junctions on Caerphilly Roofs
Where a chimney passes through a roof there are four separate weatherings doing four separate jobs, and on the covering on the upper estates they are an apron at the front, step flashings and soakers up the sides, and a back gutter behind. On slate below and concrete tile above all four are the same age as the roof. On the covering on the upper estates a leak near a chimney is far more likely to be one of those four than the stack itself.
What This Covers
- Chimney leaks
- Failed flashing
- Water around chimney stacks
- Water ingress connected with the affected detail
- Localised weathering or damage requiring repair
The Back Gutter
The back gutter behind the stack is the detail that fails most, because it collects everything exposure that changes with height sends down the slope above it. With wind on the mountain-side streets that is a great deal of water arriving in a small tray, and on slate below and concrete tile above it is also where leaves and moss collect and sit.
Why It Is Awkward
A stack junction sits mid-slope with a vertical obstruction in the middle of it, so with access steep above the town centre it usually needs a scaffold rather than a ladder to be worked on properly. Because exposure changes end to end on the same street, doing the flashing and any stack repointing in one visit saves the access cost twice.
What a Proper Job Looks Like
Step flashings chased individually into the bed joints, soakers interleaved with the covering, an apron at the front and a properly formed back gutter — on the covering on the upper estates that is the whole detail and nothing less weathers a stack. A continuous strip of lead run round the stack and sealed with mastic is what we are usually removing, and with exposure that changes with height it buys about a winter.
What Our Chimney Flashing Repairs Service Includes in Caerphilly
- Step flashings chased individually into the bed joints
- Soakers interleaved with slates or tiles
- Front aprons and properly formed back gutters
- Correct lead codes with movement allowed for
- Previous mastic and tape repairs cut out
- Stack pointing and flaunching checked at the same time
Related Roof Repairs in Caerphilly
Chimney Flashing Repairs in Caerphilly — Common Questions
What are common signs that I may need chimney flashing repairs in Caerphilly?
Where a chimney passes through a roof there are four separate weatherings doing four separate jobs, and on slate below and concrete tile above they are an apron at the front, step flashings and soakers up the sides, and a back gutter behind. With wind on the mountain-side streets that is a great deal of water arriving in a small tray, and on the covering on the upper estates it is also where leaves and moss collect and sit.
Can a small defect cause an internal leak?
Yes. The kind of defect behind chimney flashing repairs lets water into the structure on slate below and concrete tile above, and it can travel a long way before it shows on a ceiling. That is why the source of a chimney flashing repairs problem is traced rather than guessed at from the mark inside.
Will the whole roof need replacing?
Usually not. Chimney flashing repairs is repair work, and on the covering on the upper estates the covering around the defect is generally sound — whether a repair is the right answer depends on how far the deterioration has gone beyond the part you can see.
Can you inspect the problem before recommending work?
Yes, always. Given exposure changes end to end on the same street, a chimney flashing repairs job on slate below and concrete tile above is looked at before anything is recommended, and you get told what was actually found rather than a figure guessed from the pavement.
Do you cover other roof repairs in Caerphilly?
Yes — chimney flashing repairs is one of twenty-five roof repairs we carry out on the covering on the upper estates, and across the surrounding area including Bedwas, Llanbradach, Abertridwr, Senghenydd and Nelson.
Do you cover Caerphilly and the surrounding area?
Yes — chimney flashing repairs throughout Caerphilly and the places around it, including Bedwas, Llanbradach, Abertridwr, Senghenydd and Nelson.
What does a repair like this cost?
Two things set the figure for chimney flashing repairs: how far the defect has actually gone, which needs somebody to look at it, and the access. With access here sharply different from one end of a street to the other, that second one moves the price of chimney flashing repairs more than the materials do, and it is why a figure over the phone is a guess.
Can you look at other things while you are there?
Yes, and it is worth it — given exposure changes end to end on the same street, safe access to the roof is most of what a visit costs, so anything else wanting attention is far cheaper dealt with on the same day as the chimney flashing repairs.
Contact T&T Roofing About Chimney Flashing Repairs in Caerphilly
We carry out chimney flashing repairs across Caerphilly and the area around it including Bedwas, Llanbradach, Abertridwr, Senghenydd and Nelson. For chimney flashing repairs, a photograph of the affected part of the roof and a short description of what it is doing is the quickest start — given exposure changes end to end on the same street, those two are what make a figure accurate rather than provisional.
Tell us what the roof is doing in Caerphilly and we will look at it. Call 07868 857692, message us on WhatsApp or use the form below.