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Chimney Flashing Repairs — St. Mellons

Chimney Flashing Repairs in St. Mellons

Predominantly post-war and late-twentieth-century estate housing under concrete interlocking tile, on the flat eastern edge of Cardiff, with a small older village core.

Roof RepairsSt. Mellons › Chimney Flashing Repairs

This page is about chimney flashing repairs here specifically — what the fault looks like on these late-twentieth-century estate roofs, why it happens in this part of South Wales, and what putting it right actually involves.

Call 07868 857692 to arrange an assessment in St. Mellons, or message us on WhatsApp.

Stack Junctions on St. Mellons Roofs

New lead flashing dressed around a brick chimney stack
New lead flashing dressed around a brick chimney stack.

Where a chimney passes through a roof there are four separate weatherings doing four separate jobs, and on a uniform interlocking tile covering they are an apron at the front, step flashings and soakers up the sides, and a back gutter behind. On these late-twentieth-century estate roofs all four are the same age as the roof. On a uniform interlocking tile covering 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 persistent damp off the levels sends down the slope above it. With low-lying, sheltered conditions that is a great deal of water arriving in a small tray, and on these late-twentieth-century estate roofs it is also where leaves and moss collect and sit.

Why It Is Awkward

Chimney Flashing Repairs under way on a St. Mellons roof
Chimney Flashing Repairs under way on a St. Mellons roof.

A stack junction sits mid-slope with a vertical obstruction in the middle of it, so with access flat, with driveways and room almost everywhere it usually needs a scaffold rather than a ladder to be worked on properly. Because the same failures repeat across whole streets, 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 a uniform interlocking tile covering 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 persistent damp off the levels it buys about a winter.

What Our Chimney Flashing Repairs Service Includes in St. Mellons

  • 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
Chimney Flashing Repairs in St. Mellons by T&T RoofingA completed chimney flashing repairs job in St. MellonsNew lead flashing dressed around a brick chimney stackChimney Flashing Repairs under way on a St. Mellons roof

Related Roof Repairs in St. Mellons

Chimney Flashing Repairs in St. Mellons — Common Questions

What are common signs that I may need chimney flashing repairs in St. Mellons?

Where a chimney passes through a roof there are four separate weatherings doing four separate jobs, and on these late-twentieth-century estate roofs they are an apron at the front, step flashings and soakers up the sides, and a back gutter behind. With low-lying, sheltered conditions that is a great deal of water arriving in a small tray, and on a uniform interlocking tile covering 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 these late-twentieth-century estate roofs, 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 a uniform interlocking tile covering 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 the same failures repeat across whole streets, a chimney flashing repairs job on these late-twentieth-century estate roofs 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 St. Mellons?

Yes — chimney flashing repairs is one of twenty-five roof repairs we carry out on a uniform interlocking tile covering, and across the surrounding area including Old St Mellons, Rumney, Trowbridge, Pontprennau and Marshfield.

Do you cover St. Mellons and the surrounding area?

Yes — chimney flashing repairs throughout St. Mellons and the places around it, including Old St Mellons, Rumney, Trowbridge, Pontprennau and Marshfield.

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 as easy as it gets on this list, 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 the same failures repeat across whole streets, 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 St. Mellons

We carry out chimney flashing repairs across St. Mellons and the area around it including Old St Mellons, Rumney, Trowbridge, Pontprennau and Marshfield. 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 the same failures repeat across whole streets, those two are what make a figure accurate rather than provisional.

Free quotations

Tell us what the roof is doing in St. Mellons and we will look at it. Call 07868 857692, message us on WhatsApp or use the form below.