u/BornStatistician4

Hi all, hoping for some advice from people with roofing/structural experience.

I’m in the process of buying a Victorian converted flat and just had a Level 3 survey done. The main concern flagged is the roof.

Key points from the survey:

  • Active leak into the reception room (visible ceiling staining)
  • Multiple missing/loose tiles
  • Significant “dishing” (sagging) to the front roof slope
  • Surveyor said the dishing is likely due to structural inadequacy, not just ageing
  • Possible cause is previous loft conversion / heavier concrete tiles without proper strengthening
  • Roof structure is concealed, so condition of timbers unknown
  • Advised to get structural engineer input before purchase
  • Surveyor has since clarified to me that:
    • This is likely a structural issue rather than maintenance
    • More substantial works may be required (removal of tiles, replacement of ridge board, adding structural timbers)

Additional context:

  • Property was surveyed in 2023 and that buyer withdrew
  • Issues appear not to have been fixed since
  • It’s a share of freehold, so roof costs would be shared with the other flat

Questions:

  1. How serious does “dishing due to structural inadequacy” usually turn out to be in practice?
  2. Does this typically mean partial rebuild/strengthening, or could it sometimes be less invasive?
  3. Rough ballpark, are we talking £10k, £20k, £30k+ type territory?
  4. Is it common for loft conversions to cause this kind of issue if not done properly?
  5. Would you walk away, or proceed with a structural engineer first?

Really appreciate any input, trying to understand whether this is a manageable project or a bigger red flag.

https://preview.redd.it/8qvx79u2o3zg1.png?width=603&format=png&auto=webp&s=d3a9e1d5e29d0b5bed88248533088b8d814e846f

https://preview.redd.it/tlw1ksl4o3zg1.png?width=594&format=png&auto=webp&s=4073a7a25994a34ac9d748f7beb27c9eaf5020e8

https://preview.redd.it/j0iw92c9o3zg1.png?width=611&format=png&auto=webp&s=d637dccdaeffef5ef6612eb2fc57247aacc7b2f9

https://preview.redd.it/cjovga6co3zg1.png?width=618&format=png&auto=webp&s=fe644279e57ee4ff4e921df4ba18157cc0211582

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u/BornStatistician4 — 10 days ago