Not sure if there’s a correct sub for this so I’ll ask here. What’s this grey rubble stuff falling from my roof into my loft? It falls off somewhat regularly in small amounts. If I drop something in the loft a large amount will fall down. Should I be worried?

by Twiglet91

8 comments
  1. In the days before roofing felt, torching or lime mortar was used on the underside of tiles or slates to keep them in place and to prevent strong winds from getting under the tiles and lifting them. The torching on clay tile roofs contributed to securing them in the days before nibs were added to hold them on the wooden battens.

  2. Bits of slate and other debris.

    It’s either

    a) left over from when the roof was last redone
    b) falling off the roof slowly over time because you’re missing some membrane between the tiles and loft

  3. It’s not easy to tell from the photo, but I’m wondering if it’s cinders? My 50s flat has it as an insulating/ fireproof layer between floors. Which made having the kitchen ceiling replaced a super fun experience. 

  4. We could do with a pic of where it’s falling from/ above to try and see- without that you’re going to get educated guesses.

  5. You might have Burrowers, they are on the prowl this time of year.

    Stay safe, shared in Grimsby x

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