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Is it capped at the top?
feels almost like earth/dirt with little pebbles in it
Where did it come from? Inside? This might be the stuff that was used to 'seal' the chimney. It's that crazy stuff with horse hair in it. Older chimneys would have been just brickwork, later would have had a layer of something to better prevent gases from exiting through the brickwork and in to the building.
edit: called pargetting, a rough coat of lime mortar
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Was it properly ventiliated before? Even if it has a peppperpot type vent cap on the top of the stack it'll need a reasonable size vent in the plaster, I think as close to the floor as poss (sitting just above skirting is a good place?). We're doing up a flat that had that problem, sweaty chim from two 'fake' vents been screwed onto front of plasterboard.
Plasterboard was also mounted direct onto exterior stone and then layer upon layer of it built up to finished room heigh, total disaster. Took it apart and did it properly in September and was dusty dry until last week, mental wrong way wind and driving rain has either dislodged the pots, or exposed a slightly weak bit of flaunching/haunching (?) so started absolutely pissing in. Another job for the poor roof guy :p Thankfully rest of it is fine, an easy job for someone that knows what they are doing and has a big lift machine.
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Howard
BrickMan
@hvsds
got damp plaster from the chimney..? just add another layer on top!
hopefully opening it up and filling the two bags in the photo with the soot and earth that was in the hole will help things considerably.
in the other photo is some plaster that has blown (which we’ve then given a hand) - feels almost like earth/dirt with little pebbles in it - any idea if this stuff can go in regular skips unlike gypsum plasterboard waste?
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