Flue Deposits

[twinaxel]

Been called in to decorate some rooms at an OAP home
one of the bedrooms has a internal flue for the heating boilers, which appears to be of brick and plaster construction.

Some time in the past a stud wall has been fitted to create a bathroom one end of the stud is fitted to this flue.

Raking out a crack between the stud and wall has brought
out a fair amount of black brownish dust some it is small
lumps looking at closely it seems to have been subject to great heat.

Before I take this any further I am correct in thinking this dust is from a leaking flue.

 

[oilman]

It's possible, but since we're not there to see it, how could we tell?

 

[bengasman]

as this could be potentially lethal, call in an RGI to check.
as you have "created" the opening, it could be argued you are responsible, so i would not leave it to the old dear to call.

 

[twinaxel]

what I did not make clear this is an OAP residential home
the room I am working in is empty.

 

[bengasman]

does make a slight difference, wait til monday