On 30/04/2021 10:13, R D S wrote:
The ceiling and wall/ceiling corner above our boiler is slightly grey
having got that way over some years from previously 'is the ceiling a
bit grey there' to now 'it definitely is, yes'.

There's no CO2, there are 2 detectors in there.

I suppose the sensible answer is get someone in? Or is this normal to
some degree?

Sound like dirt deposited from convection currents to me. Time for some
paint.

In article ,
newshound wrote:
On 30/04/2021 10:13, R D S wrote:
The ceiling and wall/ceiling corner above our boiler is slightly grey
having got that way over some years from previously 'is the ceiling a
bit grey there' to now 'it definitely is, yes'.

There's no CO2, there are 2 detectors in there.

I suppose the sensible answer is get someone in? Or is this normal to
some degree?

Sound like dirt deposited from convection currents to me. Time for some
paint.

wash it down with sugar soap.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 30/04/2021 11:16, newshound wrote:
On 30/04/2021 10:13, R D S wrote:
The ceiling and wall/ceiling corner above our boiler is slightly grey
having got that way over some years from previously 'is the ceiling a
bit grey there' to now 'it definitely is, yes'.

There's no CO2, there are 2 detectors in there.

I suppose the sensible answer is get someone in? Or is this normal to
some degree?

Sound like dirt deposited from convection currents to me. Time for some
paint.
+1


--
€œThe fundamental cause of the trouble in the modern world today is that
the stupid are cocksure while the intelligent are full of doubt."

- Bertrand Russell