It s not just a matter of dissolving the stain.
Gas fireplace soot on siding.
This soot not only mars the appearance of the fireplace but it also signals a potential health risk since soot almost always occurs in conjunction with carbon monoxide.
Some black spots on the house siding could be mold or just plan dirt.
Using incorrect propane gas components or orifices on your fireplace can cause propane gas to not burn properly resulting in black soot.
It is important to test the area with bleach to determine if the spots are in fact soot.
Almost sounds like it got heated into the pores or grain of the surface.
Customers who had to scrub the first time they used it wiped soot off easily on a subsequent cleaning.
Begin by spraying the foam cleaner onto your siding.
The sooting on your vinyl siding is generally caused by an incorrect air shutter setting on the burner tube.
This issue usually occurs on natural gas to propane gas conversions.
Take a clean white cloth and rub it on the ceramic gas logs in the fireplace and on fireplace doors if you have them.
I would take real soapy water from dish or laundry detergents and work the area making sure there are bubbles.
Your flames probably look a little orange have darker almost black tips on them.
Wait roughly 7 minutes then use your brush to spread it and scrub lightly.
If possible buy one specifically designed for your home s particular type of siding whether it is wood vinyl aluminum or something else.
It s designed to leave an invisible coat of silicon that makes future clean ups easier.
Also with a lot of cleaners and soaps bubble action is critical.
You are running rich.
It acts similar to a carburetor in that it controls the air to fuel ratio.
It s a top choice for wood fireplaces wood stoves and pellet stoves but it s not for gas stoves.
If you see thick black marks on the cloth you have a soot issue.
Mold dissipates when you use bleach however soot remains.
It is ok for vented logs logs to touch the flame and cause soot as this allows the closest look to a natural wood fire.
Gas fireplace makes soot streak on siding.
However generic foam cleaner will usually be enough to remove soot stains.
Ventless on the other hand the flame must not touch the logs and exact placement of the logs is imperitive.
Black soot can also result from a malfunctioning propane gas regulator.
Homeowners should always contact a professional when their gas fireplace begins to produce soot.