The kitchen around the tiles are all gray, near the water heater in the dark gray, why ah, is the reason why the gas barrier?
The original home is not the case, and today suddenly found a piece of gray, will there be any security risks ah
Even if the ash is too much of your water heater is also a problem, because the gas is not burned out of this situation, you look at the water heater there is no damper, and some words can be transferred. If not so can only use this barely
Water heater is normal, that is near the gray, too much gray so black, not burning black
If the water heater is very dark, it may burn something inside the water heater, and there is a big security risk or for a bar.
