glass in front of pot bellied stove gone funny

Ghandee

Hi guys.


Little spots have started to appear on the glass of my stove.
The stove was only fitted in November, i don't burn anything in it other than turf, logs, coal (definitely recommended for stoves) and briquettes.

The spots are from the inside of the glass, can't really be washed off/removed, and are almost invisible to spot when looking head on at the glass, but are plainly visible from an angle or in certain light conditions.

Here is the glass looking at it head on.


At an angle.


You can see the spots in question clearly there.

And finally, pic of the glass caught in light:

Shows the true extent of the spots in that pic.

Admittedly, theyre only visible if you really go looking for them, but I can't help noticing them now that I know they are there. (and they weren't when we first got the stove)

Anyone any ideas what they are? Tips to remove them (rubbing with newspaper and ash not working), and lastly how to prevebt it happening again.

I cant help feeling that I should take the glass out of the front of the stove now, and bring it back to the shop we bought it from and ask them their advice.

Thanks

[mod]Moved as requested by the OP[/mod]