Algae on rubber window housing

[Wino]

Whilst sat at Meadowhell on chauffeuring duties I was cleaning the inside of the car and noticed the light green algae on the rubber strip. It seems powdery and I did try to wipe it off with some glass cleaner but its refused to budge. It's more apparent towards the wing mirror has anyone else noticed similar ? 

 

[alexp999]

Mine is exactly the same

[Wino]

Ahh so not just mine then. Looking at the passenger side rubber housing and it's all the way along the rubber strip. More noticable when the window is fully down.

[TomsFocus]

Same on my Golf too.  More prominent on the North facing side.

[pragmatix]

It's common an most cars .

[Wino]

Never noticed it on any other car I've owned.

Perhaps I'm spending too much time cleaning the car 🤔

[Tizer]

I blame the Greens, When we were burning lots of coal there was that much sulphur in the air it killed that sort of stuff off. 

[Marty...]

Maybe.. far.. far in the future the algae will 'power' the vehicle....

 

[billyboy]

It's definitely worse this year due to the damp Winter, I always keep a stiff bristled toothbrush in my cleaning kit and brush it with window cleaner or if it's very dry I just brush it and follow with a vacuum cleaner at the same time.

[Kenny_stline]

Had it all over mine when I bought my fez a few months ago, I used bare bones and a hard bristle brush, I clean the car weekly and has not come back yet 

[StephenFord]

It comes off easily if you use any brand waterless wash & wax! My car lives under trees so it's a regular bit of maintenance for me.