Lichen on fibreglass roof

[canuckrv]

My new to me Roadtrek 190 had a serious issue with lichen on the roof I managed to powerwash it off, but there is still some brown staining on the fibreglass. What is the best way to remove this before buffing and waxing?

 

[SpencerPJ]

Bleach ?

 

[SeilerBird]

Wait, you are going to buff and wax the roof?

 

[canuckrv]

Yes some of us take care of their RV's

 

[Ksouers]

I’ve used ammonia and a blue scotch brite (non scratching) scrubber.
Also, the ZEP concentrated house siding cleaner (full strength) works pretty well.

Kevin

 

[canuckrv]

I might try the ammonia shying away for the bleach as I don't want to cause more damage.

 

[Ksouers]

I should mention I used the sudsy variety of ammonia. Don’t know if the plain stuff will work but surmise it will just as well with a little soap.

I’ve also had good results on my sailboat using the “orange” citrus based cleaner from Home Depot and a stiff scrub brush.

Kevin