Spotting on conservatory roof

[Salty Soybean]

Hi All,

So I have this conservatory roof I've been cleaning for over 3 years now, but after last clean there's all these white spots on the glass.

Anyone have any ideas as to what could cause this and how to clean it? - maybe some chemicals you could recommend.

 

[Part Timer]

Are you sure they're not inside, with the blue tint it might be self cleaning so be very careful applying chemicals. One reason why we charge substantially more to clean glass roofs

 

[spruce]

Splashes of cement? Has there been any roof or brick work done above it?

As per @Part Timer we never use chemicals on a glass roof and we treat them all as self-cleaning glass. Sometimes a customer may not even know the answer to that question when asked.

 

[tench0771]

Looks like bug poo to me hard to tell from the pic

 

[Salty Soybean]

Are you sure they're not inside, with the blue tint it might be self cleaning so be very careful applying chemicals. One reason why we charge substantially more to clean glass roofs

Yeah, I checked and the marks are on the outside. The customer did mention it's self-cleaning glass, so will defo be careful with chems

 

[Salty Soybean]

Splashes of cement? Has there been any roof or brick work done above it?

As per @Part Timer we never use chemicals on a glass roof and we treat them all as self-cleaning glass. Sometimes a customer may not even know the answer to that question when asked.

There are some new builds going up in a housing estate a couple roads away - maybe the wind is carrying the dust and settling on the glass. It's a right pain because I can't see the marks when cleaning because of the sun and angle.

 

[Chris W]

Yeah, I checked and the marks are on the outside. The customer did mention it's self-cleaning glass, so will defo be careful with chems

I’ve always used Rhino Goo UPVC Cleaner on all self cleaning roofs, it’s a very strong but safe product, you only have to read there reviews on Amazon.

 

[Salty Soybean]

I’ve always used Rhino Goo UPVC Cleaner on all self cleaning roofs, it’s a very strong but safe product, you only have to read there reviews on

Just took a look and purchased some, will see how it goes, cheers.