Lol. Well done on the new job. But welcome to the world of working/ living by the sea.
The only thing I have ever done to my mohair roof is Renovo ultraproof it (reminds me my new 5 needs doing) and wash it regularly. It's a losing battle for me though as I live within 100m of the Sea so the seagulls tend to sit on the roof opposite my bungalow and wait for me to finish making my car poop free.
A regular wash with soapy water takes the deposits off leaving no residue, but it's more harmful to your paintwork really if left for very long.
The only thing I have ever done to my mohair roof is Renovo ultraproof it (reminds me my new 5 needs doing) and wash it regularly. It's a losing battle for me though as I live within 100m of the Sea so the seagulls tend to sit on the roof opposite my bungalow and wait for me to finish making my car poop free.
A regular wash with soapy water takes the deposits off leaving no residue, but it's more harmful to your paintwork really if left for very long.