Thread: Chemicals to clean moss off hut roof

Originally Posted by Makros

The primary active ingredient in the moss and mould killers is Benzalkonium Chloride. 30 Seconds concentrate is <10% of this active ingredient.
I'd say just buy a 50% solution here : https://thesourcery.co.nz/products/b...onium-chloride
It'll kill any moss or mould it contacts so if it is thick it may take a few applications simply by the fact of you can't get the solution through it all in one go.

That'll sort it. Don't breath it in or get too much on your skin it's pretty unpleasant stuff.

interesting... will give it a try, hopefully it won't peel off my roof paint. thanks for the info.