IMESS 0 Posted September 1, 2020 Share Posted September 1, 2020 Hi everyone - I have some areas of paintwork on my deck where the paint has worn away back to a pinkish primer layer. Where the paint is thin I've noticed black mildew spots growing. I keep washing them off but am worried that I am doing more harm than good! I was wondering what people use to kill mildew on wooden decks - would you use something like ExitMould or is that too harsh? Cheers! Quote Link to post Share on other sites
Black Panther 1,568 Posted September 1, 2020 Share Posted September 1, 2020 I had something Similar. Finally went away when I repainted the deck. Quote Link to post Share on other sites
Cantab 341 Posted September 1, 2020 Share Posted September 1, 2020 Kiwi garden moss and mould remover from warehouse (same as 30 second) works brilliantly on the green stuff, teak comes up brilliantly. Quote Link to post Share on other sites
syohana 37 Posted September 1, 2020 Share Posted September 1, 2020 White vinegar will kill most kinds of mould. Quote Link to post Share on other sites
wheels 543 Posted September 1, 2020 Share Posted September 1, 2020 You are looking for any product that has the active ingredient called Benzalkonium Chloride. Spray and Walk away. It is not a bleach and is safe on Sails and Paint etc Products like Gone in 30secs is a Chlorine Bleach and bad for such surfaces. Quote Link to post Share on other sites
Cantab 341 Posted September 1, 2020 Share Posted September 1, 2020 51 minutes ago, wheels said: Products like Gone in 30secs is a Chlorine Bleach and bad for such surfaces. My mistake, I meant wet and forget, there are definitely two different approaches to these types of cleaners 13 hours ago, BOIGuy said: Kiwi garden moss and mould remover this not sodium hypochlorite based, some sort of ammonia compound is used :N-Dodecyl / Hexadecyl-N, N-dimethyl benzyl ammonium chloride. Sounds scary and the mist is not nice to breath but it works amazingly on the mould etc on the teak. Spray it on, come back a few days later, hopefully a shower of rain, teak spotless. Quote Link to post Share on other sites
IMESS 0 Posted September 1, 2020 Author Share Posted September 1, 2020 Thanks everyone - really helpful! Cheers Quote Link to post Share on other sites
marinheiro 352 Posted September 2, 2020 Share Posted September 2, 2020 I have seen suggestions that a Borax solution is better than bleach based products for mould/mildew removal and preventing regrowth. have not tried it yet Quote Link to post Share on other sites
wheels 543 Posted September 2, 2020 Share Posted September 2, 2020 On 2/09/2020 at 6:25 AM, BOIGuy said: this not sodium hypochlorite based, some sort of ammonia compound is used :N-Dodecyl / Hexadecyl-N, N-dimethyl benzyl ammonium chloride. Sounds scary and the mist is not nice to breath but it works amazingly on the mould etc on the teak. Spray it on, come back a few days later, hopefully a shower of rain, teak spotless. It's full name is Alkyldimethylbenzylammonium chloride (ADBAC). Benzalkonium chloride (BZK, BKC, BAK, BAC) is the more common name.Trade name is Zephiran, It is a organic salt. It is one of the most commonly used products on the Planet. It is used as a Germicide and is the active ingredient of Dettol. Also used as a spermicide, mouthwash, antibacterial throat lozenge, eye washes, Antibacterial soaps. The list is huge. It is also a Positively charged Cationic Surfactant and thus also used in a non germ related way as a fabric softener and Hair conditioner. Quote Link to post Share on other sites
mcp 32 Posted September 3, 2020 Share Posted September 3, 2020 On 2/09/2020 at 5:24 AM, wheels said: You are looking for any product that has the active ingredient called Benzalkonium Chloride. Spray and Walk away. It is not a bleach and is safe on Sails and Paint etc Products like Gone in 30secs is a Chlorine Bleach and bad for such surfaces. I second this recommendation and you will find this in the cheapest of Pak'n'Save disinfectants as the active ingredient. I spray my boat, path, deck, roof, etc with it and it works perfectly from a pressure spray mixed 50/50. Takes a week or so to work.....much longer in summer. https://www.paknsaveonline.co.nz/product/5231715_ea_000pns?name=lavender-disinfectant 1 Quote Link to post Share on other sites
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