Congrats. For the really tough mould pool chlorine is the cheapest and most effective, a mix of 25% is plenty strong enough. Old clothes, rubber gloves & a respirator apply with a cloth, for hard to reach places a garden sprayer with the nozzle set to jet and hose it off. Don't forget the ppe

Bleaches are a superficial kill. Only Clove oil kills the mould spores and stops regrowth.

We had a similar problem in our Top Hat, which has a rough cast interior. Lots of nooks for the mould to settle in.

We did three things.
1) Clean properly with Wet and Forget Mould Indoor. www.wetandforget.com.au/products/wet-forget-indoor-2l
2) Paint undercoat with Zinsser 1L Bulls Eye 1-2-3 Undercoat, then a top coat of your choice. Gloss is better as it's not as easy for mould to grow on in the future. It also conceals any staining left behind from the mould. You can also add a mould inhibitor if you think it's worth it.
3) Make sure the boat is well ventilated. We put a solar vent fan in the v-berth and we leave the galley hatch partially cracked so it flows. The vent fan runs 24/7 with a battery that's recharged via solar during the day. It's been running so far since mid 2021.
www.whitworths.com.au/day-night-solar-vent-with-stainless-steel-cover

To date, there is no mould evident anywhere that we've treated. There is some old mould, that appears dormant in areas we can't easily get to.

Disclaimer, I don't work for, or gain value from any of the companies above, but have had good results from these products.

I couldn't help it, I had to google the active in wet & forget benzalkonium chloride, widely used for sterilisation of hospitals and surgery prep. Looks like you could get more bang for your buck if you shop around

Kinora said..
Kinora suffers from mould. I have found 3 things that help:
1) ventilation - I now have a solar-powered vent on the forward hatch and plan to install more vents running from the house battery at strategic points to improve air flow.
2) fix leaks - there were several ways for water to get inside (keel stepped mast, dodgy fuel locker), fix those to keep the humidity inside the boat as low as possible.
3) treat the mould following stingysailor.com/2021/11/06/remove-and-prevent-mildew-for-pennies/ - I've been using their Formula 2 and it has been very effective.

Cheers,
Kinora

Cheers for that Kinora. Where do you get the trisodium phosphate?

Saltuarius said..

Saltuarius said..

Kinora said..
Kinora suffers from mould. I have found 3 things that help:
1) ventilation - I now have a solar-powered vent on the forward hatch and plan to install more vents running from the house battery at strategic points to improve air flow.
2) fix leaks - there were several ways for water to get inside (keel stepped mast, dodgy fuel locker), fix those to keep the humidity inside the boat as low as possible.
3) treat the mould following stingysailor.com/2021/11/06/remove-and-prevent-mildew-for-pennies/ - I've been using their Formula 2 and it has been very effective.

Cheers,
Kinora

Cheers for that Kinora. Where do you get the trisodium phosphate?

All good, found it at the big green shed under the trade name 'Tricleanium'.

That's the one. Nice and bright yellow packet with some intriguing old-world style graphics.

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