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Summerhouse mould? Is it ruined?

uptown47uptown47 Posts: 4
in Problem solving

Hi all,

I'm really hoping someone can help me with this one.

I built a summerhouse last year. The wood wasn't treated at all so, once it was built, my wife (she's head of painting in our house) sprayed it with some Rystix Timbercare stuff. Unfortunately, it was 'clear' and I think she's maybe missed parts, either that or the wood was still wet when she applied it. Either way, one side of the summerhouse has started to get either mouldy or sun bleached?

image

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I think it might be mould but not sure.

I've tried scrubbing it with bleach/water mix but it won't come off. I've also tried lightly sanding it but it won't come off.

I've bought more Rystix treatment, this time in "Oak" hoping the darker colour will help hide the black "mould" (if it is mould?).

Do you think this will work? Or am I just going to cause more problems? Is there a way to solve this?

A big thank you for any help you can give me on this.

Cheers :)

Posts

  • uptown47uptown47 Posts: 4

    Thank you pansyface.

    Yes, the summerhouse was a LOT of work to build. It was chucking with rain during the construction and, although I covered it with a tarp every night, the wood got absolutely soaked. I think we've not coated it correctly with the treatment too.

    I'll try and get hold of some Oxalic Acid. The only thing I've found is Bar Keeper's Friend. Is that the stuff? Or is there something else that contains it that you know of?

    Thanks again :-)

  • uptown47uptown47 Posts: 4

    Thanks. I've just bought some from Amazon. It's the powder. I'll give anything a try at this point!

    If anyone else has any other suggestions as well then please chime in as the more ideas the better!

    Thanks again pansyface. :-)

  • Allotment BoyAllotment Boy Posts: 6,774

    If it is a mould & not a stain there are several  treatments sold under a variety of names such as Patio magic Mould magic etc. There are also DIY decorating treatments for mould such as Polycell 3in 1 The main ingredient in all of them is Benzalkonium Chloride some contain additional agents. They do not work instantly but the effects work over a period of time (2-3 weeks). They certainly work on algae outside and black mould you can get in Bathroom grout.

    VERY IMPORTANT- DO NOT MIX BLEACH WITH OTHER TREATMENTS- It may release chlorine gas which is highly toxic. 

    AB Still learning

  • uptown47uptown47 Posts: 4

    Thanks Iain,

    I've order the Oxalic Acid and will give that a go first. Good point about the Chlorine gas! I have been using a mask when I work on it (primarily for the mould spores) but will be very careful and bear in mind your warning.

    Thanks again for the great advice. It's next on the list of things to try!

    Cheers :-)

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