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Subject Topic: Advice on mould ?? Post Reply Post New Topic
21/4/2018 at 12:15am
 Location: Exeter
 Outfit: Conway Cardinal Clubman
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Dear all,

I got a Conway Cardinal two years ago - the canvass had been recently replaced when we bought it. Packed it away carefully for the winter, dry. It was stored outside (in lee of the weather, next to the house).

It was fine last year, but this year, a few days ago I opened it up and the canvass was covered with spots of pale mould.

I'm afraid of ruining the new canvass! I can live with it looking patchy, but I'm a bit worried that if I can't get rid of it, it might grow over time, spread, and rot the canvass. It seems to have grown through to the inside, too.

Is there a way to clean it off? I know not to use anything with soap. Is there a purpose-made product? (I've looked, but everything seems to be 'water-proofing' - I'd like to avoid that, given it's new canvass).

Off the top of my head, I've thought of using white vinegar, hydrogen peroxide, a steam-cleaner? Would dilute bleach work, and still leave the canvass water-proof?

(I've even thought about covering it with polythene sheet and hiring an ozone machine! It wouldn't look any better, but at least the mould would be dead!)

We had a lot of rain early in the week, and it's still water-proof - would we be better off just leaving it?

It's our first trailer tent - and I have no idea if this is something everyone lives with, or if I should be panicking to get it sorted, before it's too late!?



21/4/2018 at 10:31am
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My thoughts are to leave it. If you go camping in some really hot weather the sun will do the bleaching for you and kill off any live spores.

Canvas is only waterproof because water soaks into it and expands the fibres causing the micro holes in the weave to close up. A 'bubble' or film of water sits in the tiny holes and prevents any rain coming through...all to do with science. That is why if you rub canvas when it is raining water will leak through, because you will have broken the film of water preventing it. If you clean it with any agent that prevents water soaking into the fibres you will ruin the natural waterproofing.

I found some light coloured spots on the inside of my polyester tent the last time I went camping. I washed them off with plain water and also it was a very sunny trip and the spots all disappeared. I have just come back from another trip and there were no further spots...so try clean water and then leaving it out on a hot sunny day, but make sure it is totally dry before packing it away.


21/4/2018 at 1:22pm
 Location: Poole Dorset
 Outfit: Conway Challenger 1997
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Please, please don’t use any form of bleach or even vinegar on your canvas. Pure soap flakes and lots of water are the only thing you should use on canvas. Steam will kill off the spores, but you may never get rid of the discolouration.


21/4/2018 at 2:48pm
 Location: Northern Ireland
 Outfit: Sterckeman Alize Concept CP480
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Lots of previous threads on this ... have a trawl through them

When I had mould in my Pennine I used Sudbury's Mould and Stain remover ... which worked a treat ...

I gave it one coat of Isabella's proofing spray ... then had no problem for several years ...


21/4/2018 at 9:38pm
 Location: Exeter
 Outfit: Conway Cardinal Clubman
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Thank you everyone!

Kelper – yeah I spent some time reading through past threads, and tips from people on youtube and elsewhere. It seems just about every possible ‘solution’ you can think of; at least one person reckons it’s the best! It’s so confusing… Right now, the mould isn’t too bad, but nice to know there’s an option if I can’t get rid of it otherwise. I’d never heard of that product, so, thank you!

Darren – that’s interesting. Seen a lot of people recommending vinegar, and bleach! And loads of people saying ‘Never, ever, use soap!’ Have you used soap? It kind of made sense to me to not use soap, cos I was thinking it would encourage ‘wetting’? And have the canvass soak up water rather than bead it? But I guess there’s a difference between pure soap, and something like fairy liquid and the like, that has other stuff in it? (In woodworking, occasionally people will finish a table top with soap, instead of linseed or wax. So it must have some sort of waterproofing effect, in that application at least...)

Bob – strangely enough, we had a lot of sunshine yesterday, and the mould does seem to have faded a bit on the side that was facing south. I didn’t know how canvass ‘worked’ - so thanks for that! Your suggestion of cleaning with water and leaving it open in the sun has to be the first thing to try…

So – it’s supposed to be dry tomorrow, and maybe the rest of the week. I shall scrub the canvass with a soft brush and lots of water, and keep doing that for as long as the weather allows. I’ll turn the trailer around so all sides get some time in the sunshine.

I’ll post back here on how I get on, in case it’s useful for someone else in the future?

As Darren said, I don’t think I’ll be able to get rid of the stains; the mould has gone right through the canvass – it’s a shame, cos the trailer looked lovely when we first got it! But hey, if it stays waterproof and it’s not going to rot away? That’s all that really matters!!

Thanks again everyone for all your help!
:)


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22/4/2018 at 9:51am
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Just remember that if the canvas has not seen water for some time and has dried out you may get the odd drip or two until it becomes waterproof again...they call it 'weathering'. Don't go too mad with the scrubbing brush

Incidentally, I don't know if you have come across the Conway Owners Club but you may get lots of help and information from them.

Post last edited on 22/04/2018 09:57:32


23/4/2018 at 11:06am
 Location: Poole Dorset
 Outfit: Conway Challenger 1997
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Pure soap flakes don’t aid waterproofing. It’s the kindest thing for canvas. It will need lots of rinsing with fresh water once the area is clean. You’ll then need to weather the canvas to restore its natural waterproofing


17/5/2018 at 2:10am
 Location: Exeter
 Outfit: Conway Cardinal Clubman
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Dear all,

Just an update on my mould issue!

So I tried scrubbing with a soft brush and plain water; it looked better! I Let it dry and packed away - next time I put the tent up, the mould was back!

I tried soap, as Darren suggested. I think it did a much better job than plain water, of cleaning the mould off. I hosed down the canvass to rinse away the soap (I misunderstood about the soap - thank you for explaining it!)

Let it dry. Packed away, and a week later when I put it back up the mould was back again! Gah!

I've left it up for the last two weeks - we've had a couple of bouts of rain, and the canvass is still waterproof, so I didn't ruin it!

The next thing I shall try, I think, is steam. I've got a pal with a wallpaper stripper - I think maybe if the steam will kill the mould, at least it won't get any worse...?

Longer-term, I've read about 'silver-salts' that are supposed to prevent mildew on painted walls in damp houses? So I'm wondering if spraying the canvass with something like that might work?

(Of course - I'm just scared of ruining the canvass!)

I think the problem for us is that our house is at the bottom of a valley, between two rivers; it's always damp here. I guess most people don't have this issue!?

Still - if I do find a way of controlling the mould, where we live, well then, it should work for anyone!!

I shall keep you all posted as and when I make some progress!!

All the best everyone!


17/5/2018 at 8:11pm
 Location: West country
 Outfit: Mondeo
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Would Milton fluid work, the stuff we used to sterilise baby bottles with. Just a bit in some water.


17/5/2018 at 8:53pm
 Location: Poole Dorset
 Outfit: Conway Challenger 1997
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Quote: Originally posted by navver on 17/5/2018
Would Milton fluid work, the stuff we used to sterilise baby bottles with. Just a bit in some water.



DO NOT USE MILTON FLUID ON CANVAS, IT WILL RUIN IT


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17/5/2018 at 8:54pm
 Location: Poole Dorset
 Outfit: Conway Challenger 1997
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Quote: Originally posted by hardymilts on 17/5/2018
Dear all,

Just an update on my mould issue!

So I tried scrubbing with a soft brush and plain water; it looked better! I Let it dry and packed away - next time I put the tent up, the mould was back!

I tried soap, as Darren suggested. I think it did a much better job than plain water, of cleaning the mould off. I hosed down the canvass to rinse away the soap (I misunderstood about the soap - thank you for explaining it!)

Let it dry. Packed away, and a week later when I put it back up the mould was back again! Gah!

I've left it up for the last two weeks - we've had a couple of bouts of rain, and the canvass is still waterproof, so I didn't ruin it!

The next thing I shall try, I think, is steam. I've got a pal with a wallpaper stripper - I think maybe if the steam will kill the mould, at least it won't get any worse...?

Longer-term, I've read about 'silver-salts' that are supposed to prevent mildew on painted walls in damp houses? So I'm wondering if spraying the canvass with something like that might work?

(Of course - I'm just scared of ruining the canvass!)

I think the problem for us is that our house is at the bottom of a valley, between two rivers; it's always damp here. I guess most people don't have this issue!?

Still - if I do find a way of controlling the mould, where we live, well then, it should work for anyone!!

I shall keep you all posted as and when I make some progress!!

All the best everyone!


Lidl had a steam cleaner recently, better than a wallpaper steamer



20/5/2018 at 1:35pm
 Location: Northern England
 Outfit: Coleman Mosedale 5
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Good luck with getting it sorted, anyone with a folding camper will tell you mould is your worst nightmare! We have had our camper for four years and there were mould spots on the door canvas when we got it, no idea why. The mould hasn't really got any better or worse over time and the canvas is perfectly waterproof, it just looks unsightly. We have never done anything with it.

We store our camper outside all year round without any problems but we did buy a new waterproof cover. I wonder if a winter cover would be a good investment for you?



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