Black mould on sealer

[Blackadder]

G'day
The line of sealer across the top of the windscreen (where the Fiat part joins the Buerstner part) is slowly but surely turning black despite regular use of Fenwicks Motorhome Cleaner. I've read a couple of threads on cleaning sealant but having checked the labels on most of the suggested products they all state "may damage enamelled surfaces". They all seem to be designed for cleaning between ceramic tiles rather than paintwork and most just seem to be diluted bleach. Obviously I don't want to damage the spotless white paint or the winscreen seal so I'm reluctant to take a chance.
Can anyone recommend a sealant cleaner that definitely won't do any damage?
Then I can concentrate on the problem of how my 5'6" frame can reach the bit in the middle...

 

[RobbyMClark]

Bump

 

[Phileas Fogg]

I was very sceptical when it was suggested but tried cilic bang black mould remover.
It made a vast improvement.
For absolute perfection I think the only way is to remove the old sealer and replace with something of better quality,
It has caused no damage to mine but I could obviously not guarantee it doesn't.

 

[BouncyBoatFolk]

Hi, I had similar on our van. When we collected it the dealer had assured us it would be cleaned thoroughly, however it seems we all have differing opinions as to the meaning of that phrase. The same area was affected as well as the grey sealing strip along the top edge of the van to the canopy.
The strip had gone completely black and mouldy. Knowing how well "Brintons patio magic" worked I brushed a diluted solution of that on the offending areas.
As already stated, it's not going to disappear completely, it's to late for that the damage has been done, it will however fade it to a more acceptable level. Failing that it would need ripping out and resealing, but you may want to think long and hard on that decision, the possibility of opening up an area for water to get driven into any minuscule holes left in the finish could be more worrisome than a little bit of residual staining.
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Mike.

 

[pagey]

Mine too the rain flap above the awning is stained and resists any attempt to clean it

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[BouncyBoatFolk]

Mine too the rain flap above the awning is stained and resists any attempt to clean it

Try the brintons, worked on mine. The left over can be used around the garden.
Mike

 

[BouncyBoatFolk]

Here's the top of mine now.

 

[TinaLes]

I have always put my trust in neat Bleach, especially for cleaning the mastic wall joints around baths & shower trays.
Get a small cup & a half inch paint brush, apply a thick coat to a small area as a trial, leave for half an hour then wash off with soapy water, it shouldn't damage an surrounding areas if applied carefully.
If it is still stained with black specs, then I am afraid the mastic will need racking out and replacing, as it does have a limited life span.
Good luck, hope that advice makes a difference for you.
LES

 

[Stealaway]

I've been using Williams Racing waterless Wash and Wax. It's good everywhere along as there is no grime to scratch the paint.

 

[sonar]

Or this

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[the1andonly]

Mould and mildew cleaners work but are typicaly bleach based And may rot many plastic or cotton woven fabrics. with sealants you may kill the mould but have a residual stain, replacement then the only perfect solution (some sealants/adhesives have built in mould resistance, read data sheet)s. The last time i had a problem was with the roof tent on the bongo.
When using bleach based product lots of ventilation and washing/ flushing is required. It may return. When it did i used advice from the bongo forum and used clove oil and gentle application. The mildew did not return during my ownership. Clove oil is now SWMBO's go to solution (yes pun intended a little dilution with water is ok)

 

[IRHP]

Mine too the rain flap above the awning is stained and resists any attempt to clean it

Same here

 

[David and Sally]

I have used Autoglym Super Resin Polish using a tooth brush. Cleans some off and it does not look too bad. Tough trying to get to the central part of the screen.