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Old 19 April 2017, 11:40   #1
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How to remove dark spots?

It's time for me to get the Sailing Club Ribs back up to standard again. I'm cleaning with Poly Marine on the tubes but i have these black spots that won't come off.


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Any ideas what i can do?
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Old 19 April 2017, 13:47   #2
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Try Bostik M501 Thinners .. That will move the most hardened stains..
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Old 19 April 2017, 15:08   #3
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Quote:
Originally Posted by Burgie View Post
It's time for me to get the Sailing Club Ribs back up to standard again. I'm cleaning with Poly Marine on the tubes but i have these black spots that won't come off.


Attachment 119049

Any ideas what i can do?
I'm a afraid it's consistency and routine maintenance that's needed,and not leaving it to a once a season (or less) Purge!.. that keeps Hyperlon looking good and in top shape.
I've not seen anything that removes it (mould) COMPLETELY!..from light coloured material...it's almost like the mould permeates the top layers.
Hopfully it's not too bad..if it is.You MAY possibly remove it...and likely the upmost layers at the same time.
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Old 19 April 2017, 15:12   #4
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Quote:
Originally Posted by Burgie View Post
It's time for me to get the Sailing Club Ribs back up to standard again. I'm cleaning with Poly Marine on the tubes but i have these black spots that won't come off.


Attachment 119049

Any ideas what i can do?
Double post
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Old 19 April 2017, 18:01   #5
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CilitBang or other "Oxy type cleaner" (especially one of the mold variations) has been reported to work here in the past.
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Old 19 April 2017, 18:24   #6
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Quote:
Originally Posted by Maximus View Post
I'm a afraid it's consistency and routine maintenance that's needed,and not leaving it to a once a season (or less) Purge!.. that keeps Hyperlon looking good and in top shape.
I've not seen anything that removes it (mould) COMPLETELY!..from light coloured material...it's almost like the mould permeates the top layers.
Hopfully it's not too bad..if it is.You MAY possibly remove it...and likely the upmost layers at the same time.
It's a boat we've been donated. Sad to see a RIB in such a state.


Will try these suggestions sometime next week, will report back. Thanks all
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