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rios01 03-05-2011 09:03 PM

Irwin 1981 Mold Problem?!?
Looking to purchase a 1981 Irwin. Upon inspection, I noticed there was black stains on the top of the boat. Is that a problem or something easily resolved. How can I tell if it is mold and if it is a major problem?

Faster 03-05-2011 11:57 PM

Where exactly?

Nonskid surfaces are notorious for holding and breeding mildew and mold, esp in a damp climate and with neglect. Generally a vigourous scrub, or in extreme cases, a gentle pressure washer will take care of it.

rios01 03-06-2011 05:54 AM

Thank you for replying. The mold is on the topside, from bow to stern.

rios01 03-06-2011 09:10 AM

Photo attachment
1 Attachment(s)
Atempted to attach photo of mold

Faster 03-06-2011 09:51 AM

The mold in the picture will/should clean up fine.

However a boat allowed to get to this state is a red flag to look very carefully at the rest of it.

RichH 03-06-2011 09:55 AM

Looks like 'artillery fungus', a very common fungus that grows on tree bark in wet climates.
Any 'caustic' type detergent will usually DISSOLVE it: Mild lye solution, TriSodiumPhosphate, SodiumSilicate, .... all the industrial strength 'caustic type' detergents - use with caution. Apply and 'let soak' as it takes time to dissolve. Clorox, etc. can kill it but doesnt dissolve it and the remaining 'dead fragments' then can become the nutrient source for other fungi.

Remaining 'shadows' can usually be easily 'bleached' with oxalic acid (wood bleach) - from a paint or hardware store.

Most probably you will see the same 'growth' on ALL the roofs of buildings in the same area.

rios01 03-06-2011 10:36 AM

thank you so much! this is good news because it needs extensive interior work as well.

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