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Old 11 August 2007, 05:36   #11
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black gel has more pigment, pigment reduces water resistance therefore over very long periods of time could increase moisture content in grp....... i think!!!
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Old 11 August 2007, 06:03   #12
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black gel has more pigment..
Are you sure?
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Old 11 August 2007, 09:00   #13
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Are you sure?
no.

thought i had the info to hand but cant find it now!
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Old 11 August 2007, 09:09   #14
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Old 11 August 2007, 09:33   #15
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i cant remember exactly but i thought any pigment increases chance of osmosis (even white) but black was worse due to more coloring.... i also have an idea black or darker colours inhibit which can cause undercure... does that not decrease water resistance and cause blistering??

damn i knew i should have listened more
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Old 11 August 2007, 10:07   #16
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It's certainly the case that if you over pigment with black it slows the cure a bit but I dont think it actually prevents it. I've used black a lot and it takes very little pigment to make a solid colour. The pigments I've found to be the thinnest are yellow and orange. If laminating, rather than over pigmenting or using too thick a gel, I slightly pigment the following couple of laminate layers to ensure there is no see through. I know it's considered back practice because you can't see the detail of your laminating but if it's a light pigment I've found no difficulty.

Anyway, I've had two black hulls and they are excellent because they don't show the filth that is inevitable on a rib hull, inside and out. Up here, the deck becoming too hot in the sun isn't a problem but it certainly could be in a sunnier climate. A white deck is going to look scruffy almost immediately and you're going to need shades when the sun is out. I'll no doubt get shot down about that comment.
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Old 11 August 2007, 15:30   #17
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we have always run black/black here with no problems and it doesnt show the mud and sand etc. The only other colours we have had apart from our original searider in obligatory grey/orange was white hull&decks with yellow consol and tubes, with grey strakes and wear patches. Looked nice clean but didnt stay clean long here with our rise and fall of tide and associated sh..! -sorry mud! A white hull is easy to find some gelcoat filler for if you ding it, black aint so easy.
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Old 13 August 2007, 07:59   #18
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Black tubes white hull - also available in any other combination!
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Originally Posted by Zippy
When a boat looks that good who needs tubes!!!
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