Bottom paint recoat

journeyman

journeyman

GreatGrady Captain
Joined
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Location
Gloucester, MA
Model
Marlin
journeyman said:
On subject but maybe a different tilt - My hull was painted with a hard coat (non ablative) as it's first coat 2 years ago. Then, last year, I sanded the hull and used an ablative as it's second coat. The hull looks great. I pressure washed it last fall, no peeling, chipping etc. When I touch the painted area, the ablative paint rubs off on my hand or brush or jeans if I inadvertently rub up against it. Do I need to sand last years' ablative coat or just add to the ablative protection with another layer. The first hard coat is black and I'm using black ablative so I can't gauge the coverage. I know, I should have used a different base color but that's "water under the boat" now.
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I think I should have started a new topic when I posted this. It may have gotten lost in the other discussion. I will sand the entire bottom if I need to but I don't want to waste anymore time. I'm already late getting in. :(
 
If the hull is clean, you dont have to sand. By clean, I mean no slime or scum. Hopefully you power washed it before storage. Give it a good washing and let dry. Sand only the spots that are still dirty and perhaps chipped areas. Wipe the sanded areas with some cleaner like interlux.
The rubbing off of the older paint is normal.

For those who may have forgotten: Ablative over ablative - OK
Ablative over hard - OK
Hard over ablative - Not without complete hull prep.
 
what seasick said. Sand only the spots that are 'dirty' until it looks like fresh clean ablative. Then overcoat.

A lot of people use a coat of hard epoxy bottom paint as a base-layer and overcoat w/ ablative.
 
uncljohn said:
what seasick said. Sand only the spots that are 'dirty' until it looks like fresh clean ablative. Then overcoat.

A lot of people use a coat of hard epoxy bottom paint as a base-layer and overcoat w/ ablative.
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True but as mentioned, you cant put it over an existing coat of ablative, you have to remove all the ablative first.
 
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