Narrow boat. Hull paint

[Crow]

Hello all , Going to shot blast my hull,,do I apply black bitumen direct to get a good key. Or do I prime with red oxide first. Thanks in advance.

[AKULA]

Co mastic strait to steel

[luctor et emergo]

somebody will be along shortly, to ask why you posted this question twice.

 

 

 

 

aaah...

[AKULA]

A jobs worth probably will.

 

 

Answer no primer straight to bare steel clean

[luctor et emergo]

You're just showing off now.

[matty40s]

If you are going to shotblast it, pay a bit more and coat it with a 2 pack, epoxy or comastic. You will get far better protection, and will not see the waterline stripped as soon as someone lets their fuel tank dipstick drip in the water near your boat!!!

[luctor et emergo]

Or breaks through the ice.

[AKULA]

Just to add mine has just come out the water after 7 yrs due to illness naughty I know it had 3 coats of comastic no probs found will be putting same back

[luctor et emergo]

Just to add mine has just come out the water after 7 yrs due to illness naughty I know it had 3 coats of comastic no probs found will be putting same back

 

 

And same back wins by a nose..

[Crow]

Thought I might get twice the amount of replys , by posting twice.

[luctor et emergo]

And, did you?

[Neil2]

If you are going to shotblast it, pay a bit more and coat it with a 2 pack, epoxy or comastic. You will get far better protection, and will not see the waterline stripped as soon as someone lets their fuel tank dipstick drip in the water near your boat!!!

Definitely. A total waste of money grit blasting a hull to bitumen black it, at the very least use Comastic but I'd epoxy coat it. You might also consider something like Zinga which some members of the forum seem to rate highly.

[Crow]

Thanks for replys. I never thought about. Oil,ice ,etc. do you put any thing on top of comastic.

[Bloomsberry]

In my experiance, bitumen lasts about 6 months tops in a marina environment.

 

Epoxy is the most sensible coating if going through the trouble of grit blasting your boat.

[matty40s]

no,comastic is good on its own will turn a dark grey after a few years.

[AKULA]

Nothing on top of comatic re doing mine now 2 coats fine I'll do 3 to 4. My last lasted 7 yrs

[matty40s]

Nothing on top of comatic re doing mine now 2 coats fine I'll do 3 to 4. My last lasted 7 yrs

I can beat that, mine was done in 2004, and again last year

[AKULA]

Pmsl you're as bad as me I soent 15 yrs puttin it on in a well known boat builders weren't my job but didn't mind doin it gettin it off is a diff matter

[luctor et emergo]

Thanks for replys. I never thought about. Oil,ice ,etc. do you put any thing on top of comastic.

 

Ice boards.

Pmsl you're as bad as me I soent 15 yrs puttin it on in a well known boat builders weren't my job but didn't mind doin it gettin it off is a diff matter

 

Most of us manage to do it within a week...

[AKULA]

Lol try putting it on 3 brand new boats a week

[Neil2]

I don't know if anyone remembers but there was a thread a while ago about someone painting their hull with standard B&Q external gloss paint, and amazingly it was still stuck to the boat years later. I reckon you'd be far better off using something like that in preference to bitumen which is probably the worst thing you can protect your hull with these days.

[matty40s]

That was Lawrence Hogg, and I saw the patches newly welded on Barnet when it was out of the water at Norton Canes...

[AKULA]

Agreed

[Neil Smith]

2 pack epoxy every time.

 

Neil.

[cuthound]

Have you considered using a 2 pack epoxy blacking? As you are already shotblasting the hull the only additional cost will be for the paint, and epoxy blacking lasts 3-5 times as long whilst providing better protection.

 

When I next black my boat I will go for epoxy blacking, but in my case will have to pay extra to have the old domestic blacking removed and the hull shot blasted before the expoxy blacking can be applied.