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Author Topic: Paint over fiberglass  (Read 411 times)

cdnfurball

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Paint over fiberglass
« on: April 17, 2019, 03:07:44 AM »

Hoping your experience can help a nubee.    My hull is planked, sealed and sanded 2 part epoxy. Then l used 3/4 oz fiberglass laid with the 2 part epoxy again.   I am wondering the best type of paint for the hull.    Thanks
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dougal99

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Re: Paint over fiberglass
« Reply #1 on: April 17, 2019, 08:14:27 AM »

I use plastic undercoat and car spray paints with no problems. One boat is nearly 20 years old.  :-))
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nemesis

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Re: Paint over fiberglass
« Reply #2 on: April 17, 2019, 09:30:40 AM »

use a plastic primer first, nemesis
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cdnfurball

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Re: Paint over fiberglass
« Reply #3 on: April 17, 2019, 11:13:00 AM »

Thank you for the guidance.      What do you mean . " Plastic undercoat " ?
I have found in these forums, pending where on this plant you are located,  terminology can be different.



Thanks
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JimG

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Re: Paint over fiberglass
« Reply #4 on: April 17, 2019, 12:47:55 PM »

Basically a primer paint intended for use on plastic parts in cars. e.g. car bumpers. (In the USA read fenders) It should bond better than a primer intended for metal.
Jim
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NickelBelter

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Re: Paint over fiberglass
« Reply #5 on: April 17, 2019, 01:33:57 PM »

Here in Canada you can find Krylon Fusion paints which supposedly bond to plastics better than regular spraypaint.  Any spray primer will work just fine too. 
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nemesis

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Re: Paint over fiberglass
« Reply #6 on: April 17, 2019, 07:43:32 PM »

Plastic primer etches the surface of the plastic or gel coat of a laminate therefore enabling the following coats to bond, done properly it is very difficult to scrape the paint off the surface. nemesis
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coch y bonddu

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Re: Paint over fiberglass
« Reply #7 on: April 17, 2019, 11:44:12 PM »

Tbh you dont really need a plastic primer at all,this is simply because it is not plastic at ll but Grp,if you are at all afraid the primer will lift with I know it will not then in Halfords they sell an etch primer,apply this first then primer afterwards,in all the years of preparing grp panels for cars boats and actually planes I have never had paint peeling just using a normal primer,preparation is the key to success.30 odd years of painting experiance tells me this  O0 O0 O0 O0 O0 O0




Dave
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derekwarner

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Re: Paint over fiberglass
« Reply #8 on: April 18, 2019, 03:02:30 AM »

Thats what ..my dear old Dad always said......"[/size]a good paint job all in the preparation![/size]" O0 .................. Derek
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Derek Warner

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