[Public-List] Topsides painting experience to share

Tue Jul 15 06:44:34 PDT 2014

We don't recommend thinning two part polyurethane when painting fibre glass
unless particular brushing conditions exist (such as high temperature...)

Maybe I should be responding professionally off list?

Gord 
#426 Surprise
AKA Epifanes Canada

On 15/07/14 9:35 AM, "Wehicks" <wehicks at gmail.com> wrote:

> Do you thin paint til it's like water or can you give me an idea how thin with
> examples?  Ketchup , honey , stp, motor oil, etc.
> thanks 
> Walter 
> 
> Sent from my iPhone
> 
>> On Jul 15, 2014, at 7:58 AM, Gordon Laco via Public-List
>> <public-list at lists.alberg30.org> wrote:
>> 
>> Our position at Epifanes is that done well, a roll and tip job is superior
>> to spraying...
>> 
>> Gord
>> #426 Surprise
>> 
>> 
>> On 14/07/14 8:11 PM, "Wes Gardner via Public-List"
>> <public-list at lists.alberg30.org> wrote:
>> 
>>> We used to brush paint 100'+ foot boats with nice scaffolding and a paint
>>> crew
>>> of 3 - 4, always horizontally brushing back into your work and maintaining a
>>> wet edge. Calm weather and out if the sun is key. I can make brush paint
>>> look
>>> like a spray job, it's all about the flow....
>>> 
>>> Sent from my location
>>> 
>>> On Jul 14, 2014, at 5:27 PM, Randy Katz via Public-List
>>> <public-list at lists.alberg30.org> wrote:
>>> 
>>>> Greetings, All,
>>>> 
>>>> I just successfully finished painting the topsides of the boat. It turned
>>>> out rather well, especially considering it was my first experience with
>>>> one-part polyurethane. There were definitely tricks to learn along the way,
>>>> and having read a lot in advance was VERY helpful. I was out of the water
>>>> for about 2 weeks.
>>>> 
>>>> (Did a relatively simple bottom painting, too. I'm trying an ablative
>>>> (Interlux ACT) over too-thick layers of West Marine Bottomshield, which I
>>>> chipped off as best I could. Need to strip the bottom next year....)
>>>> 
>>>> I used Interlux Brightside white gloss and Interlux primer (also white,
>>>> though an off-color would have helped in order to distinguish between
>>>> primer and finish coat).
>>>> 
>>>> And yep, prepping was most of the job! Simple scaffolding (an elevated
>>>> board walkway, really) made all parts reachable. I sanded through 12 yr.
>>>> old coats of Rustoleum applied by the previous owner over the gel coat.
>>>> (That paint was listed as "good" by Practical Sailor-- that surprised me!
>>>> It had fish oil in it---?) There were, alas, spots where sanding went
>>>> through to the bare fiberglass: I used the grit and primer as recommended
>>>> by Interlux in those cases. The hull looked like hell when I was finished,
>>>> and I couldn't wait to get primer on to cover that mess!
>>>> 
>>>> I applied two primer coats and three finish coats, sanding between as
>>>> recommended. There is a bit of an art to the sanding and painting process,
>>>> which I was beginning to get a handle on by the time I finished (of
>>>> course!). In the end, I have a shiny coating that looks great with only a
>>>> few dings here and there, but even those pass the 10-feet-away test.
>>>> 
>>>> Rolling and tipping-- I used foam rollers from LFS in Bellingham ("slacker"
>>>> brand). These had a bit thicker nap than West Marine's and so were easier
>>>> to control. Thinning with Interlux 333 helped keep the paint flowing during
>>>> hot/windy times of the day. Question-- Best to tip with horizontal strokes
>>>> or with vertical strokes? I used horizontal, and things turned out well.
>>>> Another person in the yard (The Landings, Bellingham) went with vertical
>>>> tips with the plan to avoid drips and runs.
>>>> 
>>>> Well, who knows?
>>>> 
>>>> At any rate, this was a job I'd avoided for several years. It turned out to
>>>> be laborious, but not as bad as I'd expected--and the boat looks a HECK of
>>>> a lot better than before.
>>>> 
>>>> If any of you would like to see a basic assortment of photos, let me know--
>>>> I'd be glad to send you a few.
>>>> 
>>>> Hope this helps--
>>>> 
>>>> Best Regards,
>>>> 
>>>> Randy Katz
>>>> #249, Simple Gifts
>>>> Bellingham/Seattle
>>>> 
>>>> 
>>>> 
>>>> 
>>>> --
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>> 
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