Quick Rustoleum question and results so far

[eclipseturbors]

I started to paint my poor Starcraft Jupiter finally. I am using the roll/roll method with hardner. My question is do I have to scuff the painted surfaces once the paint has dried? I was following along on the instructions from another Flamingo build by Woodonglass. So far, everything was great. So good that I didn't need the second roller when I used some decent white foam rollers. I ran out of rollers, and picked some Harbor Freight type and for what ever reason I got alot of bubbles on the other side of the boat. No big deal, just an observation. I am going for about 4 coats so that I have nice coverage, but waiting 4 hours each time I run out of time in the day. Should I bother with scuffing up the 2nd coat to put on 2 more coats? Also, if anybody wonders, I had a fiberglass boat professionally painted with Awlgrip. There is only slightly more orange peel with the rustoleum method and about the same amount of shine. For comparison, I've seen more new cars with more orange peel than what I have with very limited prep and the rustoleum method. I'm pretty pleased.

 

[Woodonglass]

Re: Quick Rustoleum question and results so far

I'd recommend a light "Wet" scuffing with a 3m ScotchBrite pad between Color coats, just to knock any nubs down. Then a quick wipe down with a damp Mineral Spirit Tack Cloth and you're ready for the next coat.

 

[eclipseturbors]

Re: Quick Rustoleum question and results so far

Sounds good. I've been using #600 just because that's what I have laying around. I also have #320, but I figured that the #600 would be fine if I have to set sand it enough to give the new paint adhesion.

 

[Bob_VT]

Re: Quick Rustoleum question and results so far

Sometimes those massive bubble fields are caused by the hardener. You might be applying the paint on a hot day and the hardener is evaporating too fast......

 

[eavega]

Re: Quick Rustoleum question and results so far

I am using the Rustoleum Marine right now for some touchup on my Yarcraft. The recommendation from the can is that you wait 24 hours between coats, and you sand lightly with 400-grit between coats. I'm not using the additional hardener, though.

Rgds

 

[eclipseturbors]

Re: Quick Rustoleum question and results so far

It's actually been cooler by maybe 10 degrees. Humidity was a little higher, but I've been using mineral spirits. I've been working in my garage which is about 65-70 degrees. All the bubbles popped with a dry roller and I checked the finish this morning again. Still looking good. After work, I will just pick up a few sheets of #400 wet/dry and knock it down. Has anyone had any luck with a shorter flash time than 4 hours?

 

[Georgesalmon]

Re: Quick Rustoleum question and results so far

You really need to let all the solvents flash off before applying additional coats. Solvent entrapment could cause you problems down the line. I would wait the recommended time between coats.

 

[eclipseturbors]

Re: Quick Rustoleum question and results so far

I think that is the grey area a little... There is no recommended recoat time that I saw when using a hardner for either acetone or mineral spirits. My first couple of coats on the one side dried almost completely within 3 hours. I left it sit another hour just for that reason of letting the thinner evaporate. This side has been a little slower, but I attribute that to the lower temps, humidity, and staying with mineral spirits. The hardner I'm using is from a Sherwin Williams automotive paint system I used to paint a buddy of mine's car with that was left over. I'm not trying to troubleshoot a problem here, I'm just trying to see if anyone else has experimented with rustoleum flash times. The 4 hour guideline has worked so far and I really don't think that this method can work applying a wet coat after a short flash time like you would with an automotive paint system... but anything is for debate and experiment. So far, this has been a great alternative.

 

[Yacht Dr.]

Re: Quick Rustoleum question and results so far

I like to use the knuckle hair method ..

If the hairs on the back of my fingers tack to the surface without leaving an imprint..then its time to recoat..

YD.

 

[Woodonglass]

Re: Quick Rustoleum question and results so far

If you are using the exact formula from my thread then 4-6 hour recoat time is spot on if temps are 70? or higher. If not then 8-10 would be better. When you roll n' Roll you will get some bubbling but sometimes thats cause by rolling an area to long and with too much pressure on the stroke of the roller. Lighten up and don't linger in one spot to long. Also multiple light coats is much better than fewer thicker coats with Roll n' Roll.

 

[Yacht Dr.]

Re: Quick Rustoleum question and results so far

I was thinking the same thing Woody.. too much rolling..

I know that with certain Epoxy 2 part bottom sealers you would roll on and then come back with the Same used roller to Tip. But its only in one stroke ( not back and forth like rolling a wall with latex ) .. its just to tip off the Globules sorta speak..

I dont use Fresh dry rollers..but the same roller that was used for the application.

It might be different for the VS ..or Rusto.. but I would think its the same thing.

I think your bang on with the scotch brights .. paper does not get into the whole surface.

Unless your going for a showroom finish..then scotch brights are the way to go ..

Happy Boating

YD.

 

[eclipseturbors]

Re: Quick Rustoleum question and results so far

I wet sanded the side that needed recoated with #400. I knocked it all down, wiped it down with mineral spirits, and went back to roll/roll. I used the same cheap rollers from Harbor Freight. Same result... So at least it's consistent. The paint flattened out and still has a texture of sorts but, not enough orange peel for me to start wanting to wet sanding it. I'm still satisfied, but it appears that my gloss white will take 4 coats to get complete coverage. My garage was about 65 and it was about to rain again last night, so the paint was still tacky after 2.5 hours. It was cured this morning before I went off to work.

 

[Tail_Gunner]

Re: Quick Rustoleum question and results so far

Id post a high res pic of those "Bubbles" they are more than likely caused by gas entrapment and will only get worse as times goes on. In short the paint is more than likely ruined...Maybe not but highly likely.

 

[eclipseturbors]

Re: Quick Rustoleum question and results so far

The bubbles are only as I roll on the paint. I only started having them when I switched foam rollers to a cheaper brand. I have two coats on the right side as of now and saw no gas entrapment. I have been consistent with mineral spirits for both as a reducer and a prep solution. I was curious about the bubbles since I didn't get any with the other side that has 3 coats that was prepped identically and about the same painting conditions. I still think that it lies in the foam roller that I am using... but the bubbles do go away with a dry roller. I didn't need the other roller on the other side, which is the basis of the question.

 

[Woodonglass]

Re: Quick Rustoleum question and results so far

I use the Ultra smooth surface cabinet rollers from Lowe's...

http://www.lowes.com/pd_235020-11591-94065_0__?productId=3026940&Ntt=6%22+foam+roller&pl=1&currentURL=%2Fpl__0__s%3FNtt%3D6%2522%2Bfoam%2Broller&facetInfo=