Paint thickener??

[Bill O]

Originally Posted by capt jgw

Probably just slows the reaction. For brush you want it slow so the marks flow out. For spray you want it faster.

^^^This is the answer!

Obviously your paint is only intended to be sprayed (no instructions or solvent for brushing). You may have to test some brushing solvents w/your paint to see if it is compatible and is slow enough to allow air bubbles/brush marks to flow out.
While you may find an acceptable solvent, the thinner paint will need more coats for proper film thickness.

[TeddyDiver]

My best bet is fumed silica powder, the same stuff you use to thicken epoxy and whatever..

[capt jgw]

Originally Posted by TeddyDiver

My best bet is fumed silica powder, the same stuff you use to thicken epoxy and whatever..

I wouldn't have thought of using that in paint. Great idea.

[Bill O]

Originally Posted by TeddyDiver

My best bet is fumed silica powder, the same stuff you use to thicken epoxy and whatever..

Huh?? It would change the texture and appearance of the paint. Also think it would be relatively clumpy and hard to roll out evenly.

[Chotu]

Originally Posted by Bill O

^^^This is the answer!

Obviously your paint is only intended to be sprayed (no instructions or solvent for brushing). You may have to test some brushing solvents w/your paint to see if it is compatible and is slow enough to allow air bubbles/brush marks to flow out.
While you may find an acceptable solvent, the thinner paint will need more coats for proper film thickness.

Sorry, Bill. Way off. Lol

The kick rate of the paint isn't what I was asking about.

I asked about a thickener that would allow me to apply it with a brush or roller.

These have nothing to do with each other.

Cabosil would work and I used it for my nonskid in a larger amount, but it will also dull the shine of the paint and cause it to go flat. So while it's workable, I was hoping there was an additve you can buy that's liquid and shiny and doesn't affect the shininess of the paint.

[Bill O]

Have you actually try to roll the paint yet?

We've rolled thin paints and if you add the right thinner, the bubbles come out w/o tipping. It works, but you will need more coats with the thinner material and need to be careful to not overload the roller to avoid drips.

[Chotu]

Originally Posted by Bill O

Have you actually try to roll the paint yet?

We've rolled thin paints and if you add the right thinner, the bubbles come out w/o tipping. It works, but you will need more coats with the thinner material and need to be careful to not overload the roller to avoid drips.

it’s not about bubbles or drips.

It’s about viscosity. That’s what I’m asking about. Viscosity.

have you sprayed paint out of a real gun system?

It’s that same paint. It's water. It does not go on a brush or on a roller. It’s basically water. It needs to be thickened in order to stick to a roller. It cannot stick to a roller the way it is.

[Bill O]

Originally Posted by Chotu

it’s not about bubbles or drips.

It’s about viscosity. That’s what I’m asking about. Viscosity.

have you sprayed paint out of a real gun system?

It’s that same paint. It's water. It does not go on a brush or on a roller. It’s basically water. It needs to be thickened in order to stick to a roller. It cannot stick to a roller the way it is.

Yes, I've sprayed quite a bit and also rolled thin paints also.

If you are using a foam roller it absorbs into the roller and why you wet it out. Just need to be more careful of the roller load and no short cut you will need to add many coats if you want to use your paint.

You all ready know adding solids to the paint will change the characteristics of the paint so much that it will not match your existing paint.

Best I can say is try rolling the thin paint (on a test surface) and see how it goes. You might be surprised at the results.

[Chotu]

Originally Posted by Bill O

Yes, I've sprayed quite a bit and also rolled thin paints also.

If you are using a foam roller it absorbs into the roller and why you wet it out. Just need to be more careful of the roller load and no short cut you will need to add many coats if you want to use your paint.

You all ready know adding solids to the paint will change the characteristics of the paint so much that it will not match your existing paint.

Best I can say is try rolling the thin paint (on a test surface) and see how it goes. You might be surprised at the results.

OK. So you are saying to try a different approach.

Forget about a thick paint, put it on like a stain, yes?

then do layer after layer until it builds up enough hiding?

I will test it right on the hull. Lol I only have a quart and nothing can look worse than it does now. I think liquid gold would be much cheaper than this stuff so on it goes. I just wanted to turn a couple of patches back to the proper color so the boat passes the 100ft test

[Bill O]

Originally Posted by Chotu

OK. So you are saying to try a different approach.

Forget about a thick paint, put it on like a stain, yes?

then do layer after layer until it builds up enough hiding?

I will test it right on the hull. Lol I only have a quart and nothing can look worse than it does now. I think liquid gold would be much cheaper than this stuff so on it goes. I just wanted to turn a couple of patches back to the proper color so the boat passes the 100ft test

Unfortunately, yes you must do multiple coats to get the proper film thickness.
Do any of the spots need primer?

[Chotu]

Originally Posted by Bill O

Unfortunately, yes you must do multiple coats to get the proper film thickness.
Do any of the spots need primer?

yes. One of the spots still needs some primer. The other has primer already.

[Bill O]

Is the primer a similar color to your finish paint? This could help hide some blems.

[Chotu]

Originally Posted by Bill O

Is the primer a similar color to your finish paint? This could help hide some blems.

only if I was a Navy boat lol

There are no color choices in the primer. It’s gray

[Chotu]

A little add-on question. About efficiency.

I do only have a quart of this paint right now.

Would it be more efficient to spray it on and lose particles to the air? Or roll it on and lose some to the roller?

[Bill O]

Too many variables to do the comparison. Type of roller, type of HVLP gun, etc.? Do you have the equipment on board to spray?

How large of an area are you painting? You can make very small quantities for rolling, but typically you need to make more volume to fill the gun so you don't run out. You can burn through that quart quickly spraying with potentially no do over if the job gets botched some how.

Typically spray will come out better and done in one shot. Need more work (than rolling) taping off, etc. to avoid over spray. If spraying outdoors need to wait for "good" conditions. Need more solvents to clean spray equipment after done. Most yards will not let you spray.

Roller is good for small repairs on the hook, but takes more coats to finish. OK finish especially if you add enough "slow" solvent for it to lay down properly.

Sure there is more and just my quick thoughts.