Waterborne primer

[Kent]

Anyone use it and what are it's pro's and con's? Any suggestions to get it to dry faster outside of a booth? What about roller primers what are your thoughts on them?

Kent

[68-chevyman]

Anyone use it and what are it's pro's and con's? Any suggestions to get it to dry faster outside of a booth? What about roller primers what are your thoughts on them?

Kent

The water based primer seem to work great. Especialy for sealing down silicones, mold release, & other problems that are impossible to remove. But I don't see any improvement comming to make it dry faster. I did the roll on primer thing for a while just to check it out, it seems to work fine, but you throw alot of rollers away & you sand your butt off getting rid of the feather edge & deep orangepeel left behind, even with the smoothest foam roller. If you are interested in fast ways to prime small areas, check out some of the new ultra violet cure primers in the airesol cans. I know they cost alot, it's probly not worth it, just a thought.

[Len]

Anyone use it and what are it's pro's and con's? Any suggestions to get it to dry faster outside of a booth? What about roller primers what are your thoughts on them?

Kent

Waterborne is a lot different than waterbased and most waterborne products can be dried more quickly using a blower type system that moves air across the surface and like solvent systems heat can help. However waterborne is usually not a good product for the hobbyist because of the additional variables involved in it's use.

Roll-on primers are another story, they are great for both body shops and for the hobbyist because they generate no overspray and are quick and easy to use. If you keep one end of the roller more dry and enlarge your rolled area with each coat you can feather the edge so that it sands quite easy. By using roll-on you eliminate the need for covering the car and even eliminate a lot of masking. I put a sheet of alum. foil in the tray so that I can just toss it when I'm done to eliminate cleanup. To me the price of the rollers is secondary to the masking and cleanup needed when spraying. I only use roll-on primer on spot repairs, it's not a good system for priming entire panels.


http://autobodystore.net/Merchant2/graphics/00000001/tnupolkit.jpg
Roll-On Primer Kit Link (http://autobodystore.net/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=PRI)

[Kent]

Len, what are the variables that you would be concerned about with waterborne?

I am a lot lizard (mobile paint repair) and am interested in the roller primer for the reasons you mentioned. No masking, no overspray, better control and no gun to clean. Did I mention no masking? Transtar sez to do your first coat out to the edge of the scuffed area and then subsequent coats decreasing in size until you are covering just the repair area. I think I will get a qt and check it out. Thanks for your help!

[Len]

Len, what are the variables that you would be concerned about with waterborne?

I am a lot lizard (mobile paint repair) and am interested in the roller primer for the reasons you mentioned. No masking, no overspray, better control and no gun to clean. Did I mention no masking? Transtar sez to do your first coat out to the edge of the scuffed area and then subsequent coats decreasing in size until you are covering just the repair area. I think I will get a qt and check it out. Thanks for your help!

Depending on your geographic location and the weather a waterborne can stay wet for a long time. I've also had water based primer cause rust over steel. I've used some of these primers that are very soft and porous and you probably should use a sealer over some brands.

[Phil V]

Len, I wasn't aware that water borne and water based primers were different. I've always thought they were one and the same. What makes them different ? Thanks, Phil

[Len]

In my limited education on this subject I've been told that waterBORNE is primer that has actual cells of primer floating in an H2O type of solution. WaterBASED is a mixture of the primer (or paint) with the H2O. The BORNE is like having drops of primer floating in water and as the water dries the primer bonds to the surface and with other primer dropplets. The BASED just dries leaving the solids on the surface. Also depending on the products used you can still have toxins given off by the BORNE products.

[Phil V]

I have sprayed waterborne barrier coat primer that smelled of toluene, benzene etc, the stuff smelled like normal solvent based primer.

[Len]

I have sprayed waterborne barrier coat primer that smelled of toluene, benzene etc, the stuff smelled like normal solvent based primer.

I believe the value comes in the reduced solvent needed to transfer the proper coating to the surface but I'm not sure. If you see any info on this please enlighten us.