| Author | Message | ||
     Sjdevil |
i am repainting an s3 tank, and like everyone else am scouring for ways to keep the paint from blistering. i recently saw rubberized paint, which itself is paintable. i was told by an automotive painter that if it is rubberized it should form a protective barrier to prevent the gas vapors from reaching the paint and bubbling it up. so i'm thinking rubberized paint, sandable primer, top coat, clear coat-thing is, i assume the rubberized paint will be impossible to sand off if it doesn't work and ruin the finish for good. any thoughts or experience? | ||
| Al_lighton |
I won't claim to be an expert on this. But, near as I can tell, the issue of paint bubbling is one of Adhesion vs VOC (volatile organic content) migration rate through the permeable paint film. The tank, sealer, primer, and paint permit some of the VOCs to migrate through at the molecular level. As long as the VOC migration rate is slow enough, or the paint layer permeable enough, or the adhesion strong enough, it won't bubble. But when the permeability is reduced, or the VOC rate is increased, the forces against the paint film adhesion increases. If the adhesion force is exceeded, a bubble forms. The old tanks letters bubbled off because the vinyl letters weren't permeable. Some of the old painted tanks bubbled because the paint adhesion wasn't as good on some tanks as others. So the rubber paint may work against you. If it seals completely, it better have stronger adhesion, or it will lift. Or not. Like I said, I'm not an expert, and this problem stumped Buell for some time, and I'm sure they studied it pretty good. Al | ||
| Djkaplan |
I had my Manta tank painted with PPG products and never had a problem with the paint bubbling. I recently had it painted again by a different painter who used Sikkens products (high end) and now have the bubbling problem. |
