Why does paint peel off repainted bumpers?
A: The key to having paint stick to bumpers is preparation. Bumpers are cast in a mold; the factories use silicone to get the bumpers to release from the mold. Paint will not stick to silicone. Water, Lacquer Thinner or Wax and Grease Remover will not remove silicone from a surface. The only thing that will remove silicone is isopropyl alcohol. PPG’s ONE CHOICE is an exceptionally fast system that offers incredible adhesion.
Some bumpers arrive raw plastic from the factory, some come with primer. You must first determine if the bumper is primed or raw by sanding. If the bumper is primed and you break through the primer, you must treat this area as a RAW PLASTIC procedure.
Follow this link for procedures on refinishing bumpers.
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The insurance Companies want me to blend the Clear on a sail panel. Is this covered under the PPG Guarantee?
A: To meet the PPG Lifetime Paint Guarantee you must use quality material and do a quality repair. According to the PPG Training Manual, Clear must extend to the end of a panel for the guarantee to be in place. This information is available in the PPG Training Manual or upon request.
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When doing a small repair, like on a bumper corner, the color never seems to look right even though it should match. Why doesn’t the repair look right?
A: Most Technicians use a full size gun on a small repair. The metallic or pearl creates a “Halo” at the edges of the repair area. This halo usually appears as lighter silver and painters want to darken the paint. Now the color is wrong and the silver is still there. The proper procedure is to use a Mini-Jet that puts out less material in a smaller pattern. This will eliminate the halo for a perfect blend. This Mini-Jet technique also works well for troublesome blends on large panels.
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Why do you always say “Slower is Faster”?
A: The job of a reducer is to get the Primer, Sealer, Color, and Clear from the gun to the panel, than we wait for it to flash off the panel. If we use a reducer that is fast, for the shop conditions, we can trap the reducer under the top layer. As the reducer comes out, it causes Die Back and can cause Solvent Pop if the top layer of Clear has skinned over. The trick is to slow down the reducer, this way the top layer stays open and the solvents can escape. The Clear will buff better and cleaner as the solvents are not still trapped under the Clear, and the shine will hold. Slower on one day results in drier paint the next day. Match your reducers according to the temperature and airflow in the shop.
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What is the best Spray Gun to use?
A: The best Spray Gun to use is the one you like best. Make sure the Needle/Nozzle/Air Cap size match the material you are using. This information can be found in the Product Bulletins. After that, try before you buy to be sure you have the spray gun that works best for you.
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Why do a quarter panel and a bumper cover look different even if they were painted at the same time?
A: Different materials evaporate solvent at different rates. Solvent evaporates differently on plastic than it does on steel. Also, plastic holds a greater static charge than steel; that is why the hair on your arm stands up while you wipe a cover. There are 4 ways to eliminate or decrease this static charge.
- Wipe the cover, in one direction, with isopropyl alcohol.
- Use Jun-Air Quads Ionizing Bar
- Hand held Blow Guns with a Radioactive Charge
- Waterborne Paint eliminates static
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Not sure about Waterborne Paint? Here, the most common waterborne FAQ’s are answered. |
Why Waterborne at all?
A: 90% of vehicles produced today are painted in Waterborne from the factory.
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Can I use EHP for a Touchup Bottle? Will it wash off?
A: Waterborne as a Touchup will wash off day one of application. It will scrub off day two. It will adhere completely by day 3. As waterborne has a six ounce minimum requirement to mix, Touchups must be taken from the mix.
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If I paint a car in water and it comes back at a later date to be repaired, will the waterborne basecoat wash off that I applied earlier when I wash it?
A: No, the basecoat is completely cured and will not wash off.
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Do I need special Sealers, Primers and Clears?
A:The OTC has mandated the use of lower VOC products by January 1st of 2012. This information can be found at www.otcair.org . Until that date, compatible products that we are currently spraying can be used under, and over the waterborne basecoat. After January 1st of 2012, new lower VOC Primers, Sealers and Clears will have to be used.
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Are the clears, primers and sealers special because they are a lower VOC?
A: By January 1st of 2012, Primers, Sealers, Basecoat and Clear coat will have to be changed to a lower VOC product. All these products are in place in California. We have had waterborne EHP basecoat in shops for over two years. Shops are beginning to try the new lower VOC Clear, EC700 One Visit Clear, with great success. We will be changing everyone to the 2.1 VOC primer by the end of the year. We have begun to move towards lower VOC sealers as well. Soon we will have a waterborne clear coat as well.
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Do I need new guns?
A: Waterborne likes a small needle/nozzle of 1.25. Most likely, your current gun can be changed to a 1.25 and “conditioned” to use water. In this way you can still have more than one paint gun without buying a new one.
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What are the equipment requirements for Waterborne?
A: 15 HP compressor, dry air (dessicant), HVLP fittings, 80CFM of air movement in the booth, Water Gun Washer, and a dedicated Water Spray Gun. If the booth does not have the required air, a supplementary system will be required. This can be hand held driers or corner booth units. However, each shop must be evaluated on an individual basis.
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What are the Hazardous Waste requirements?
A: Every shop in MA with EHP must have an individualized TCLP test to verify that their waste and filters can be thrown out. The TCLP test results will be used to comply with the Area Source Rule from the EPA due January 11th of 2011.
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How long do I have to wait to tape to Waterborne Basecoat?
A: Using EHP, 5 minutes.
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Can I sand Waterborne Base?
A: Absolutely, in fact as soon as the product flashes it is dry so it can be sanded immediately.
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How do I match Waterborne?
A: EHP has a complete deck of Waterborne Spray outs. Unlike some competitors, the Spray-outs are actual Waterborne EHP for a perfect match.
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Is EHP a “Stand Alone” system?
A: Unlike some competitors, EHP is a complete Stand Alone system, including Underhood Colors.
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Do I need a new booth to spray Waterborne?
A: Each shop needs to be evaluated individually. If you want to paint the maximum amount of vehicles in one day, the requirements are different than if you only want to paint 3 a day. Spray Booth air flow is a large determining factor. We have all the equipment to test your booth.
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Why is Waterborne paint being mandated in California, Canada, and here?
A: Solvents and reducers are Volatile Organic Compounds, or VOC. VOC’s mix with sunlight and make ground level smog. If you have ever been to LA, you know about smog. When spraying we create VOC, a non-renewable by product. The by-product, or solvent, in PPG waterborne is water. When we are waiting, the one minute, for the waterborne to flash, we are returning water to the environment. Also, there is NO Hazardous Waste being created. Basecoat contains the most solvent of all the products used in the repair process. PPG’s Envirobase HP is being used by the world’s largest dealership, Longo Toyota in El Monte California. It has increased their throughput 16% while reducing all the chemical hazards that go along with solvent.
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Should I wait until Waterborne is mandated by the state before I use it?
A: The OTC has mandated the use of low VOC products by January 1st of 2012. We have had EHP Waterborne in shops for well over two years. As the OTC mandate requires that you must change primer, sealer, color and clear, we suggest that you make the change sooner rather than later, this way we can change one element at a time, starting with basecoat, rather than changing everything at once. Also, if there are equipment upgrades to be made, you can become aware of them now and plan on your changes. As is evidenced in California, 80% of shops will wait until the last minute to change. PPG, and all others, cannot change every shop from Virginia to Maine successfully in December of 2011. Every shop we have changed has said they would never go back to solvent.
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