Wednesday 15 December 2010

Spray Painting - Paint Problems

This is a guide provided by one of our trained technicians here at Autopaints Brighton.....

Q:The item I have spray painted has a white and cloudy finish.
A: This is called paint Blooming normally caused by cold or damp conditions, the gases used as propellants in aerosol paints will make this problem worse, also cheap grade thinners, blooming is normally associated with Cellulose paints.

Q: The paint finish has a crackling effect almost like it has paint stripper on it.
A: This is caused by the original paint finish not being compatible with the paint you have just applied, a very common problem when over coating Synthetic paints with Cellulose or some 2 pack products.

Q: The paint finish has tiny air blisters just under the surface.
A: This is called Micro-Blistering, causes are cheap thinners or paint contaminated with water or oil, if using an air compressor it can be water/oil in the tank and airline. Another cause can be solvent entrapment, to much paint applied without leaving the correct drying time between coats. Micro blistering can occur several months later, normally when the weather gets damp.

Q: The paint finish has cracks at random almost like an earthquake.
A: This is called Crazing, the most probable cause is to many paint applications, normally found on bonnets and roofs of cars. Crazing can also be caused by incompatible paint products or incorrect re coating times. Constant use of car washes can also cause crazing.

Q: The paint finish has small craters in it, like fish eyes.
A: This is called silicone, caused by many products the most common is silicone sealer or spray near your work,WD 40, furiture polish, silicone spray, parrafin heater etc. Siliconing is worst in cold conditions, always de-grease your work and apply a very light first coat to help avoid this problem.

Q: The paint finish is lumpy almost like an orange peel.
A: The orange peel finish is caused by under thinned paint of spray pressure is to low.

6 comments:

  1. looking for Paint Sprayers and Paint Supplies to paint surfaces?
    With 10 years of experience building and perfecting the highest quality
    equipment and supplies, http://www.pro-paint-sprayers.com/ has the solution
    you're looking for.

    ReplyDelete
  2. Thank you for sharing. Its informative and full of information.
    Airless Spray Gun

    ReplyDelete
  3. Really a nice post..very valuable information. Thanks for posting.
    We are specialized in providing top quality auto body repairs, including Ford Aluminium, Paintles Dent Removal, 4 wheel alignments, glass repairs and replacements, and automotive painting.
    Winnipeg Dent Repair
    windshield chip repair winnipeg
    MPI Accredited Winnipeg

    ReplyDelete
  4. Hello,

    Your Blog is so impressive and very informative. Thanks for sharing great Information.

    Roof Spray Painting | Commercial Painting

    ReplyDelete
  5. Great post! I'm a little bit late to share my experience of shopping With Autoparts-miles I ordered an Used Engine for my old car on my friend suggestion. Where I got 25% off on my purchase. Now my cars performance is very smooth. used engines

    ReplyDelete
  6. Thank you for sharing valuable information, which is helpful for me to learn more about automotives. I would like to share my experience with Autopartsmiles site. It provides the best Used Engines for sale in USA up to 25% off on purchases. I bought one from it. My experiences with this site is very comfortable.

    ReplyDelete