When selecting paint you want to be looking at a good quality product, the 2 for a £1.00 might be quite tempting, but you may have to use substantially more to achieve the finish you require. You will do better to go for the more expensive products with well-established track records.
The importance of proper preparation cannot be over emphasised. This part of the operation is usually not taken very seriously, yet, in reality is critical to the quality of the end result. Following most label instructions involves one or more of the following cleaning steps.
Stripping the existing coating
1. Remove the old paint coating with a good quality paint stripper like, strip and clean discs like s , and s .
2. Remove any corrosion using a good quality rust remover.
3. Thoroughly clean the area using pre painting prep solution.
Painting over an existing coating
If the previous coating cannot be easily removed, clean a small area and apply the new finish over the old. Check to see if any undesirable or unfavourable reaction has taken place. If you are happy with the test results, make sure the old paint is solid, free of dirt, silicone, and oil. Next scuff the surface using sto allow the new paint to get a good key to the old paint.
PREPARING TO SPRAY
Be sure you are working in a well-ventilated area. It is generally best to apply aerosols at a room temperature of around 20-30°C. The optimum humidity level to apply is below 50%. Painting in higher humidity can cause the paint to “blush”, a condition caused when moisture in the air condenses on the paint as it is drying.
1. Shake the aerosol thoroughly, usually, one to two minutes of vigorous shaking is required to get the contents mixed enough for applying. You will know when the paint is ready when the mixing ball inside the can begins to rattle easier while you are shaking the can.
2. Test spray. Should the cans spray nozzle be clogged, do not use a pin or a needle to unclog the nozzle, this could cause damage and ruin the spray action. What can be done to solve this problem is to carefully remove the nozzle from the aerosol can, and soak it in cellulose thinners (This will restore the spray head to its original condition). Replace nozzle using a twisting motion to avoid damage to the sealing o-ring.
3. When spraying you must ensure that you spray with your can in an upright position, and spray with the nozzle pointing towards your work. You should always maintain a proper distance between the nozzle and the item being coated. This distance is normally 8” to 12”.