Paint thinners are used when a thinner mixture of paint is needed to work with, such as for spray painting or to counteract paint thickening as a result of hot weather or tins being left open. (Read our How to Store Everyday Household Paints)
Paint thinners can also assist in the removal of oil-based paints from brushes, rollers and equipment.
It's always good to have some left over paint on hand for touch-ups or repainting down the track.
For everyday household paint, it's best to store any tins in a cool/dry area out of direct sunlight or freezing temperatures. If tins are opened, clean the lid and rim of the tin then place a piece of plastic (glad wrap is fine) over the top of the tin, then hammer on the lid firmly
The level, type and direction of lighting can all affect the tone of a paint colour once applied to a surface and can vary significantly compared to sample cards. Identifying each of these is the first step when considering which paint colour to choose and also which paint finish is best.
If you're planning on switching from an oil based or water based painted surface to the alternative, it is critical to always ensure the relevant primer or undercoat is applied to the surface before applying the new paint base.
Switching between the two without including this step will result in paint not adhering to the surface and / or beginning to peel off very quickly after application.
It can be a daunting task trying to figure out which paint base to choose, especially as the decision can have major implications on the overall finish and longevity of the paint. Applying the incorrect paint base for a certain environment can result in paint bubbling, chalking and cracking very quickly.