So how do you define what is really an exterior paint? There is not a set of rules that can tell you exactly what defines an exterior paint. 

There is nothing to prevent you from using an indoor painting on the exterior of your home. It's just that the paintings that are designed for outdoors will be more appropriate because of the way they are made. You can also hire professional painters from companies such as https://diamondpainting.com.au/exterior-painters/.

You can break all the household paints in two basic categories – they are either solvent-based or water-based. Solvent-based paints covers all types and your oil alkyd paints. Water-based paints tend to fall under the latex paint label.

Water-based paints are easier to apply and easier to store and subsequently also tend to not be as rough on your wallet than solvent-based paints. 

The main problem with the use of water-based paint on the outside of your home is the lack of something very, very important. That little something is called chalking.

Chalking is a process where the paint door slowly turns into a kind of dust – like chalk. Like the exterior of your home A mixture of sun and rain, this chalky dust naturally removes and your exterior paint finish is always fresh.

The main problem with the use of solvents or oil based paints is that they take much longer to dry to the touch and are more difficult to implement. 

Also another annoyance is that if you have not masked the room well everything that drops of oil-based paint on it will be very difficult to clean – this includes your rollers and brushes.