Can someone please tell me the real difference between quality interior and exterior latex paints?
I just primed my garage walk-in door and now would like to paint it, but have no exterior paint. I have about 12 cans of interior latex paint and one of those cans just happens to be white which is what I want to use for this door. Will painting it with this interior latex paint be a waste of time?
Any comments or suggestions will be greatly appreciated.
Phillip
Replies
There are a lot of different interior paints so no way to tell.
In general, an ext paint is more flexible to handle thermal changes, and it is designed to chalk off, shedding surface to protect the layer over time. Ext paints are UV resistant, without which they will fade and crack sooner than later.
Some interior paints are not even washable so they are not tough enough for weather or for a door surface that will be rubbed and worn.
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Thanks Piffin,I know that there had to be some real difference between the two types of paint but I just didn't know what that truly was. In truth, - which I'm quite sure you figured out by now, was that I was hoping I could get buy without having to buy another gallon of paint to cover this door. Guess I'll just have to go down and get a small can and be done with it.What you said makes very good sense: flexible enough to withstand yearly thermal variations and UV resistant. I appreciate your comments and the time you took to answer my question.
Buy a quart
The awful thing is that beauty is mysterious as well as terrible. God and the devil are fighting there, and the battlefield is the heart of man.- Fyodor Dostoyevski
Good advice. Thank You.I've done that and the door is now painted as it should be with exterior paint.
Exterior paints have a midewicide, usually a mercury compound, added; interior paints don't. So there is an issue about toxicity.
"interior paints don't."Last month I was talking to my BM dealer about the new paints and asked about one in particular re mildewcides. His reply was that almost all the paints have that now. Still worth checking on an individual basis, but that old rule apparantly no longer holds true
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