I need advice on painting a steel door that goes to my garage. Do I need to use exterior paint?

This door is in my laundry room going to the hot garage. It was installed by a handyman and never painted. Do I need to prime this door with Kilz? The door is already a dull white. Do I use exterior paint because of the heat of the garage? Thanks everyone for your help.

assuming this door was never painted, you will need to prep the surface, and here’s how. Take some steel wool, about grade #2 and score the door all over. Don’t worry about the directions you go over it with. You want to develop some shallow scratches in it everywhere and give the primer coat some adhesion surface, expecially along the vertical side that has the lock and doorknob. Now a good primer would be the oil based Kilz. You can apply with roller, sponge brush, whatever. Let that dry completely and then apply an oil-based paint thinly, with a roller or cheap throwaway brush. Let dry, which will take a while, maybe 8 hours or more inside your garage. Then, apply another coat. This will make the door washable, as you usually get your hands dirty in the garage, as well as hold up to the temperature flucuations and high humidity levels usually found in garages. Let the second coat dry and you should be good to go.

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2 Responses to “ I need advice on painting a steel door that goes to my garage. Do I need to use exterior paint? ”

  1. lorenzo says:

    assuming this door was never painted, you will need to prep the surface, and here’s how. Take some steel wool, about grade #2 and score the door all over. Don’t worry about the directions you go over it with. You want to develop some shallow scratches in it everywhere and give the primer coat some adhesion surface, expecially along the vertical side that has the lock and doorknob. Now a good primer would be the oil based Kilz. You can apply with roller, sponge brush, whatever. Let that dry completely and then apply an oil-based paint thinly, with a roller or cheap throwaway brush. Let dry, which will take a while, maybe 8 hours or more inside your garage. Then, apply another coat. This will make the door washable, as you usually get your hands dirty in the garage, as well as hold up to the temperature flucuations and high humidity levels usually found in garages. Let the second coat dry and you should be good to go.
    References :
    former paint contractor

  2. lar says:

    Its already primed with steel primer. You can use interior latex if you want to. It never gets any of the weather.
    References :

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