You could try the more environmentally friendly strippers eg.
Strip paint off metal garage door.
Look for spots where the paint is peeling and use the paint scraper to remove the paint.
Homestrip p v remover would certainly be the safest way to remove it.
How to fix peeling paint on a steel garage door 1.
Spread the wood filler and allow it to dry.
Scrape all the chipped bubbled and peeling paint off the steel garage door with a rigid metal putty knife.
You can also use a nylon brush to scrub off the debris.
Spray down the door with a garden hose to remove any dust dirt grime and the chipped off paint or graffiti from the garage door.
Apply paint thinner or stripper and.
Hand sand small spots or leave them and sand it while sanding your door.
Apply paint thinner to the painted area with a paint brush.
Sometimes the paint will be free of the metal but has yet to crack.
Here s the link to the projects page on home strip and there is a link to purchase in the tool store.
After it s dry use a paint scraper and scrape off any paint or graffiti that is still there.
For cracks in the door scrape or sand off any rough or raised edges.
Let the door air dry after spraying it.
Sand off any rust.
For this reason you will go over the door with a paint scraper in areas with no visual damage.
Sand the areas with medium grade sandpaper where the paint has been removed to lightly roughen the surface of the.
Examine the steel garage doors carefully.
Get your good old plastic wrap yes lunch wrap glad wrap or the equivalent and lay this down over the stripper extending a small way past the ends of the piece.
Use a heat gun to heat up the paint until it begins to curl and scrape it away with a scraper.
Pressure wash the area on a setting of 80 psi.
Be generous and put a good thick layer onto your item.