My uncle is a painter and he said you will probably have to repaint ceiling but first user a Kilz primer to cover the oily stain then paint ceiling.
If the stain is dry and the ceiling, if papered, is still sound, then try using a "stain-blocker" paint. Most paint manufacturers produce such paints.* Do not use a water-based paint, such as emulsion or acrylic, because the stain, even though dry, will still bleed through.It is important to remember that two coats may be necessary: the first painted across the stain in one direction and, after that has dried, another coat painted at right angles across the first coat.Do not use any finishing coat until all traces of the stain have been "blotted out" by the stain-blocker. Allow to dry thoroughly and then finish off with one or two coats of ceiling paint i.e. emulsion or acrylic. * Dulux and International Paints(usual disclaimers apply!) are effective.
depends on if you want people's eyes to be drawn to them or not. if you want the beams to blend in, paint them the same color as the rest, if you want it to make a statement, paint them a different color. the more different the color, the more it will stick out.
What kind of dried paint? What is under the paint on the ceiling? ....on the metal?
Paint the ceiling first. Work top down.
Paint stays on the surface and stain soaks into the the surface.
If you paint over the "weathered" paint, it will chip and cause the stain to come off. Also, the stain needs a clean sanded surface in order for the wood to absorb it. Otherwise, there is no reason to use stain.
The Sky
Yes, in fact it is even more important to mix stain, than paint as the pigment tends to settle out easier with stain.
You will need to paint the stain with a pickling gel. It is very rough, but it will get the stain off.
Kilz then paint. If the ceiling is damaged you must replace the damaged board then re-stipple/popcorn the repair (hard to match!). No major damage? Kilz then paint! Y-THINK-Y Try this if the water stain does not require replacing sheetrock first. Get some dry popcorn mix (powder and popcorn pebbles together). Add water to measured amount (experiment). Pour mixture into kitchen strainer (the kind you use to strain water off cooked spaghetti). Of course, first put strainer atop empty paint can! The resulting gray liquid that drains off (don't be alarmed that it doesn't look as whiteas your ceiling) can be used like paint to cover the water stain. Roll this liquid onto the ceiling using a 3/4" nap roller. When it drys back it will match your sprayed ceiling if the popcorn formula was the same. I just did it in several different spots and the result was excellent!
Ensure that you are putting enough paint on the surface, then roll or spray the ceiling all in one direction. Always work to the wet paint edge and do not stop long enough for the paint to dry. If you are spraying, do two coats, one in the direction of the length, and the other in the direction of the width. If you are rolling and trying to avoid a second coat, make sure you are putting enough paint on the ceiling and then wait 24 hours. If you see marks after 24 hours, put on a second coat in the other direction, ie if you applied the first coat the length of the ceiling, apply the second coat in the direction of the width. Again, be sure to work into the wet edge so do not stop long enough to allow the paint to dry to the touch. Once you've finished the second coat, allow the paint to dry for 24 hours before judging the coverage. Another trick is to use a 100% acrylic stain kill primer instead of ceiling paint. It will cost about twice as much but it is as close as you can come to a guaranteed one coat ceiling paint. Since the ceiling is not subject to wear and tear, there is no need to top coat with a paint.