ceiling, sealing

Ceiling or ceiling means the overhead panels in a room, or the indoor "roof"--
The ceiling has a stain where the rain leaked in.
The garlands hanging from the ceiling look very festive.
Ceiling may be used figuratively to mean the upper limit of a thing or idea--
Many female executives claim that there is a glass or invisible ceiling, which they never rise above.

Sealing or sealing ( rhymes with ceiling ) is the present participle ( the action is happening as we speak, or we are writing about the action as if it were a thing ) of "seal", meaning to close or glue shut, or to cover with a protective coating--
I am thinking of sealing this with varnish.
I don't like sealing the envelopes with tape. Maybe we could use some old-fashioned sealing wax.

 Now that you know that, you can say--
"This product was recommended for sealing a stained or damaged ceiling."

Note--a "ceiler" puts planks on an overhead wooden framework, usually on a boat--
The ceiler is finishing up the repairs to the ship.
Note # 2--"Seal" also means an official or government stamp--
Without the state seal, those cigarettes may be contraband.
Not to be confused with seal, a marine mammal often seen in harbors--
The seal swam right up to the pier.
Note # 3--a "sealer" may mean someone who hunts seals--
The sealer will sell the seal skins when he catches a seal.
Note # 4--"Sealant" is a product used to give a protective coating to a surface--
He bought some driveway sealant at the hardware store.
Note # 5--"seel" is an unusual word, meaning the temporary blinding of a falcon during training--
He thinks he can train the falcon better if he doesn't seel him.
He has put off seeling the falcon.