"wall it off" is a correct phrase and can be used in written English.
Example: The company decided to wall off the accounting department from the rest of the office to ensure privacy and security of financial information.
We mask it off, wall it off, sweep it under the rug.
The Acra was still in enemy hands, and Jonathan sought to wall it off from the city.
It is an effective way to jostle through the world and wall it off all at once.
The more you can wall it off, the more unequal you can make the exchange of information between customer and company, the more value that aggregated data has.
The company is counting on a planned Chapter 11 bankruptcy filing by a United States subsidiary, Combustion Engineering, to wall it off from rapidly growing liability in asbestos litigation.
Instead of attacking, these turncoats infiltrate the cancer and "essentially wall it off from the antitumor effects of the immune system," says tumor immunologist Robert Vonderheide of the University of Pennsylvania's Abramson Cancer Center.
In Wilde's religious allegory, an Eden-like garden withers in endless winter when the titular giant walls it off from playful children.
Indeed, the story can't know what happens next, since Mason's present-tense narration walls it off from any future from which this moment might be seen in retrospect, might be ordered and understood.
"Then we make an incision in the cyst and we just take the cyst wall, peel it off from where it's attached to the ovary, and we remove all of that".
You stick it on a wall, hang it off a Christmas tree, make a collage or frieze of paper gingerbread men, glue it to wrapping paper, attach in a scrapbook, and so forth.
If it walked into a wall, it would bounce off and retreat.
