My buddy installed a new tile floor in his bathroom - Mannington Perugia
porcelian tile.
It's a very hard surface porcelain tile. Home Depot book on laying tile
states porcelain
tiles needs to be coated with a penetrating sealer before applying grout.
He called the
mfgr, Manninton, but did not get a direct answer. The Mannington website
did not have
any information on applying grout. Should he apply sealer to the tiles
before applying grout?
Should I post this message to another newsgroup?

Thanks,

Mike