seep through (something)
To soak or permeate completely through something, reaching or escaping through the other side. There must be a leak in one of the pipes, because water has started seeping through the walls. The coffee I spilled in my bag seeped through every single one of my books.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
seep through something
[for a fluid] to permeate something and escape. The oil seeped through the gasket onto the ground. Some water seeped through the ceiling, ruining our carpet as well as the ceiling.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.