Tim Holtz Idea-Ology Grungeboard Basics Plain Altered Art (Pack of 10 Sheets) Tim Holtz Grungeboard is a compressed, flexible sheet of dingy material with a debossed texture that can be painted, inked, sanded, hammered, die-cut or grunged You can even wash ink off with water and start again! The package includes 10 sheets that measure approximately 5 inches x 8 inches. Each sheet is grungeboard is approximately 1/16 inch thick.