4mm Cork Roll – Medium Thickness Cork for Bulletin Boards & Projects

The 4mm cork roll sits between the popular 3mm and 6mm sizes — offering a step up in pin-holding depth for bulletin board applications without the added weight and cost of thicker options. At approximately 5/32 inch, this thickness is a strong choice for wall-length DIY cork boards, behind-the-door cork panels, and craft project surfaces where standard pushpins need to seat firmly without bottoming out. BangorCork's 4mm roll is flexible enough to work around minor wall imperfections and cuts cleanly with a utility knife. It is a popular specification for classroom bulletin board resurfacing, home office project walls, and art studio pin walls where a medium-duty surface is needed. Made from 100% natural cork, sustainably sourced from Portuguese cork oak forests. Rolls are 4 feet wide and available in multiple lengths. Self-healing surface resists pin-hole buildup over time.