Join Date: Sep 2008
Location: Victoria B.C. Canada
Thanked 111 Times in 102 Posts
Rep Power: 10
It can be part of an insulation system, either with air above or closed cell foam of one type or another. It also hides the inside of the cabintop molding, often roughly finished as most were designed to be covered during manufacturing. Also hides the fastenings of deck mounted items and protects you and yours from hitting your heads on them.
Living aboard in Victoria Harbour