The best self storage on Vachon-Maury is at Island Security Self Storage in Vashon, Washington. Here, youâ??ll find self storage features that were designed for island living including climate controlled storage units and boat storage. Visit our Vashon self storage facility and you can also take advantage of drive-up storage units, wide driveways for RV owners, gated access, individually alarmed storage units, moving supplies, business storage, package acceptance, and online bill pay. Island Security Self Storage in Vashon is home to a wide variety of storage unit sizes including seldom seen options like extra small 2x2 storage units and extra large 10x100 storage units that youâ??d be hard-pressed to find elsewhere in Vashon.