WA DOT Silicoflex InstallationThis installation by WA DOT on the I-5 Interstate illustrates the ease in which Silicoflex is installed. The joints are prepared by sand blasting and cleaning with denatured alcohol. The gland is then cleaned as well. Two-part primer is mixed and applied to both sides of the joint followed by adhesive. The Silicoflex gland is then inserted and tooled, creating a smooth finish to the joint.