Adhesive style cable holders where you cannot have roof penetration Requires Part # UC Adhesive. Use one for every 3 feet of cable. Apply the #UC Adhesive liberally to the cable holder and put in place. Allow this to cure for 12 to 24 hours before connecting cable to it. The adhesive will cure faster under wet or more moist conditions. This adhesive will have a rubbery texture like silicone caulk when dry, but it will be secure. Available in copper and aluminum.