Clean area thoroughly with soap and water solution and wipe completely dry. Use alcohol pad to prep the tape application area and let dry. Wait until after Tailgate Seal is installed before applying very firm pressure, to secure adhesive bond. If necessary, Tailgate Seal can be removed and repositioned prior to applying very firm pressure. Pictures shown below are for the left sidewall and tailgate gap.

 STEP 2: ATTACHING TO SIDEWALLS 

Start 1” (2.5cm) below truck bed floor and attach seal to the rear corner edge of the left sidewall extension (FIG 2A). Continue up sidewall, approximately 8” (20cm) to rubber stop, flush seal to bottom of rubber stop and cut to fit (FIG 2B). Continue up from the top of rubber stop, approximately 7.5” (19cm) and flush seal to next rubber stop and cut to fit (FIG 2C). Apply light pressure to adhesive. Duplicate for right sidewall.

STEP 3: ATTACHING RECTANGLE SHAPED SEAL HORIZONTALLY TO TOP OF TAILGATE

Measure the distance from the sidewall to the tonneau cover. Cut this length from piece of rectangle seal and peel away liner. Position seal between sidewall and tonneau cover and flush top of seal with top of sidewall (FIG 3A ). Apply light pressure to adhesive. Duplicate for right sidewall.

STEP 4: TWO OPTIONS – ATTACHING TO TOP OF SIDEWALL OR TOP OF TAILGATE 

There are two options for positioning the Large Tailgate Seal with Taper Seal®. Use Option 1 if the inside surface of tailgate has no liner nor cover panel or choose Option 2 if the inside surface of tailgate has a liner or cover panel.

Option 1 (FIG 4A): ATTACHING TO TOP OF SIDEWALL

Measure distance from top of rubber stop to underside of rectangle shaped horizontal seal. Cut this length from piece of Large Tailgate Seal and position as shown in FIG 4A. Apply light pressure to adhesive. Duplicate for right side.

Option 2 (FIG 4B ): ATTACHING TO TOP OF TAILGATE

Measure distance from top of rubber stop to underside of rectangle shaped horizontal seal. Cut this length from piece of Large Tailgate Seal and position as shown in FIG 4B and 4C. Apply light pressure to adhesive. Duplicate for right side.  

STEP 5: ATTACHING TO TAILGATE GAP (FIG 5A) 

To evaluate the best positioning for the tailgate gap, cut a 1” (2.5cm) test piece and align the top of bulb with the truck bed floor. Stand to the side of truck and raise tailgate until bulb makes contact with tailgate. If the bulb rolls downwards, just before closing tailgate, so that you can see the tape, then seal has rolled and compressed too much. This can cause added stress to the adhesive and possible seperation. If compressing too much then invert 1” piece so that bulb side is down. Raise tailgate again and make sure no light is visible through the 1” piece. Adjust 1” piece higher or lower in the gap as needed to block the light. After determining if bulb should be up or down and how high or low, remove 1” piece and pick up one end of the continuous seal. Start at either end, peel back liner and flush to seal on the sidewall. Attach in sections, apply light pressure to adhesive should you need to reposition. Flush to seal on other sidewall and cut to fit. Apply very firm pressure to secure adhesive bond.

 STEP 6

Close tailgate. If you see light through the sidewalls, make small adjustments by removing the seal and repositioning. If there is still light then cut pieces of seal, as needed, and attach to the sidewalls and/or tailgate. Do not attach adhesive to seal. Open tailgate.

 STEP 7

After seal is in place apply very firm pressure to secure the entire adhesive bond. Leave tailgate open for 30 minutes. If the air temperature will fall below 50°F (10°C) within the next 24 hours or, if seal is attached to a spray on bed liner, then leave tailgate open for 24 hrs.