How to Insulate Septic Tank Risers

Remove soil around the septic tank riser with the excavator. Hand shovel near the riser to reduce the potential for riser damage or dislodging the seal from the riser to the tank.

Measure the circumference of the riser and cut the insulation to this measurement with a sharp knife. If rigid insulation is used, score the back of the insulation with the knife to allow the insulation to form around the round shape of the riser.

Apply the adhesive to the insulation to the insulation and to the riser material. Be sure the adhesive is rated to bond both materials.

Wrap the insulation around the riser.

Tie rope around the insulation to hold in place until the backfill can be replaced and the adhesive cures.

Replace the excavated soil around the riser with a hand shovel or excavator. Take care to not dislodge the seal from the riser to the tank.