How to Fix Holes in a Rusty Water Tank

Clean the Water Tank

• 1

  Empty the water tank to ensure the space around the leaky hole is dry.

• 2

  Scrub the area around the hole with a wire brush to remove all the rust and clean the space.

• 3

  Wipe the area with a microfiber cloth to ensure all dust particles and rust are removed from the space you will be working in.

• 4

  Recheck the area to make sure you have removed all moisture and dirt before repairing the hole.

Repair the Hole

• 5

  Snip the tip off the sealant, making the hole as large as you need it to be to manage the adhesive easily.

• 6

  Insert the tube of sealant into the caulking gun. Ensure it is snapped securely into place.

• 7

  Dab the sealant around the area until the space is fully covered with the product.

• 8

  Smear the sealant evenly over the affected area with the putty knife.

• 9

  Paint the area over and around the sealant once the product is dry; this is highly recommended if your water tank is located outside as exposure to sunlight and the elements can break down the sealant at a rapid rate. For water tanks inside a building, this step is optional.