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How to Install Insulation on Your Cold Water Tank

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An uninsulated cold water tank in your attic is likely to freeze during cold weather causing damage and water leaks. Follow our simple guide to insulate your cold water tank.

Step 1

Preparation

Preparation

We recommend using a cold water tank insulating kit, especially if you have previously fitted a high level of insulation with no success. The insulated panels generally come as two pieces; one long piece to pass around the water tank and another smaller piece which covers the lid. Wear protective gloves, eyewear and a dust mask. Fibreglass insulation can cause respiratory and skin irritation so it is important to try and avoid disturbing the insulation as much as possible. Lay a board down over the insulation so you can kneel down comfortably beside your work area.

Step 2

Wrap Jacket around Tank

Wrap Jacket around Tank

Unroll the jacket, shake lightly and allow a few minutes for the insulation to expand. Wrap the jacket around the tank, starting at the centre of one of the short sides. Make sure all sides of the tank are covered.

Step 3

Tie Jacket

Tie Jacket

Loosely tie the jacket using the ties provided in the kit. Make sure the ties are evenly spaced one third from the top and one third from the bottom of the tank.

Step 4

Cut Tank Lid Insulation

Cut Tank Lid Insulation

Place the short panel over the tank lid and using a scissors, cut the insulation to allow entry of vent pipes (if fitted).

Step 5

Seal Edges

Seal Edges

Use duct tape to seal the edges all around the insulation.