Here are two US methods of dealing with WC cistern condensation:
1. Thermal Safe Toilet Tank Liner kits $18
2. Adjustable anti-sweat valves for toilet tanks $40
This device pre-mixes hot and cold water to room temp. before adding to the tank. 1/2" thread.
It would help to have a small cistern and/or a dehumidifier.
Dont use fluffy tank covers, they smell and create mold.
1. Thermal Safe Toilet Tank Liner kits $18
2. Adjustable anti-sweat valves for toilet tanks $40
This device pre-mixes hot and cold water to room temp. before adding to the tank. 1/2" thread.
It would help to have a small cistern and/or a dehumidifier.
Dont use fluffy tank covers, they smell and create mold.