The location and set up of a radiator can increase or reduce the risk of dampness and mould.

Heat needs to be balance, across the property and over the course of a day.

Top tips – radiators

  1. Ideally radiator should be placed on an external wall, into a bay or under a window, below a short curtain or shutter, so as to improve the balance of heat.
  2. Radiators are feed warm water in a series. The first radiator is the warmest, becoming colder for each successive radiator. To balance out the heat, use a laser thermometer to measure each radiator, and turn down the radiators at the start of the series, so as to ensure there is a balance of heat across all radiator. Note normally the top floor is heated first.
  3. Avoid placing radiotrs on side walls, they should be place on external walls.
  4. Avoid allowing long curtains to stop the movement of warm air to cold external walls.
  5. With underfloor heating, make sure that it comes on when the remaining heating system comes on (otherwise there will be a risk of condensation and mould).
  6. Ideally underfloor heating should go all the way to the edge of a wall, where it does not there will be a risk of condensation and mould.
  7. Make sure to have some night time heat so that walls don’t drop below the dew point typically 12°C in winter.
  8. Taking into account the temperature difference between the thermostat and cold external wall.
  9. If you choose not to heat a room, then as an alternative close the door and either open a window, run an extractor fan or run a dehumidifier continuously draining safely away.

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