Tenants Handbook


D. Insulation reduces the rate of heat loss and helps raise the temperature. However, even in a well insulated house, some heating may be necessary in cold rooms with no indirect heat input.

Mould Growth If small black spots appear on the walls or other room surfaces, this is the start of mould growth. Any sign of mould growth indicates the presence of moisture. If the moisture is caused by condensation it is a sign that the level of moisture in the room needs to be reduced or that the heating, ventilation or structural insulation, or all three of them, need to be improved. The mould growth spots should be washed off and the affected area sterilised. A suitable steriliser can be made by mixing 1 part bleach with 4 parts water. For example, a quarter of a pint of bleach should be mixed with 1 pint of water. Make sure that you then tackle the cause of the condensation as recommended under “What is Important” New Buildings New buildings can take a long time to dry out and during the first winter more heating and ventilation is necessary than in subsequent winters. Excessive temperature should be avoided to prevent warping of new joinery. With certain types of concrete roofs final drying may only be able to take place inwards. So, do not use waterproof decorations (such as vinyl papers) on the ceiling unless you have been given expert advice that this would not matter. Effect of Extractor Ventilation on Fuel Burning Appliances If you propose to fit an extractor fan or otherwise change the ventilation of a room which has a gas or solid fuel appliance connected to the chimney, you should get advice from the installer of the heating appliance. This is because there may be a risk of drawing toxic fumes back from the appliance into the room.


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