If your cellar is not yet thermal -insulated or poorly isolated, then with the onset of cold weather it can be a global problem. Fixing everything is quite simple, and there is no special knowledge.
For thermal insulation, the material in the cladding is best suited, since it is easier to work with it. If there are no insulation at all in the room, it is desirable that the material you have chosen is covered with a special coating that prevents steam formation. It needs to be laid up to the ceiling, t. e. to the heated part of the house. Cut the material into panels the size of a slightly larger interval between the beams. Do not forget to leave the reserve in case of compression (approximately 3 cm. )
Cables and wiring, if they are in the basement, are usually located in casing and boxes, so you can not worry that the insulation will come into contact with them. No need to go around the places in which it is difficult to lay the insulation. Try to make thermal insulation be continuous. There should not be voids incomplete. To keep the panel between the beams, the pressure with which the insulation is clamped between them should be enough. But if the heat -insulating material is too tightly knocked over the edges of the beams, it is worth pulling strong threads across them.
Cover the floor with polyethylene. Fix it with a sticky tape, and on the edges of the room the material can be crushed with something heavy, brick, for example. Thanks to this, humidity will not penetrate the basement.
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