Most male animals have different color fur to show off and attract a beautiful female. The same goes for kangaroos. Females are a plain brown, and males are a beautiful reddish brown.
it stops the air circulating
houses can be insulated in many different ways, roof insulation can be installed into attic space, you can get cavity wall insulation, double glasing on the windows, draft excluders on the bottom of doorways, all of these help to keep the heat within the house and to prevent it from being lost to the oustide environment. Walls can be insulated externally with the use of an External Wall Insulation system, full details found in "The Complete Guide to External Wall Insulation" currently available via Ebay
Cavity walls are made up of an outer wall (ie brick) and studs or concrete blocks inner supporting wall. The cavity in between (usually a minimum of an inch) is a space for air circulation and also to keep rain from getting to the outside surface of the inner wall.
insulated siding, light colors and good inside wall insulation
Exclude all draughts by making sure the doors and windows fit and sealPut thick insulation on the floor of the loft space to cover it completelyPut cavity wall insulation in place if possible or insulate the outer walls with an insulating covering.Replace the doors and windows with double or triple glazed units.If possible insulate the ground floor material.Use a condensing boiler.
a wall is a conductor
is vermiculite suitable for cavity wall insulation
There are some advantage,
it stops the air circulating
100 mm
Because cavity wall insulation traps pocket of air thus reducing convection currents. Having just air will increase convection currents.
Because cavity wall insulation traps pocket of air thus reducing convection currents. Having just air will increase convection currents.
convection
Cavity wall insulation is the addition of an insulating material between two layers of wall on the outside of a building. It reduces energy transfer by preventing heat (from the inside or the outside) from travelling through the wall to surrounding air.
Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with a porous material. By doing this the porous material absorbs the escaping water and air.
Loft insulation stops conduction and convection as the insulation which is inserted into the wall cavity prevents the particles of heat energy from traveling through the wall cavity, this stops conduction from taking place. Loft insulation also prevents convection as the cavity insulation stops the air particles from moving, therefore they cannot transfer heat and convection cannot take place.
loft insulation, draught proofing cavity wall insulation thick curtains thick carpets double glazing