A green house! Heating-cooling energy consumption specifications For new buildings there is legislation that specifies the minimum energy consumption standards (double glazing, insulation of exterior walls and roof, etc.) Perhaps the most important point is the correct orientation of the building so that the building can properly utilize the sun's energy from the south. For reduced losses from the walls, the masonry should be insulated. For buildings without insulation, insulation can be applied externally with excellent results Insulation of the roof if it is not already insulated. In these cases it is good to do a waterproofing before the insulation is applied to protect the building from moisture. A new option for roof insulation is the green roof which also offers insulation, waterproofing and microclimate change in the house. Double glazing offers a significant reduction in losses and can of course replace old windows. There are many choices of materials (wood, aluminum and plastic) as well as various choices in the characteristics of glass (color, reflection, thickness, vacuum gas, etc.). Windows and doors must have well-designed shading that prevents the sun from entering in summer but allows the sun to enter in winter. This is achieved by the right size of shade over the window. Thick curtains help reduce losses, especially in winter. Properly covered, it will withstand a great deal of adverse conditions, up to 30%, especially if the house is not insulated. The planting is done so as to provide shade on selected windows and walls in summer and to allow the sun in winter to warm the building after the leaves have fallen. In a well-kept building, the architect can adjust the orientation and openings (eg skylights) so that the natural flow of air cools the house. This is usually done in combination with a small jet and / or spraying the terrace floor with water in summer. In old houses where there may be ravines under the exterior doors or windows they should be closed. There are special tires on the market that can be easily applied to reduce the problem. It should be avoided to cover the outdoor areas with cement or slabs because this will create the phenomenon of a heat island resulting in an increase in temperature in summer beyond the normal of the area.