Countless units of energy are lost from homes without proper insulation. Many homeowners are not only heating their homes, but they are also heating up the area around their homes too. This means that during cold periods, they are forced to spend a fortune on their heating bills. Scrimping on insulation during the building process will lead to extra spending on your energy bills. The type of insulation that you will require can very much depend on the climate that you live in and what other design ideas you have. If you live in a cold place, it is worth investing in loft insulation, cavity wall insulation and double glazing. There are plenty of natural and recycled materials which can be used for insulation. Alternatively, properly fitted turf roofs are excellent for keeping the heat in.