What to know about loft insulation will, first of all, involve understanding that a home can suffer a great deal of heating or cooling loss through its loft, or attic. When a loft isn’t sufficiently insulated, precious warm or cool air in a home — created by some form of heating or cooling system — will eventually dissipate or radiate away from a home quicker if the home isn’t adequately insulated. An adequately insulated loft helps prevent this effect.
In this new, green, era it’s more important than ever that homeowners look at their homes with an eye towards improving a home’s ability to retain the warm or cool air that’s been generated. The less often a heating and cooling system has to run, the lower a home’s energy burden or cost will be, in other words. When a home has been sufficiently insulated in all the right places (especially in its loft and its walls) it always uses less energy.
Insulation in a loft or attic (as some people call it) can be one of the best and most efficient methods for generating almost-instant energy savings in a home. For example, a spray foam type of insulation — which is rated very highly by home heating and cooling experts for its insulating capabilities — comes with a very high R-value, which is a measure of thermal resistance. The higher the R-value, the better the insulation is at resisting heat loss.
One can see, then, that it’s important to have the right kind of insulation, with the highest R-value possible. That insulation will help to prevent the loss of valuable warm or cool air in a home, generally speaking, and when a home doesn’t constantly have to run its heating and cooling system to replace or replenish warm or cool air, the less energy it is that’s expended.
One of the prime culprits in a home when it comes to the loss of warm or cool air is a poorly-insulated loft. A well-known fact of physics is that warm air tends to rise while cool air doesn’t. A home that’s been heated will be suffused with warm air that, unfortunately, will tend to rise and then drain away through the loft when it isn’t insulated properly.
A homeowner should look closely at how well-insulated his home’s loft is, if he hopes to get a handle on and then reduce his home energy expenditures. And while there are many different methods for insulation of a loft, almost all experts recommend going with an insulating material that can thoroughly cover every nook and cranny within a loft, for one. This is why insulation that can be sprayed, like foam, seems to work very well in terms of R-value.
When looking at loft insulation, it’s important that enough of it be put within a loft to prevent the needless draining away of precious warm air created by a home’s heating and cooling system. Generally speaking, most experts recommend at least 8 inches of insulation be laid down in a loft to get the greatest energy savings. Good insulating companies understand this, and the value of a good R-value, by the way.
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