This eliminates thermal bridging which is the energy lost through wall studs.
Most efficient roof insulation.
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The boards provide highly effective insulation for your loft space and can also be decorated over.
When comparing types of insulation you should remember that they re measured in terms of their resistance to heat flow indicated by r value choosing the right insulation type can vary depending on your needs and your desire to be green.
Sometimes however insulation isn t enough.
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But your state s energy office or local utility may offer product rebates discounts or other financial incentives for insulating.
The panels provide a continuous energy efficient surface.
Insulating boards are just one of the many types of foam insulation.
1 cool your roof cool roofs are lighter in color than traditional black asphalt or dark wood shingles and save energy by reflecting light and heat away rather than absorbing them.
It lasts for more than 40 years and should pay for itself many times over in energy bill savings as the cost of loft insulation is comparatively low.
See a state by state directory of such programs here.
There are many factors to consider and every one of them can make a difference in how much money you spend.
Most federal tax credits for weatherizing your house and boosting its energy efficiency expired in 2011.
This roof type can be much more expensive to implement than other efficient roof options so you should carefully assess your property and consult a professional before deciding to install a green roof.
Green roofs also provide insulation lower the need for heating and cooling and can reduce the urban heat island effect.
If you re wondering what the most efficient roof insulation material is you re not alone.
Attics generally require an r value of r 35 to r 45.
Consider using spray foam insulation as well to seal smaller cracks and gaps.
You ll also need to prevent hot air from leaking out of the attic through unsealed cracks roof vents windows or chimneys.
This is known as the albedo effect and many studies have documented significant energy savings from simply lightening the color of a roof.
Insulation level are specified by r value.
How much to buy.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
What s the most efficient roof insulation material.
And there s even more good news.
So fitting insulation in your loft attic or roof space is a great way to improve your home s cosiness factor.
R value is a measure of insulation s ability to resist heat traveling through it.
Installing high r value insulation in your attic will create a barrier to prevent the heat or cold from escaping thus making your home more energy efficient.
The studs conduct more heat than the insulation between them.
The higher the r value the better the thermal performance of the insulation.
Measure your attic s square footage.