There is no simple answer to the question: ‘how much insulation do I need?’ First of all, it depends on where you live. And it also depends on whether you are installing insulation in a new house, or if you are trying to squeeze insulation into an existing house instead.
The best way to answer the question “how much insulation do I need” is to consider R-values. These determine a material’s effectiveness at retaining heat.
Still confused? Let us explain R-values and their importance in greater detail…
Why R-values Matter
Every insulation product has its own R-value. The R-value is always displayed on the packaging.
Now, measuring and calculating how much insulation you need can be tricky. However, there are some general rules you need to follow.
In general, people living in colder climates need insulation with higher R-values, while those in warmer climates need materials with lower R-values. According to the Department of Energy, these are the R-values you need to follow:
– For hot climates, you need R-value of 30
– For cold climates, you need R-value of 49
– For moderate climates, you need R-value of 38
Where Should You Insulate?
How much insulation do I need is not the only question you need to answer. You also need to consider which areas of your home need insulation.
For starters, you need to insulate the walls. Walls are your first line of defence against heat and cold.
Roof insulation is your next challenge. Just remember, roofs need to be sealed prior to insulation. When you consider roof insulation, always look for a professional who will make sure there are no cracks and holes.
Some not so familiar areas that also need insulating include: the garage doors, windows, and side doors.
Last, but not least, your crawl space requires different insulation, depending on whether it is ventilated or not. Make sure to remove all moisture prior to installation.
Again, a professional will ensure that there’s no moisture, which inevitably leads to mould.