It’s the time of the year when we think of turning on the furnace heater and think about how to properly reduce gas and electric consumption. Did you know that the most culprit of cold starts from the attic?
One of most commonly-argued topics among attic insulation experts is whether fiberglass or cellulose attic insulation is better. In terms of overall performance and affordability, however, I think cellulose insulation is the more sensible choice, as this article explains.
Cellulose insulation material is essentially a recycled product. It is prepared from shredded paper and plant resins that are treated to become insulators. This fundamental difference between the two insulation materials makes cellulose a more affordable choice.
Although cellulose is made from recycled newspaper, it is not flammable, having been treated with borax. Regardless of which insulation you get, make sure it has the appropriate R-value for your climate zone. The higher the R-value, the stronger—and more expensive—the insulation. R-value will inevitably decrease over time, though, as the insulation settles.
Pros of Cellulose
- Burns more slowly
- Made from recycled materials
- Insulates better
Cons of Cellulose
- Requires professional installation
- Messy to install
- Installed damp, creating a chance for fungal growth if not dried well
Pros of Fiberglass
- Installed dry
- Simple to install
- No harmful chemicals
Cons of Fiberglass
- More expensive
- Itchy on your skin
- Settles, reducing in effectiveness over the years
However, Fiberglass insulation is more common and can be installed more easily. However, it does not prevent air leakage and is potentially flammable. Although Fiberglass insulation does not settle quickly compare to cellulose but it loses heat quickly in extreme low temperatures.
A testing had been conducted to prove this theory. You can watch this on YouTube click here. http://bit.ly/2dTisv9