A common question often asked by readers is about the types of attic insulation. While the focus will be on the types of attic insulation, the same forms of insulation are just as suitable for roof, floor and walls as well. And even though there are many different kinds, there are only three major types of insulation that matter when it comes to insulating an attic. So we’ll be analyzing them alone in this report.
Whenever you consider a form of insulation, there are several questions that crop up. Is this the best form of attic insulation? Can I find the right person to install it for me (or can I do it myself)? Will it fit my budget and serve my needs? Each of them will be dealt with for the three common types of attic insulation.
Batt Insulation for attics comes in big chunks of interwoven fiber. When they stick to each other and get entangled, these fibers create effective insulation. Batt insulation is made of fiberglass or cotton. Both are almost identical in terms of insulating efficiency.
Batt insulation has one major drawback despite providing reasonable insulation. It does not seal off all the spaces well. Gaps and nooks in the attic may not be correctly filled up with batt insulation because it doesn’t easily get deployed beneath ceiling joists and in nooks and corners. As a result, these spaces remain uninsulated and are potential heat leaks that result in loss of heat in winter and seepage of heat into air conditioned living areas during summer. Batt insulation is therefore relatively inefficient in this regard.
The primary reason for this is the difficulty in installing batt insulation to fit into every niche and corner of the attic. Invariably there are spaces beneath and in between ceiling joists which are unsealed when batt isn’t cut properly. Insulating the spaces around wires, exhaust fans and recessed lighting is also difficult.
The next type of insulation is blown insulation for attics. This is another popular type of attic insulation. Blown insulation is made of smaller pieces of batts. It is installed by the process of blowing in the insulating material with a fire-hose type of device. A insulation machine outside mixes up the chunks. The air is generated under pressure to blow the material into the attic.
Blown attic insulation made of cellulose or fiberglass provides very good insulating capacity and both have comparable R values when installed at depths of 3 inches or above. Cellulose is made from recycled newspaper and is a better green solution. Fiberglass is derived from sand. Both are more effective than batt insulation.
Blown in insulation is one of the best types of attic insulation because it fills the attic nearly completely. You would hardly be looking down into the ceiling drywall. The blown in insulation offers a great and full insulation which reduces heat loss and keeps the energy costs of your building in check.