The attic needs proper insulation because it absorbs much of the outside temperature in order to keep a home comfortable. During the day, the sun beats down on the roof, and without proper insulation in the attic, the heat will penetrate the house.
There are various insulation materials you can use for your attic. The three most popular options include:
- Batts – These are large insulation pieces held together by interweaving fibers and adhesive binders. Batts are either cotton or fiberglass, which are both good insulating. Many homeowners tend to favor cotton batts which are made from recycled denim materials. The downside of batt insulation is its inability to fill up a whole space, leaving gaps which could act as entry points for warm or cold air.
- Blown – Blown insulation involves the use of a blowing machine to spread small chunks of insulation across an intended area. Cellulose and fiberglass are commonly used for blown insulation. Both materials have the same R-values. Blown insulation is often considered superior to batt insulation because it can fill an area without voids.
- Spray foam – This insulation material is sprayed to form a continuous barrier in the attic that can extend into corners and along contoured surfaces. The foam is made by mixing liquid components which react to create foam. Spray foam could either be open cell or closed cell. The advantage of spray foam insulation is its ability to envelop a space entirely, extending from the attic floor up to the roofline. Spraying both the attic floor and the roofline will provide better insulation for the house. The downside of spray foam insulation is the cost, as it is the most expensive of the three types of attic insulation.
Though these are the most common types of insulation, there are other variations. Your choice will depend largely on your personal preference and your budget, but don’t put off getting attic insulation. It is essential for maintaining a temperate environment in your home and keeping your heating and air conditioning bills under control.