Insulating an attic is a relatively simple home improvement project, and finding a suitable contractor isn't usually difficult as many general construction and remodeling companies offer insulation services. In colder climates, building codes require attic insulation to have a higher R value than in warmer climates. Loose fill insulation is made of the same material as blown fill insulation, but it costs more in labor to install. Structural Insulated Panels (SIPs) are large panels (4 feet x 8 feet and up to 8 feet x 24 feet) that are mainly used in new construction, but are sometimes installed on beams when an attic is converted to a conditioned space.
Reflective insulation is a radiant barrier attached to a thin thermal layer that provides an R-value of R-3 to R-21 when combined with a dead air space during installation. Installing insulation in an attic is easier than many home renovation and upgrade projects, but it can still be complicated and (in some cases) dangerous. You should also take into account the possibility of hiring a professional to remove old insulation. Doing it yourself can be a hassle and, if it contains asbestos, it could be dangerous and illegal.
Spray foam insulation, when properly installed and not disturbed, can last up to 80 years on the attic floor and up to 30 years on the bottom of the roof covering. If the attic has little or no insulation, or if the existing insulation is damaged and needs to be removed, more new insulation will need to be added, resulting in a higher cost. Attic insulation that covers the recessed lights of the cans or that is too close to a chimney can cause an attic fire. Not every type of insulation is suitable for every attic situation, and different types can significantly affect the final cost of the project.
Blow insulation is one of the least expensive methods, and its installation involves the use of a blower that distributes shredded paper, cellulose, or rockwool fibers in an even layer between the beams of the attic floor or over existing recessed or block insulation. The labor cost to install attic insulation will vary depending on the location of the house, the complexity of the project, and the type of insulation. The type of insulation is one of the most important variables that determine the total cost of the project, and you can choose from several materials. Inadequate attic insulation leads to higher heating and cooling bills than necessary and can have a negative impact on the selling appeal of a home.
Adding insulation to the attic will result in a more comfortable home, lower heating and cooling costs, and if you are going to sell your house, it will be considered an advantage.
