Standard Attic Insulation Width

Batten insulation is available to fit all three spacings but not all lumberyards stock all three sizes.

Standard attic insulation width.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Basics of faced fiberglass insulation from r 13 to r 19 r value is a standard unit of measurement for determining among many things how effective your insulation will be. Insulating attics is rather straightforward but keep in mind these two important factors. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.

Measure the area needing insulation. Insulation level are specified by r value. This type of insulation is ideal for attics with standard spaced beams and joists. If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating.

If it s a standard fixture which typically has a cylindrical metal can projecting up into the attic do not allow any insulation to contact the fixture. Measure the length and width of the area you need to insulate. Striking a perfect balance between too little insulation and too much insulation will keep you and your family warm throughout the winter. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

First be careful when insulating around recessed light fixtures. R value is a measure of insulation s ability to resist heat traveling through it. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches.

Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. Multiply the length times the width to determine the square footage of the space. Batten sizes the correct batten width should be inch wider than the width of the stud space.