Standard Attic Insulation Width

Batten sizes the correct batten width should be inch wider than the width of the stud space.

Standard attic insulation width.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. 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. First be careful when insulating around recessed light fixtures.

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. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. Batten insulation is available to fit all three spacings but not all lumberyards stock all three sizes. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

This type of insulation is ideal for attics with standard spaced beams and joists. R value is a measure of insulation s ability to resist heat traveling through it. 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. Multiply the length times the width to determine the square footage of the space.

Measure the length and width of the area you need to insulate. The higher the r value the better the thermal performance of the insulation. 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. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Striking a perfect balance between too little insulation and too much insulation will keep you and your family warm throughout the winter. Insulation level are specified by r value. Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.