Attic Insulation Fire Rating

Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Attic insulation fire rating.

The fire rating system for insulation is basically how long the material can withstand a standard fire resistance test. Fireproof insulation materials come in five primary forms. Insulation level are specified by r value. Typically a higher insulation r rating means better climate control and better energy efficiency for your home.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Both can be added to uninsulated attics or layered over existing material. For diy attic insulation you ve got two choices. Loose fill or batt the common term for blanket insulation.

It features a unique flexible edge designed to compress as the batt is inserted then spring back expanding the. These include chopped fibers foam fibrous mats and textiles board or block insulation films and foils. A higher insulation r value usually means a higher price point as well. These products provide a high r value inch excellent sound attenuation characteristics and outstanding fire performance.

The class 1 fire rating definition is the flame spread index and smoke development index which means how fast a flame will spread when introduced to the material and how much smoke it produces. Insulation r values vary based on the type thickness and density of the insulation material. The fire resistance of each form depends largely on the material of which it is composed. The higher the r value the better the thermal performance of the insulation.

R value is a measure of insulation s ability to resist heat traveling through it.