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 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. The fire resistance of each form depends largely on the material of which it is composed. The fire rating system for insulation is basically how long the material can withstand a standard fire resistance test. These include chopped fibers foam fibrous mats and textiles board or block insulation films and foils.

Insulation r values vary based on the type thickness and density of the insulation material. Both can be added to uninsulated attics or layered over existing material. R value is a measure of insulation s ability to resist heat traveling through it. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

A higher insulation r value usually means a higher price point as well. Fireproof insulation materials come in five primary forms. It features a unique flexible edge designed to compress as the batt is inserted then spring back expanding the. Loose fill or batt the common term for blanket insulation.

For diy attic insulation you ve got two choices. These products provide a high r value inch excellent sound attenuation characteristics and outstanding fire performance. Thermafiber residential mineral wool insulation commercial grade at home thermafiber residential mineral wool blankets are ideal for insulating walls floor ceilings and attic spaces in homes. Typically a higher insulation r rating means better climate control and better energy efficiency for your home.

Insulation level are specified by r value.