Attic Insulation Fire Rating

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

Attic insulation fire rating.

Insulation level are specified by r value. The fire resistance of each form depends largely on the material of which it is composed. R 30 comfortbatt fire resistant mineral wool insulation batt 15 in. Fireproof insulation materials come in five primary forms.

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. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Both can be added to uninsulated attics or layered over existing material. The fire rating system for insulation is basically how long the material can withstand a standard fire resistance test.

A higher insulation r value usually means a higher price point as well. 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. 12 bag rockwool comfortbatt is a semi rigid stone rockwool comfortbatt is a semi rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations.

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. These include chopped fibers foam fibrous mats and textiles board or block insulation films and foils. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Insulation r values vary based on the type thickness and density of the insulation material.

The higher the r value the better the thermal performance of the insulation.