Wet Spray Cellulose Insulation R Value

The study also concluded wet blown cellulose is not an effective air barrier.

Wet spray cellulose insulation r value. Made from recycled paper nu wool premium cellulose insulation has superior thermal and air infiltration properties creates quiet and draft free buildings and saves on energy bills. Spray applied sanctuary spray applied insulation products are optimized for wall spray or open attic installations. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7.

Modern cellulose insulation made with recycled newspaper using grinding and dust removing machines. Drying time for wet spray. Wet spray is used for better sealing but takes a very long time to dry. So building structures should be inspected for signs of weakness before choosing the insulation material.

History of cellulose insulation. Nu wool premium cellulose insulation is a superior product designed for use in walls attics and floors of new and existing residential and commercial structures. It can be blown in by using air or spread by hand. The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3.

Related to this we have seen some cellulose contactors still using small cans of spray polyurethane insulation to air seal new homes. Pit falls of wet blown cellulose. The r value of wet spray and dense pack cellulose insulation depends slightly on its installed density and the exact type of cellulose used but commonly ranges between 3 6 and 3 8 per inch as measured by the standard astm c518 test. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. This versatile formula has a dry adhesive which is activated with a fine water mist during installation that is designed to enhance performance. Unlike fiberglass insulation which improves with the increase of density cellulose insulation offers the same protective values across the board regardless of material density. The r value of wet spray and dense pack cellulose insulation depends slightly on its installed density and the exact type of cellulose used but commonly ranges between 3 6 and 3 8 per inch 1 as measured by the standard astm c518 test.

As a benchmark one inch of solid wood has an r value of 1. Removal of cellulose insulation is costly. Citation needed many types of cellulosic materials have been used including newspaper cardboard cotton straw sawdust hemp and corncob monticello was insulated with a form of cellulose. Cellulose installation can be done in either a dry installation method or a wet method.

Cellulose insulation weighs more than fiberglass for the same r value.