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.
Wet spray cellulose insulation r value.
Cellulose installation can be done in either a dry installation method or a wet method.
Removal of cellulose insulation is costly.
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.
This versatile formula has a dry adhesive which is activated with a fine water mist during installation that is designed to enhance performance.
As a benchmark one inch of solid wood has an r value of 1.
So building structures should be inspected for signs of weakness before choosing the insulation material.
Cellulose insulation weighs more than fiberglass for the same r value.
The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3.
Modern cellulose insulation made with recycled newspaper using grinding and dust removing machines.
It can be blown in by using air or spread by hand.
Drying time for wet spray.
The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3.
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.
Spray applied sanctuary spray applied insulation products are optimized for wall spray or open attic installations.
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.
Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system.
History of cellulose insulation.
When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding.
Cellulose is among the oldest types of building insulation material.
Pit falls of wet blown cellulose.
Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics.
Wet spray is used for better sealing but takes a very long time to dry.
Related to this we have seen some cellulose contactors still using small cans of spray polyurethane insulation to air seal new homes.
Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch.
The study also concluded wet blown cellulose is not an effective air barrier.
