Cellulose Wall Insulation R Value

When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding.

Cellulose wall insulation r value. The common standard by which insulation is measured r value is the level of resistance to heat flow. R value measures conductive resistance. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. When cellulose is densely blown 3 0lbs ft3 or 48kg m3 or greater it is an excellent wall cavity insulation that provides a good r value at a reasonable cost.

However it is seldom used in canada despite its reasonable cost and efficiency. The word cellulose comes from the french word cellule for a living cell and glucose which is a sugar. Building insulation is low thermal conductivity material used to reduce building heat loss and gain and reduce noise transmission. Insulation materials come in many forms.

R value measures how well certain building insulation materials can resist heat. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. The choices can be difficult to sift but cellulose insulation passes as a strong contender. When determining how much insulation you need don t guesstimate calculate.

Cellulose insulation is plant fiber used in wall and roof cavities to insulate draught proof and reduce free noise. The higher the r value the greater the insulation performance. Fiberglass and cellulose have similar r values with ranges depending on how and where they are installed. Because fiberglass comes in batts or blown in insulation and both materials can be.

Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. As a benchmark one inch of solid wood has an r value of 1. The higher the r value the better the insulation performs.

Know exactly how much you need with our project calculators. They are sprayed stapled blown nailed or simply laid in place. This calculator is to be used as an estimating tool only. When installed properly in similar areas they perform about the same at 3 5 to 3 7 r value.

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.