R40 Roof Insulation Thickness

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

R40 roof insulation thickness.

As a benchmark one inch of solid wood has an r value of 1. Foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products choose the strength you need from 15 to 60 psi and exceptional moisture resistance. Improved insulation is a good step toward improving building efficiency particularly since the atlanta based american society of heating refrigerating and air conditioning engineers ashrae increased minimum roof insulation levels in 2007 in its standard 90 1 the first increase in 18 years and if that isn t enough to spur someone into action. The importance of insulation thickness r value isn t just a time measurement though.

Insulation level are specified by r value. A recent mckinsey co. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. The higher the r value the better the thermal performance of the insulation.

Plus ecotouch pink fiberglas insulation is greenguard certified to meet stringent indoor air quality standards. Input depth of existing blown in insulation in inches. Ecotouch pink fiberglas insulation friction fit batts are easy to install and available in a full range of r values r 12 through r 40 offering you outstanding thermal and noise control solutions for every project in. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

This calculator is to be used as an estimating tool only. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. 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. It takes into account the size of the sample and the overall change of temperature over time so that you can compare thermal conductivity of materials tested with plates of different temperatures or even that were tested by other methods.

Savings vary depending on the original amount of insulation in your home climate house size air leaks and personal energy use and living habits br br made with a minimum of 96 by weight natural materials consisting of minerals and plant based compounds.