R Value Of Wood Sheeting

The r value of wood varies by wood density species moisture content.

R value of wood sheeting.

Ready to find the supplies you need in your local store. In general one inch of solid wood is considered to have an r value of 1. R value of typical 3 4 thick pine softwood about r 1 25 30 wood door solid per inch. Use the home depot app to locate products and check inventory.

1 4 plywood r value 0 31 3 8 plywood r value 0 47. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. Sheathing materials plywood 1 25 inch 0 31 inch 0 47 inch 0 63 inch 0 77 inch 0 94 fiberboard 2 64 inch 1 32 inch 2 06 r value of building materials material r inch r thick ness fiberglass inch 3 00 1 inch 4 00 inch 6 00. In exterior walls add insulating sheathing to achieve a greater r value in your wall system.

These values are listed in chapter 25 table 4 of the 2001 ashrae handbook published by the american society of heating refrigeration and air conditioning engineers ashrae.