R30 Vs R38 Ceiling Insulation

For future reference here is the cavity depth you need for some common insulation r values.

R30 vs r38 ceiling insulation.

12 inches r38. Wall insulation whenever exterior siding is removed on an. Went ahead and asked for r38. Our house has r10 right now.

90 grains might be approaching the ma. So we extended our rafters with some two by fours giving us the space to increase our ceiling insulation to r30. The owner already put new double pane windows in the entire house so hopefully with new insulation the house will be somewhat efficient. The c denotes high density materials specifically designed for installation in areas where space is limited such as cathedral ceilings.

We got a quote for r30 and r38. Here s what i mean. R30 c r30 r38 c r38 insulation thickness 1 75 2 5 3 5 3 5 3 5 6 25 5 5 6 5 8 8 5 10 10 12 all listed thicknesses are approximate and may vary by 0 5 inches. Sixty grains even faster.

3 5 inches r13. Now that you understand insulation r values you can make sure your home is properly insulated. Whoa whoa david oswald you ve just entered the domain of the law of diminishing returns. Does anyone know what the r value of the the current insulation is and if it s worth keeping or replacing.

30 grains of black powder will drive that lead ball just fine. 6 inches r19. Enjoy better floor to floor climate control in your home by installing ceiling insulation. If you don t have all the tools you need to install insulation and improve your insulation r ratings yourself consider our tool rental services.

9 inches r30. Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy. I live in georgia and i believe and that is zone 1. Insulation savings calculator use this insulation savings calculator to measure the financial impact of increasing your insulation performance.

Enter your data into the fields where indicated. We got a quote to add more.