Difference In R19 And R30 Insulation

Quick question how many btu s should be saved if increasing attic insulation from r19 to r30 in 2 000sq ft of space.

Difference in r19 and r30 insulation.

Rated r value and thickness of insulation r value r6 r11. To increase your r value simply apply an extra layer of insulation over your initial layer. Wall insulation whenever exterior siding is removed on an. How to achieve greater r values in exterior walls.

The higher the r value the better the thermal performance of the insulation. 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. If you can blow in loos. Drill holes in the sheathing and blow insulation into the empty wall.

So if r 19 is designed for 3 1 2 and r 30 is designed for 5 1 2 and you still need an inch or so for ventilation of the plywood you need to have at least 10 rafters. As mentioned above you can always increase your r value simply apply an extra layer of insulation over your initial layer. If you can get into the attic consider installing 2 layers of batts criss crossed. Just trying to see if the cost can justify the means.

The short answer is yes.