Is R30 Insulation Good For Attic

If using batt insulation between the rafters in the attic you probably end up with open space between each batt above the rafters.

Is r30 insulation good for attic.

You also don t see any gaps that allow you to see all the way down to the ceiling drywall. Wall insulation whenever exterior siding is removed on an. Notice how you don t see any of the ceiling framing down at the ceiling level. Use unfaced insulation when adding more insulation to an attic that already has some insulation laying the rolls or batts at right angles to the floor joists.

Inspecting your attic insulation. Reduce total project cost by having multiple vendors bid on the same detailed work specification of your r30 insulation project. Not a good install. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Existing 3 4 inches of insulation. 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. Depends on type of insulation and how it is installed. The photo above shows an attic insulated with blown cellulose.

Since you are looking at r38 r30 i assume this is an attic. Higher priced r30 insulation typically offer more durable material extended warranties and enhanced appearance and finish options. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. Attic existing 3 4 inches of insulation uninsulated floor uninsulated wood frame wall insulated wood frame wall 1 r30 to r49 r25 to r30 r13 2 r30 to r60 r25 to r38 r13 to r19 n a 3 r30 to r60 r25 to r38 r19 to r25 and add r5 insulative wall sheathing beneath the new siding 4 r38 to r60 r38 r25 to r30.

The extra batting increases r values so it further slows warm air. For loose fill cellulose this translates to a total depth ranging from 8 inches. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Some attic floors that already have a layer of insulation could benefit from an additional application over the existing layer.

If your attic doesn t have any insulation used faced insulation placing it in the space between the joists with the paper side facing down toward the heated livings space.