Coat To Bring Attic Insulation Up From 11 To R49

The graph below shows the stepwise reduction in heat flow when you go from r 11 up to r 40 walls adjusting the calculation for atlanta s 3000 hdd.

Coat to bring attic insulation up from 11 to r49.

Pick up the blower and insulation. As noted above there are lots of higher r value per inch alternatives to fiberglass. Achieving greater r values in attics the higher the r value the better the thermal performance of the 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.

For loose fill cellulose this translates to a total depth ranging from 8 inches. Adding insulation is one of those jobs that people think can be done blindly. Kraft faced insulation has a vapor retarder that helps to control moisture transmission through walls or ceilings. This may not be a question that can be answered without seeing the attic but would the extra few hundred dollar be worth the energy saving benefits.

Mark the desired level on different roof trusses around the attic before you start photo 4. If you re lucky you ll get away with this. Wall insulation whenever exterior siding is removed on an. A well insulated home can save up to 15 on heating and cooling costs while providing exceptional sound control performance.

1 insulate the attic after air sealing and reducing moisture. Existing 3 4 inches of insulation. Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Where the irc 2009 recommendations for cold climate attic roof insulation have been adopted r49 is the minimum.

If you re not you could end up with an unhealthy moldy attic. The attic is already air sealed as. Add insulation to attic. Each red column shows the reduction in heat flow for just that step e g r 11 to r 13 or r 30 to r 35.

Cellulose blown in ceiling insulation is a good choice for diyers. Get 5 off when you sign up for emails with savings and tips. We want to bring it up to r49 but i have read that some suggest taking it to r60 to get more energy efficiency. View the owens corning attic insulation 819 00 pallet 819 00 pallet standard delivery.

Get free shipping on qualified r49 fiberglass insulation or buy online pick up in store today in the building materials department. As before with each step up in r value the potential savings decrease for each unit of r. If there s still not enough room you can always add a layer of foam board or closed cell spray foam to the top of the roof topped by sheathing or. We have about 3 of old insulation in our attic.