Fiberglass Attic Insulation Vs Reflective

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.

Fiberglass attic insulation vs reflective.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Air migrates from warmer spaces toward colder spaces and insulation is designed to help prevent or at least slow that migration. It s easier to incorporate radiant barriers into a new home but you can also install them in an existing home especially if it has an open attic. The sun heats up the roof and then the heat is transferred by radiant heat across the attic space until it hits the attic insulation.

What is the right insulation for an attic. Both types of heat are trying to enter your home on a hot summer day. The reflectix site provides a great range of information about this and about how it differs from other types of insulation. In a new house an installer typically drapes a rolled foil radiant barrier foil face down between the roof rafters to.

Fiberglass has been in use by builders since the later portions of the 1800 s. The radiant barrier resulted in roughly 4 times more savings than the added insulation. Fiberglass insulation comes in larger batted rolls but is also found as a blow insulation that is primarily used in attics. The reflective insulation trade association also offers installation tips.

Fiberglas insulation has been the undisputed standard for buildings for many years but foil insulation is the new contender. The key to using reflectix properly is that you should take a little time to understand how reflective insulation works in the first place. Next i compared adding an additional r 19 to my existing r 19 level of attic insulation vs installing radiant barrier and the results actually surprised me a little. If your attic has a lot of nooks and crannies your best bet may be to use loose fill insulation made of fiberglass or cellulose.

Radiant barriers and reflective systems. Radiant barriers reflect radiant heat.