Fiberglass Attic Insulation Vs Reflective

Radiant barriers and reflective systems.
Fiberglass attic insulation vs reflective. The key to using reflectix properly is that you should take a little time to understand how reflective insulation works in the first place. What is the right insulation for an 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. Reflective insulation is significantly thinner than fiberglass insulation.
Which is better will depend on the topography of the specific roof you re insulating. Remember traditional attic insulation has r value that works to slow conductive heat. 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.
Both types of heat are trying to enter your home on a hot summer day. Radiant barriers reflect radiant heat.