Radiant barrier should always be installed to work with the soffit and ridge.
Install radiant in attic.
By installing a radiant barrier in your attic you can reduce radiant heat transfer from the roof to your attic by absorbing that heat.
If you will not find any instructions you can contact the manufacturer through customer support or look up the information on the internet as there are many different guides on how to properly install heat.
In an open framed attic it is generally easiest to install the strips of radiant barrier roof material across the attic perpendicular to the direction of the roof joists overlapping each run by about 2 inches.
Radiantguard radiant barrier foil insulation installed in an attics can reduce attic temperatures by up to 30 degrees when stapled with a staple gun to the underside of roof rafters by reflecting up to 97 of the radiant heat that strikes its surface thereby reducing heat.
Installing heat radiant barriers is not difficult but you will need to follow the instructions that are usually given by the manufacturer in the form of a booklet in the packaging box.
Check your attic ventilation.
This puts the duct work in a less hostile environment and will reduce heat flow in to the ducts as described earlier.
You want to add the foil on all surfaces that make up the roof but you also need to keep vents open and clear of the foil.
Radiant barrier installation attic radiant barrier installation most of the heat entering a home comes through the roof.
These leaks should be sealed up before installing radiant barrier attic foil directly over attic insulation.
Radiant barriers lower heat transfer rates and keep the attic space cooler lowering cooling costs by up to 17.
The goal of adding a radiant barrier in your attic is to cover as much of the underside of the roof as possible.