The blue anti-glare side is installed facing outwards. This prevents glare when installing. A reflective air space is a gap left in between the exterior cladding of the building structure and the reflective sarking or wall wrap material.

Which side of sarking faces out?

The blue anti-glare side is installed facing outwards. This prevents glare when installing. A reflective air space is a gap left in between the exterior cladding of the building structure and the reflective sarking or wall wrap material.

Which way should radiant barrier face?

Research by the Florida Solar Energy Center (FSEC) found that radiant barriers work best when installed with foil-face down (towards the building interior) and applied under the roof sheathing.