Measure the distance between joists (from inside edge to inside edge) and cut Foilboard® to suit the required width.
Place Foilboard® Flexifast® clips at 600mm centres along the Foilboard® panels edge.
Slide the Foilboard® GREEN rigid panel between the joist to the desired depth. (Foilboard® can be installed with either the silver face or green face exposed).
Use a screw or nail to fix the Flexifast® clip to the sides of the joists.
Use either Foilboard® Green tape or Silver tape to seal all butt joins between the panels and any other minor gaps.
Foilboard® Flexifast clip
Foilboard® Green OR Silver insulation joining tape
Retractable Blade / Knife