FACTORY ASSEMBLY
The timber framework is to be constructed with the sheathing board in position. Breather-Foil FR is rolled out into position and then stapled to the sheathing board. An overlap of 200mm must be allowed at the lower edge of the panel. This is to allow for coverage of the lower sole plate or upper floor joists. An overlap of 150mm must be allowed at the right hand edge of the panel. This is to allow for coverage and sealing of the vertical joint on assembled panels. The end overlap and the bottom overlap should not be stapled, but left loose for site fixing.

All mid panel horizontal joints have an overlap of 75mm. The upper layer must overlap the lower layer to allow any penetrating water to be dispersed to a safe outlet. These horizontal laps are to be left open to allow the panels to breathe. The location of the timber studs should now be highlighted with indelible ink to allow for future accurate positioning of the wall ties.

Any window and door openings are to be cut out with the Breather-Foil FR and can now be turned inside the opening and fixed to the studwork or cut flush to the edges of the opening.

Stacking/Transport
Stack and strap the panels, for transport, as normal. The bubbles compress slightly under load but DO NOT burst. They will reform once the panel is erected. The smooth surface of BF-FR means the timber panels slide off each other resulting in less damage.

Site Work
Panels are erected in to position with the overlaps to the bottom and to the right (looking from outside). After fixing the panels, the vertical overlaps are stapled. YBS Breather-Foil FR wall ties are fixed along the ’marked’ vertical stud line as the external brick wall is built. The anti-glare membrane should be peeled off over the ties as the brick work progresses.

Site Work Exterior
If left exposed use edge battens fixed all around the perimeter to help prevent wind lifting and damaging the Breather-Foil FR in extreme conditions.