Teardrops n Tiny Travel Trailers

Battens? The foam was cut to exact fit. That means it filled the cavity between the rafters and touches the studs on the ends. To install the with walls in place I cut a slit in each to allow me to form a V. Then it was pushed into position. Battens serve a 2 fold purpose. 1 ensure the foam stays up, 2 to provide screw points for the ceiling as the Rafter & stud spacing is uneven on the Cargo Craft trailer