Twin
HeliBars are bonded into predetermined cut slots around the bay above and below the window with the ends embedded in the front elevation.
BowTies are driven into the joist ends via clearance holes in the masonry and low level cracks are stitched with single HeliBars.
View video of Bay Window Repair using HeliBar. Click the bottom right sysmbol for full screen view.
Visit the downloads section for further detailed information