Hi- I have have a kitchen/breakfast area baywindow that has suffered some water damage. The sheetrock, and moulding have been removed from the area 2" below all three windows. I now have to replace the sheetrock which I know I can do. What has me stumped is the inner radius where the sheetrock corners meet. Is there a form for this or is this a "trick" of the trade? Should I just hire someone to do this?
Using the metal reinforced paper "corner bead" as opposed to regular tape will help keep your seams straight. The angle is likely 22.5*, but as Ron said, you just cut the drywall edge square and butt to the other piece. If there IS actually a radius, it's because the finisher couldn't finish the angle properly and chose to "round" it out. A flexible rubber knife is often used for this.....
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