Tuesday, February 5, 2013

Sheathe An Exterior Wall

Have a hammer handy when hanging sheathing on a structure.


Sheathing, which is made up of either Oriented Strand Board (OSB) or plywood, is the material that is hung on the outer perimeter of buildings. To hang sheathing material, nail either 6d or 8d nails through it and directly into the structure's stud wall framing. The purpose of sheathing is to add lateral shear strength to a structure, which will reduce or eliminate the need for angle bracing. One way to hang sheathing is to place the material's long edge vertically across the entire wall.


Instructions


1. Starting at a center point of the structure, hold the sheathing so that the long edges are vertical on the wall. Align the outer vertical edges of the sheathing with the center of the wall studs; the lower short edge will sit 2 inches below the sill plate.


2. Toenail each side of the sheathing to hold it into place. Place a 4-foot level along the vertical and horizontal edges, making sure that they are plumb and level. Make small adjustments to the sheathing if necessary.


3. Hammer nails along the sheathing's outer edge every 6 inches. Locate the studs behind the sheathing face and snap lines vertically to represent each stud. Hammer nails 12 inches apart along the snapped lines.


4. Start another vertical course that matches the newly hung sheathing corners. Continue across the entire wall making sure to cut out each door, window or utility outlet when needed by using an electric saw.


5. Place nailing blocks between each stud along the upper edge of the sheathing if the wall studs are higher than 8 feet. Use 16d nails to secure the nailing blocks to the wall studs. Nail the top edge of the sheathing, spacing nails 6 inches apart.


6. Follow the lower course of sheathing with another top course if the walls are higher than 8 feet. Stagger the sheathing corners so that they don't match up with the lower course. Place the nails 6 inches apart on outside edges and 12 inches apart on studs that are located within the face of the sheathing.








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