- Measure and mark the walls for your yard shed with wooden stakes or spray paint. You can use treated wood posts or metal frames to build your yard shed; metal poles have predrilled holes for attaching boards or siding, but you'll need to drill pilot holes into the treated wood beams so you can connect them more easily. You should place your wooden posts or poles every 16 to 24 inches around the perimeter of your shed. Make sure to dig holes for the posts at least 18 inches deep to avoid the frost line. You'll need to add a small amount of gravel in the bottom of each hole before you stand your post and pour the cement to keep the wood from sitting on top of the ground soil. Check to make sure the post is straight and level before you pour in the Quickrete. Cementing the wooden posts or poles for the frame into the ground offers better structural stability for your shed.
- You can brace the vertical posts for your yard shed with 2-inch-by-6-inch treated wood beams around the perimeter at the top and at the bottom. Attach the beams with metal braces or decking screws. Frame the walls of your shed with 2-inch-by-4-inch treated wood boards running horizontally between the posts, every 2 feet from the top beam to the bottom beam. Place the boards on the outside of your posts, making sure they are level before you attach them with decking screws. You can also create your door header and frame with 2-inch-by-4-inch treated wood boards. To frame the roof, run 2-inch-by-6-inch treated wood beams across the length or the width of your yard shed.
- You can add sheets of treated plywood and vinyl siding to make an attractive yard shed, or enclose the sides with metal sheeting. Attach the vinyl directly to the plywood or attach the metal directly to the post frames of your shed. You can also use metal sheeting to make an inexpensive roof; just use roofing nails to attach the metal sheeting to the treated wood beams that span the width or length of your shed.
