Measure the overall width of the gate opening.
Rest the section of Lowe’s prefabricated fencing across two sawhorses, picket-side down.
Hook the end of a tape measure on the end picket and mark the dimension determined in Step 1 minus 1-inch on the upper horizontal board, called a “rail,” of the fence section. Use a hand square to extend the measurement line across the top of the horizontal rail and down both sides. This is the width cut line for the gate.
Repeat Step 3 to mark the equivalent point on the bottom horizontal rail of the fence section.
Cut the lines marked in Steps 3 and 4 using a circular saw, making certain the depth of cut is set to only cut through the horizontal rail pieces. This is the gate section cut to width.
Measure the inside dimension between the top and bottom horizontal rails of the gate section and cut two pieces of 2 by 4 framing lumber to this dimension. These are the vertical blocks for the gate frame.
Position one of the 2 by 4s cut in Step 6 between the top and bottom rails at each side of the gate section, then secure in place with 10d nails through the both rails into the ends of the vertical blocks.
Measure the diagonal dimension from the top corner of the gate frame on the latch side to the bottom corner of the gate frame on the hinge side.
Cut a length of 2 by 4 framing lumber to the dimension determined in Step 8 plus 8-inches.
Lay the piece of 2 by 4 lumber cut in Step 9 flat and diagonally on top of the gate frame in the same direction as the measurement taken in Step 8, allowing the board to extend past both corners an approximately equal distance. This will be the diagonal brace for the gate frame.
Align the side of the brace toward the bottom of the gate with the upper latch-side corner of the gate frame and the side of the brace toward the top of the gate with the lower hinge-side corner of the gate frame.
Mark the top cut of the brace in line with the bottom side of the top horizontal rail and the bottom cut of the brace in line with the top side of the bottom horizontal rail, then use a hand square to extend these cut lines across the face of the brace at each end.
Cut the diagonal brace at both end cut lines using a circular saw.
Insert the diagonal brace cut in Step 13 into place within the gate frame and secure in place with 10d nails through the sides of the gate frame into the ends of the diagonal brace.
Flip the gate over and rest the frame-side of the gate securely on the sawhorses, then attach the pickets to the diagonal brace with 8d nails through the pickets into the brace where each picket crossed the brace.
Determine the direction of the gate swing and attach the gate hinges following the manufacturer’s specifications for the type of hinge being used.
Position the gate in the opening, with the pickets on the same side as the rest of the fencing. The gate can be rested on wood blocks to elevate it to the height desired.
Complete the attachment of the gate hinges to the gate posts using the screws provided and following the manufacturer’s specifications for installation.
Install the gate latch following the manufacturer’s specifications for the latch type being used.
Remove the support blocks from beneath the gate assembly, if applicable, then open and close the gate to verify the free swing of the gate through its range of movement, as well as verifying proper operation and adjustment of the latch.
Things You Will Need
- Tape measure
- Circular saw
- 8d galvanized box nails
- 10d galvanized box nails
- Lowe’s prefabricated fence section
- 2 by 4 framing lumber
- Wood blocks (optional)
- Gate hinges
- Gate latch
- Depending on the width of your gate, it may be necessary to remove and reposition the spacing of the outside pickets. Breaking up the adjustment over two or three pickets will help hide the adjusted spacing.