By
eHow Home & Garden Editor
Difficulty: Moderately Easy
Things You’ll Need:
- Shelf-support Bracket And Screws
- Pencil
- Hammer
- Hand Drill
- Plastic Wall Anchors
- Screwdriver
- Tape Measure
Step1
Measure the existing brackets on the shelf, then go to the hardware store and buy a matching bracket.
Step2
Hold a shelf-support bracket at the center point, and use a pencil to mark on the wall where the screw holes will go (see A). Remove the bracket.
Step3
Check the box the anchors came in for the diameter of the holes.
Step4
Using a hand drill, drill holes at the pencil marks slightly smaller than your plastic wall anchors.
Step5
Place the anchors in the holes.
Step6
Tap the anchors lightly with a hammer until flush with the wall (see B).
Step7
While holding the bracket firmly against the wall, make sure the holes in the bracket line up exactly with the wall anchors.
Step8
Using a screwdriver or a drill, insert the screws into the anchors until they are flush with the bracket.
Step9
If the shelf still sags, add additional brackets midway between the new bracket and the existing ones.