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First off, use 10 inch J bolts, you need 7 or 8 inches of depth into the concrete. An 8 inch J bolt is too short.Every bottom plate needs a minimum of 2 bolts. There must be an anchor bolt within 12 inches of each end. And the maximum spacing between any bolts on a single bottom plate is 6 feet. I put my anchor bolts six inches from the end of each bottom plate.Thus a (8 to 12) foot bottom plate would need three (3) anchor bolts. A 16 foot bottom plate would need 4 anchor bolts.I wet set my anchor bolts, but is would be easier if you could have them already in place before you pour. That way they are in the correct place and will not be forgotten. You can use a 2x4 connected to the form to hold the anchor bolt in place during the pour.Goodluck...
The Spruce / Theresa Chiechi
Safety Considerations
Heavy items such as pedestal sinks, large furniture, and kitchen wall cabinets should not be installed on the wall with drywall anchors. Instead, attach heavy items firmly to wall studs.
How to Install a Sleeve Anchor
You'll need the plastic sleeve anchors plus the provided screws. For tools, use a flathead or a Phillips screwdriver, drill, driver bits, a set of drill bits, and a hammer.
Select the Drill Bit
Consult the instructions on the drywall anchor package to select the correct size of drill bit. If you do not have the instructions, estimate the bit size by comparing the bits to the shaft of the sleeves.
When in doubt, use a smaller bit than the one that seems appropriate. You can always enlarge the hole if needed.
The Spruce / Margot CavinDrill the Hole in the Drywall
Fit the drill bit in the drill. Drill a hole in the drywall.
The Spruce / Margot CavinTap the Sleeve In
Push the sleeve into the hole by hand. If the sleeve is tight, gently tap it with the hammer until it is flush with the drywall.
If the sleeve resists, do not continue to tap. Instead, remove it, drill a slightly larger hole, then insert a new sleeve.
The Spruce / Margot CavinDrill the Screw in the Sleeve
Drill the screw clockwise into the plastic sleeve with a drill or with a manual screwdriver.
The Spruce / Margot CavinHow to Install a Threaded Corkscrew Anchor
Along with the plastic or metal corkscrew anchor, you'll need a hammer, small nail, and screwdriver.
Pierce a Hole
For nylon (plastic) anchors, create a small start hole by tapping a nail into the drywall's paper. Metal anchors do not need a start hole as they are strong enough to create a hole on their own.
The Spruce / Colleen & Shannon Graham
Twist the Anchor Until Flush
Place a Phillips or flat-head screwdriver in the notched head of the anchor. Turn clockwise. Apply firm (but not hard) pressure, to draw the anchor into the drywall.
The Spruce / Colleen & Shannon Graham
Finish the Anchor
Turn the anchor until it is flush with the drywall paper. Do not twist too hard or you risk stripping the head of the anchor.
The Spruce / Colleen & Shannon Graham
Add Screw
Add the provided screw to the drywall anchor.
The Spruce / Colleen & Shannon Graham
How to Install a Wing-Style Anchor
You'll need a drill, drill bits, and a screwdriver to attach a wing style anchor on drywall.
Drill the Hole
Consult the product's instructions for the diameter of the drill bit to use to drill the hole.
The Spruce / Colleen & Shannon Graham
For more anchor bolt installationinformation, please contact us. We will provide professional answers.
Attach the Bolt to the Item
If the bolt is attached to the wings, detach it. Slide the bolt through the hole in the item you want to attach to the wall.
The Spruce / Colleen & Shannon Graham
Put the Wings on the Bolt
Thread the wings onto the bolt. Make sure that the open part of the wings is facing toward the head of the bolt.
The Spruce / Colleen & Shannon Graham
Insert the Wings and Bolt in the Hole
Compress the wings until they are flat. Slide this into the hole. You may feel or hear the wings snap open once they are in the hole.
The Spruce / Colleen & Shannon Graham
Pull the Wings Ahead
With one hand, pull the bolt and its attached item toward you. You should feel the wings touch the back of the wall. Maintain this pressure. With the other hand, use a screwdriver or drill to turn the bolt clockwise.
Fasten the Bolt and Item to the Wall
Continue turning clockwise until the item is securely fastened to the wall. Do not overtighten.
The Spruce / Colleen & Shannon Graham
How to Remove Drywall Anchors
Drywall Sleeve Anchor
You'll need a drill, a flathead screwdriver, and needle-nose pliers to remove a sleeve-style drywall anchor.
Remove Screw
With the manual screwdriver or cordless drill, remove the screw from the plastic sleeve.
Pry up Side of Sleeve
The anchor's plastic sleeve has a flange that rests flat against the face of the drywall. Use the flathead screwdriver to pry up the edge of the flange.
Remove With Pliers
Grab the edge of the flange with the needle-nose pliers. Pull the anchor sleeve straight out.
The Spruce / Margot CavinDrywall Threaded Corkscrew Anchor
Remove the item and screw from the anchor. Place a screwdriver end onto the notched head of the anchor. Turn counter-clockwise until the anchor is free.
If the anchor head strips or otherwise cannot be removed, tap it about 1/8 inch into the wall, cover with drywall compound, then paint.
Drywall Wing Style Anchor
With a screwdriver, turn out the bolt counter-clockwise. The wings will drop into the wall. Remove the item from the bolt.
FAQ
When should you not use drywall anchors?
Weight restrictions are your primary reason for not using drywall anchors. If you're mounting heavy items, locate the wood studs and mount your item using them. Studs are spaced every 16 to 24 inches. Drywall anchor packaging will list limitations and often require a certain wall thickness to be effective. Most drywall is a 1/2-inch inch thick. Never use a drywall anchor on ceilings unless it's made for that purpose.
Can you install drywall anchors without a drill?
You don't need a power drill to install anchors. You can create a pilot or guide hole by using a nail or screw and a few hammer taps. Once you get the hole started and start twisting the screw into the anchor, like an expansion anchor, it splits the anchor's body to hold it in the drywall.
Why are my drywall anchors pulling out?
An anchor can fail for several reasons, including the item you're hanging is too heavy, the hole for the anchor is too big, the screws going into the anchor are not the right size, and the drywall (or plaster) is old, damaged, and not stable enough. You might need to replace it with a screw-in anchor, a molly bolt, toggle bolt, or another hollow-wall fastener.
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