Hold the mounting bracket against the wall within the borders of the marks made in step 1.
Mounting on a concrete wall.
Screw embedment will work fine.
Attaching the mount to the brick fireplace is the next step.
In hard dense materials like concrete or stone this minimum 1 in.
Drill through a couple of mounting holes into the concrete using a hammer drill and masonry bit.
Hold a mounting bracket against the wall so that the top is even with the shelf line at the point you marked for a bracket.
Position the bracket so the screw holes line up the mortar joints between the blocks as close to the center of the marks as possible.
If they are near a mortar line or seam in the concrete move the bracket slightly.
Masonry and concrete anchor types are considered light duty medium duty or heavy duty based on how much weight they can support.
If not place a small pencil mark at the spot the mounting hole meets the wall.
Be sure to use the bit size specified by the fastener manufacturer.
To the thickness of the material you re attaching to get the minimum length of screw needed.
When mounting on a concrete wall that has plasterboard on it you indicate above to use a 4 inch anchor rather than the 3 inch.
When in this situation are you suggesting to achieve a 3 inch embedment of the anchor roughly into the concrete with the remaining inch effectively spanning from the face of the concrete to the face of the plasterboard.
Cut out and install the wall boxes that will be used for cabling.
Each anchor consists of an unthreaded pin set into a metal sleeve.
It should be a fairly tight fit.
The installation of a tapcon concrete screw is also straightforward.
For attaching something relatively light to concrete it s hard to beat the speed and ease of hammer set anchors.
Select a screw length to penetrate the concrete at least 1 in.
Continue to hammer the anchor down until the nut and washer are tight against the fixture.
I am showing a cheap trick when you don t want to spend the money on expensive dowels or specialized mounting devices.
Using a level determine the desired height of the display before attempting to install the wall mount.
Drop the anchor into the hole in your fixture and hammer the pin on the top of the anchor to drive it into the concrete hole you drilled earlier.
Mark all the screw holes that line up with the mortar joints with a pencil.
Look at where the mounting holes in the bracket line up.
Concrete anchors types vary and include concrete screws hammer set anchors lag shields lead screw anchors plastic wall plugs anchor bolts and more.