Your garage will almost certainly be built with one of the above solid bricks do exist but are very unlikely to be used in a modern garage.
Putting a door in a garage wall.
Check the fit before installing a new door and enlarge the opening as necessary.
Once you are satisfied with the fit of the door remove it and apply several thick beads of silicone caulk to the bottom.
When you cut the doorway you may end up with voids where you cut the bricks especially with frogged bricks laid frog down.
Add another set of marks across the top of the frame to represent a steel lintel that will support the load above the door.
Caulk underneath the spots where the bottom of the jamb and brick moulding will be.
Mark the opening size for the door on both sides of the wall.
Determine how tall and how wide you want the doorway to be.
The opening should be two inches wider than the door frame and about an inch taller in height.
Items you will need 36 inch pre hung entry door 2 2 x 4 x 81 inch studs 2 2 x 4 x 41 inch studs door casing electric miter saw skill saw jig saw screw gun hammer level measuring tape pencil carpenter s framing square door shims 2 inch deck screws 8d finish nails nail set wood putty.
Run a stud finder across the wall perpendicular to the garage door on the right.
Leew2 18 mar 2011.
Mark this spot with a pencil and then repeat this process on the wall to the left of the garage door.
Before you make your first cut double check the measurements.
Move the stud finder around until you find the stud in the wall that is nearest to the garage door.