Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected.
How to frame up a garage door opening.
How to measure the finished width and height use of 2x4s for the sides and header.
Cut two 2 x 6 pieces of lumber and attach to the face of the wall running from the edge of your garage door jambs to the ceiling of your garage.
A typical door opening is 2 inches 5 1 cm wider than the door size being installed to allow for the thickness of the jamb material and shims to plumb the jamb.
Determine the size of the door opening.
The most expensive option is laying several courses of blocks on top of frost footings and then resting the edges of the slab on the blocks.
Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough opening.
Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height.
Measure your door carefully and cut the opening to fit using a reciprocating saw.
Step 1 measure the old door if you are replacing an existing door with one of the same size or the new door of choice if you are building a new garage.
Most garage door openings are just rough openings when the home is built.
The technique of building a garage door frame is straightforward and a finished frame can be completed in an hour.
The jambs need to be 17 inches.
Width of garage door opening standard widths are 8 9 10 12 14 16 17 and 18 height of the garage door opening standard residential heights are 7 7 6 8 header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
How to frame a garage doors opening in this case 9ft wide by 8ft tall.
The size of the door opening will vary depending on the size of the door you plan to install.
Pull a measurement from the floor of your space to the ceiling next to the door opening.
The opening must be finished framed before a garage door can be installed.
Adding one course of block to a slab keeps the garage door framing farther up from the ground which may be necessary depending on the grade.