Here is a standard chart for guidance on ceiling height and crown moulding sizes.
What size crown molding for 8 ft ceilings.
The riser molding is outlined in red.
It eliminates nailing frustrations.
This design shows crown molding on top of 36 tall uppers and a small space between the crown and ceiling.
That is there should be less horizontal coverage on the ceiling and more on the wall leading the eye upward.
Onto the wall or ceiling might be too dominant or heavy looking in a room with an 8 ft.
After he saw how it lifted his 8 ft ceilings he was convinced.
The square footage and level of formality of the room can help determine what crown size in that range is appropriate.
For standard 8 foot high ceilings the crown cornice height should be 2 to 6 inches.
Casing it usually smaller than baseboard but can be as wide as baseboard is tall.
Aside from style built up diy crown molding has this big benefit.
For an eight foot ceiling i usually would specify a molding between 3 inches and 5 1 4 inches wide works best.
Ceiling height is the ultimate arbiter of size according to architect richard sammons coauthor of get your house right.
Here is a working drawing of a kitchen with an 8 ft ceiling.
Item 670887 model mld03x04x04co.
Adjust upward for larger rooms.
8 foot ceilings for an 8 foot ceiling height the recommended crown size is 2 1 2 to 6 tall with no picture mold.
There are many different sizes and styles of crown moulding.
7 foot ceiling 3 or smaller 8 foot ceiling 3 4 9 foot ceiling 4 5 10 foot ceiling 6 17 foot ceiling 8 or larger this is taken from a builder s.
Ekena millwork 3 1 4 in x 8 ft primed polyurethane crown moulding.
A standard 8 foot wall typically has a baseboard 3 to 5 inches tall while a 10 foot ceiling calls for 5 to 7 inches.
A crown that protrudes more than 5 in.
The crown molding should be more vertically oriented.
Sometimes we don t know something is wrong untill we see it done right.
I had a client this past summer and the husband really wasn t sure about installing crown molding.
Estimate crown molding width by permitting 1 2 inch of rise for each foot of ceiling height in a room with ceilings measuring 9 to 10 feet.
At the same time the addition of a chair rail lower down perhaps lower than you would normally have one say about 24 inches off the floor will draw the eye from the chair.