Most arches are true circular arches, or ones based on a circle with a radius.
Standard arches are either half-circle or less than half-circle arches. The above images show true, circular arches; one being a half-circle arch and the other a less than half-circle arch. Both can have the same radius but one is only a piece of the half-circle arch. This is why we ask for the Height (green) and the Width (blue),
not the radius.
If your arch is not a true circular arch with a radius, these would be considered specialty arches and would require you to provide a pattern.
Other Non-Standard Arch Types:
Inside Barrel Arch -
Inside Barrel Arches are typically used for an inside corner, horizontally on a wall that is curved inward; on an inside surface of an arched
opening (rather than the vertical face of the opening); or on a vaulted ceiling, each with the coating on the inside of the curve and edges.
Where the arch adheres to the (wall/ceiling) surface there is no coating.
You can use the online system to order this arch.
Outside Barrel Arch -
Outside Barrel Arches are typically used on an outside corner, horizontally on a wall that is curved outward, or mounted onto other curved
surfaces, with the coating on the outside of the curve and edges. Where the arch adheres to the (wall/ceiling) surface there is no coating.
You can use the online system to order
Your arch will match the measured dimensions you provide to us, so please CHECK ALL MEASUREMENTS before ordering.
"StyroTrim was the only company I could find who would make a complex arch
exactly to my client's specification".
Phil Coldwell, P. Coldwell Contractors, Inc., Tucson, AZ.