Flex Crown Moulding Curve Chart

Flex crown mouldings have a limit on flexibility determined by the moulding width. We have listed the tightest recommended radius for each width of crown moulding. We do not recommend flexing any of the crown mouldings beyond its minimum radius listing or splitting and stress cracks can occur.

The minimum radiuses for flex crown mouldings are determined by width, thickness and angle of back cut (typically 45 degrees) of the moulding. The formula for determining the minimum radius for crown moulding is 3.2-4.0 x moulding width. This formula is intended as a guideline only. There are many variables that must be taken into consideration when doing radius crowns. Typically the larger crowns (10” & 12”) have less room for error. We intentionally design our mouldings on the thick side so that they have less tendency to dent where they are attached to a ceiling and wall, producing smoother radius with less dimpling.

We do not recommend flexing any of the crown mouldings beyond its minimum radius limits, otherwise splitting and stress cracks can occur. If a customer chooses to exceed the limits of the recommended radii, Pearlworks will not accept any responsibility for any and all problems that may occur.

When ordering flex crown moulding, you must specify if it is for an inside curve wall, or an outside curve wall.

If you have questions, please call. (714) 573-1700