Installation Instructions
11
Heat Bending Trim
Cellular PVC is a thermoplastic polymer which 
means it becomes pliable or bendable when 
exposed to certain temperatures and returns to a 
solid state upon cooling. As such, some cellular 
PV&SURÀOHVFDQEHUHKHDWed and re-formed, or 
bent into new shapes. Variations in batches, 
SURÀOHJHRPHWUy and density or weight of the 
SURÀOHZLOOOLNely require some trialing and or 
experimentation to perfect this arWDQGVNLOO)or 
best results, do not bend any cellular PVC trim that 
LVPRUHWKDQZLGH6RPHSURÀOHVDUHSURGXFHG
in a special formulation that facilitates bending, 
however the capability to bend cellular PVC trim is 
limited—not all pieces can be successfully bent 
100% of the time. Royal S4S Trim Boards are not 
recommended for bending. Precision Cut or Sure 
Edge boards are preferred. 
Methods for Bending Cellular PV&3URÀOHV
There are several different methods that can be used 
to heat PVC prRÀOHV
y ·Heat Blankets – great for job site fabrications.
y Convection air circulating ovens.
y Radiant ovens or heaters.
y Heat Guns – great for small jobs and prRÀOHV
Whatever method is used, Royal Building Products 
assumes no liability, for any harm or damage to 
persons, product or property related to heat bending. 
Any and all safety precautions to prevent any harm or 
hazard should be followed by the end-user.










