Contractor Handbook - Heat Bending
VERSATEX can be heat formed or bent - convection ovens are best for heat forming VERSATEX.
- Take a piece of duct pipe 5’-10’ longer than your longest board and insulate.
- Keep the board flat so it does not take the shape of the duct pipe, place a grating in the duct pipe to support the trim.
- To monitor temperature, place a meat thermometer through the sidewall of the duct pipe approximately at the midpoint.
- Place two torpedo heaters, one at each end of the duct pipe, forcing hot air into the pipe until the VERSATEX trim reaches a temperature of 270°F to 300°F.
- Hold this temperature for roughly 20 minutes making sure the VERSATEX trim has had the chance to soak in the heat.
- Bending is an art and requires trial and error before you become proficient.
- If the heated piece crimps or resists bending anywhere along the edge, it is still too cold in those spots.
All cellular PVC trims bend, although they may require slightly different temperature profiles to get a perfect bend.
Tip: To keep product from distorting, rippling, etc., heat at 270°F for 10 to 15 minutes. Then take the product up to 300°F for no more than 5 minutes. If product is rippling, the ripples can be pulled out by tugging on the ends like you would taffy. The only issue here is that you may lose a little product thickness in the drawdown process.
Other Methods: Cellular PVC boards can also be heat bent using a duct pipe and torpedo heater or a PVC pipe and a wallpaper steamer. The goal is to get the temperature of the trimboard somewhere between 290°F and 300°F.