I'm looking for some advice. Yesterday one of my crews finished up an uninsulated porch. The flooring was AZEK gray decking. Throughout the project, we had covered the porch with cardboard with OSB over the top to protect it. Due to the extremely cold weather lately, we put a kerosene heater in the porch. Yesterday when my employees removed the OSB and cardboard, the decking had "lightened up" in the spot where the heater was. The area is probably 2' in diameter. It seems the decking got too hot even though the heater was on OSB.
The decking is in 16' lengths with no butt joints so I can't replace just a little of it. Each piece is about $60 so to replace them would cost about $300 + labor which I will do if there is no way to remedy this.
So....has anyone had any experience with this? I've tried a "heat gun" to bring back the original color with no success. Soap and water, paint thinner do not work either.