joeg13
Well-Known Member
I emailed Thompson's to see what the official response would be. For whatever it's worth, here's the email conversation:
Me:
I'm planning to build a wooden workbench. There will be a propane burner with 24" stainless steel legs sitting on top of the bench. The flame is directed up. There could be some wooden structure beside the burner also. The wood should not have direct contact with the flame, but be exposed to heat that radiates on the sides and bottom. I would like to seal the bench with Thompson's Water Seal, but I wanted to check about the flammability of the product once it's dry and whether the heat would cause any fumes. Thanks.
Thompson's:
Our products can only withstand up to 120 degrees F. It sounds as though you surface may get hotter than 120 degrees F. If this is the case do not use our products. Once our products have fully cured (20-30 days after application) they are no longer toxic nor are they a flame risk.
Me:
Thank you. That's very helpful. One clarification. If it is non-toxic and not a flame risk after 20-30 days, what would the result be of exposure to 120+ degree temperatures?
Thompson's:
The product will turn black, peel, crack, and basically fail when exposed to temps higher than 120 degrees F.
Me:
I'm planning to build a wooden workbench. There will be a propane burner with 24" stainless steel legs sitting on top of the bench. The flame is directed up. There could be some wooden structure beside the burner also. The wood should not have direct contact with the flame, but be exposed to heat that radiates on the sides and bottom. I would like to seal the bench with Thompson's Water Seal, but I wanted to check about the flammability of the product once it's dry and whether the heat would cause any fumes. Thanks.
Thompson's:
Our products can only withstand up to 120 degrees F. It sounds as though you surface may get hotter than 120 degrees F. If this is the case do not use our products. Once our products have fully cured (20-30 days after application) they are no longer toxic nor are they a flame risk.
Me:
Thank you. That's very helpful. One clarification. If it is non-toxic and not a flame risk after 20-30 days, what would the result be of exposure to 120+ degree temperatures?
Thompson's:
The product will turn black, peel, crack, and basically fail when exposed to temps higher than 120 degrees F.