Painting Metal Deck - Corrosion
Painting Metal Deck - Corrosion
(OP)
I have a situation where we have to use a slab on metal deck adjacent to a pool (i.e. it will form the pool deck). I spoke to Vulcraft and they recommended an expoxy paint over the galvanizing on the deck. They could not offer any specifics though. Does anyone have any experience with metal deck in high humidity environments and recommendations for painting/protecting it? From what I have read painting galvanized is tricky and requires that the contractor understands how to prep the surface very well. I also read that epoxy paints are not recommended for galvanized.






RE: Painting Metal Deck - Corrosion
Get with a quality industrial coating supplier such as Carboline or Tnemec. They have primers and coatings formulated for these applications, but will also place a heavy emphasis on surface prep (pickling, abrasion, etc).
If not an exposed application where aesthetics are issue, I would use an asphaltic coating.
RE: Painting Metal Deck - Corrosion
RE: Painting Metal Deck - Corrosion
RE: Painting Metal Deck - Corrosion
RE: Painting Metal Deck - Corrosion
http://www.galvanizeit.org/about-hot-dip-galvanizi...
RE: Painting Metal Deck - Corrosion
Is the galvanizing gone?
In my experience in a highly corrosive industrial environment:
Paint will peel and fail with steel underneath corroding. Hot dip galvanizing is nearly bullet proof. Cold galvanizing is only for absolutley neccessary touch up. Stainless Steel is great also.
You didn't say if the structure is new? or existing and what the current condition is?
Recommendation:
Hot dip galvanize everything. It is supposed to be self healing.
Use Fiberglass reinforcing instead of steel in concrete.
RE: Painting Metal Deck - Corrosion
I think I will follow the advice of TX and struct and assume the deck is formwork only. I may have them paint the deck as well for a redundancy, I would prefer to avoid corrosion wherever possible since it may express itself through the deck or some other manner.