I need to spacify paint for metal stairs that are exposed to excessice moisture and salt. Any suggestion? Also, should I specify that the existing paint be removed to the bear metal? Client wants something that would last 30 years which I don't think is possible. Any help is greatly appreciated.
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Salt Air Resistant Paint
- Thread starter kxa
- Start date
Step 1 - REMOVE THE SALT!!!
Then remove as much of the coating as possible. Abrasive blast to near white metal if you can, then re-clean the surface.
Apply a coat 2+ mils thick [enough to fill the profile and cover the peaks by at least a 1/2 mil] high quality polyamide epoxy that is surface tolorant.
Let it dry /cure per direction, rinse of any surface contamination and allow the suface to dry then apply another 4 - 12 mils of polyamide epoxy.
Again do the dry and rinse thing between each consecutive coat.
For the life expectancy desired, consider flouropolymer urethane as a topcoat or at a minimum a high solids (60%+) acrylic aliphatic urethane.
Then remove as much of the coating as possible. Abrasive blast to near white metal if you can, then re-clean the surface.
Apply a coat 2+ mils thick [enough to fill the profile and cover the peaks by at least a 1/2 mil] high quality polyamide epoxy that is surface tolorant.
Let it dry /cure per direction, rinse of any surface contamination and allow the suface to dry then apply another 4 - 12 mils of polyamide epoxy.
Again do the dry and rinse thing between each consecutive coat.
For the life expectancy desired, consider flouropolymer urethane as a topcoat or at a minimum a high solids (60%+) acrylic aliphatic urethane.
I agree with above response, but note that no paint will last where walked on in a salty environment. Better to use fiberglass grating or a high grade stainless.
This earlier thread may be useful:
PAINT COATING SYSTEMS ON US NAVY DESTROYERS
thread332-88537
The links still work; click "Approved Exterior Ship Coatings" and select "4 Non-Skid Walk."
This earlier thread may be useful:
PAINT COATING SYSTEMS ON US NAVY DESTROYERS
thread332-88537
The links still work; click "Approved Exterior Ship Coatings" and select "4 Non-Skid Walk."
- Status
Similar threads
- Question
- Locked
- Question
- Locked
- Question