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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Lag bolt and washer coating for HSS Columns and plates
| May 27, 2015 Q. Hi |
ACRONYMS: |
On a related note I was going to paint these HSS columns black since I didn't have time to get them powder coated during the construction process. Should I paint the inside the holes in the plates now prior to installing the lags to prevent corrosion or am I overly worrying about it?
Thanks
Dave
Home self-build - Stony Plain, Alberta, Canada
A. Hi Dave. Galvanically speaking, the right bolt & washer material would be plain steel. But I'd probably go with galvanized fasteners because they are going into wood and something could perhaps somehow one day be wet. I don't think the galvanizing causes any realistic compatibility issue in this case.
You should paint what you can but I don't think I'd bother with bolt holes.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
May 2015
May 28, 2015
Q. Thank you Ted.
Would zinc plated bolts/washers be an issue with the steel plates on the columns? I ask for aesthetic reasons. The plated bolts/washer are shiny and the galvanized are dull. These columns(and bolts) are exposed in the interior of the house. From reading this forum it would appear that the plated is the least protective but again maybe this something I don't need to be too concerned about in an interior application in a very dry climate?
Thanks again!
- Stony Plain, Alberta, Canada
June 2015
A. Hi Dave. In an interior application on painted beams or columns, I'd expect zinc plated hardware to retain its shine for a reasonable period. If you wanted it really shiny you could get the hardware nickel-chrome plated.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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