Tuesday, Nov 03, 2015 at 11:26
Face it..... the components on this vehicle have been lightly plated because it is cheaper than doing a propper or any paint job, not from any thaught of superiour corrosion protection.
And if you are from the electroplating and cathodic protection industry ( of the zinc mind) I have no doubt you believe that is superiour to painting.
But paints have moved on in the last 50 years. ... There are some very good products out there that outperform plating in particular galvanising hands down. ...... most importantly they are not sacrificial coatings.
I have over 10 years of personal experience using "Galmet Duragal", and on work that I see regularly and have been able to observe closely over the period.
I have seen it in comparison to several cold gal and zinc rich sprays that I have used before and since, there simply is no comparison, ....... because it is not a sacrificial coating.
Yeh I have head several people complain that Duragal does not perform
well or last ....... my conclusions are .....
# that they have not seen it applied correctly ...... it is very often slashed on to cover welding with little or no preparation and in only 1 thin coat ........ enough to get the job out the door.
# that they are not using the Galmet product ..... I was sold a tin of competing product that I was asured was the same ...... not even close
# that they have never used the product at all....
# that they conclude that it is like some other product that they may or may not have used without actually using or knowing about the Galmet product.
Where I have found duragal to excell is in overcoating deteriorated or worn plated surfaces ....... this is exactly the OPs problem.
Particularly when used over aged galvanising it provides way superiour performance to hot dip galvanising alone....... because it does not allow chemical action direct on the galvanised surface.
cheers
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