Decorative Fencing

 

Coatings & Quality for Cast Iron Fencing & Gates 

   

Cast Iron   is a very old metal process attributed to the Chinese some 2 thousand years ago. The process really hasn't changed that much in that time.  

You would have to say therefore that it is a time honoured process. And as it hasn't changed much, a very durable one. As is the process so is the product, a very durable one.  

As with all products quality varies. 1812 Cast Iron pride themselves on supplying a high quality product that stands up to the time test of traditional cast iron. So we guarantee you get the genuine article.

  

Coatings.   

Many of the images you will see in our image galleries are natural finish. That is, they have no coating and are allowed to oxidize naturally, (rust over). Cast Iron by nature oxidizes on the surface only and stabilizes so the only down side to not coating is the rust run you get as it is stabilizing. You also get a rust run on an ongoing basis which is much less than the initial. It is unavoidable in its natural state, so in an installation where the staining is going to cause an eyesore, it is best to apply a coating.  

That said many, if not half of our installations are uncoated. The majority of the rest are powdercoated, and the colour of choice is black. We do any colour, (unlike Henry Ford who said you can have any colour as long as it is black) but most choose black as it seems to suit the cast best and is neutral in a colour scheme, so goes with most surroundings.   

There are in fact some really lovely powdercoatings that give textured finishes and multi dimensional colours that can enhance the cast. But at the end of the day, whatever coating you apply to the iron creates a build up. This tends to take away from the natural feel of the metal, so in other words you lose a bit in the process. Life's a compromise, and the gain is in the maintenance department.  

 

Our process for powdercoating the cast is a 3 part process, or 4 if you count the sandblasting. So it begins with sandblasting to bare the iron. Then a modern process of metal spray is applied, where aluminium and Zinc are fused to the surface electrically. It is the equivalent of the hot dipped process of galvanizing without placing in a tank of molten metal. There are a few good reasons for not using hot dipped galvanizing, but suffice it to say we use fusion metal spray. Then a powder coating of zinc primer is applied. And finally a top coating of powder in the colour of choice.  

As we only apply quality coatings, this process is very long lasting, and so the maintenance side of the equation is satisfied.  

There are of course other ways to apply coatings, with some customers choosing the do it yourself method of wet spray or paint brush. All methods are legitimate and the lifetime of the coating obviously is determined by the product and the bloke with the brush.  

For those who still want the natural, but would like to limit the rust staining effect, there is an option of using a sacrificial coating of rust inhibitor. This type of coating is clear and will last while the rust process continues underneath, all the while inhibiting the rust run effect. As this coating is not U.V. stable it will break down reasonably quickly and needs to be reapplied if the clear coat benefit is to be maintained. So by its very nature it is high maintenance. But it can be left to break down altogether and never applied again, it depends on the situation requirement.  

So I am sure there are other coatings that could be discussed but that about covers it. Please contact us by email if you need more information. Enjoy your visit to the rest of the site and if 1812 can be of any further assistance then drop us a line.

 

The Team at 1812.