The argument as to which is the best steel column to use for house foundations is a conversation topic of much contention among the various factions of the housing and restumping industry. All stumps have their different merits depending on a number of factors, including price, durability, availability and corrosiveness. While rarely seen by the layman, due to the stumps residing under the house, they are responsible for a very important workload – protecting your home, your possessions and your family.
As we all know, steel is tough. It is tougher than hardwood and concrete, but unfortunately steel is an extremely corrosive material when exposed to oxygen and water, so it needs to be covered with zinc, to keep it safe from corroding before its time. The choice regarding which zinc coating is the next question that baffles many and which causes arguments from here to Timbuktu. The issue is that zinc coating is very expensive. The ultimate is to have a zinc cover that protects the steel from water and oxygen, while being light enough to not be too expensive; so which of the leading steel column brands is the best choice for your home? Let us have a look at the two best contenders for the job, and see which measure up.
DuraGal and DuraGal Plus Columns
The DuraGal is the lightest and cheapest of the OneSteel products. It has a zinc coating that is applied to the external surface of square, round and rectangular column sections. Its internal surface is a painted finish that is 35 micrometres of zinc thick. The DuraGal Plus, while being more expensive, has a zinc coating on its inside surface as well and is definitely a better option than its little brother. Working out what is best for you will be a discussion with your builder and your bank manager, so we don’t envy the decision you will need to make.
Hot Dip Galvanised Columns
These have the strongest and heaviest coating but are also the most expensive because the steel has to be fabricated and then sent to be galvanised in a zinc bath, at a different place. It takes longer to arrive and causes a lot of trouble if there needs to be on-site alterations made, but in weighing up cost and longevity, these are certainly the best quality of steel column to use.