Regardless what the material is used for, hardwood will outlast softwood by far. However, depending on the circumstances, a well-maintained softwood asset may outlast a poorly maintained hardwood asset.
Yes, Argon is an inert, colourless, odourless, non-toxic gas that can be used to fill the cavity between the panels of glass. Argon is six times heavier than normal air and therefore improves the thermal performance of the unit by drastically slowing down heat loss.
This is a particularly useful product in rooms with a lot of glass, such as a conservatory. A coating is applied to the glass which is activated by UV light. Dirt on the glass is then broken down by the coating, making organic and inorganic dirt unable to 'stick' to the windows. When it rains, the rain drops pick up the dirt and wash it off. Genius! As with all of our glazing systems, you can choose to add the self-cleaning option to your specification, combining energy-efficiency with hassle-free clean windows.