There is a threshold in any market where a performance option becomes a default specification, and the Gulf has crossed it. The consequence is not simply more coated glass; it is a change in what gets made upstream.
Upstream consequence
Neutral and solar-control base glasses require different batch compositions from clear float. Where a producer has coated capacity but limited neutral furnace capacity, the constraint moves. Several plants have responded by converting float lines rather than adding them.
Coating bottleneck
The soft-coat magnetron lines are running at high utilisation, and the lead time for a new line is now a genuine commercial variable. Expect further consolidation around integrated float-plus-coating groups.
For specifiers
The remaining confusion is between solar control and low-emissivity. They do different jobs. Getting the pairing right is worth more than any further improvement in either coating.
