Hi Pat
No I dont have that system in place, The industry is that fast moving I dont think the foremen or QS would listen to me, they seem to be more interested in getting the houses built and worry about that later.
The idea is to eliminate the need for scrapers on the glass. However with some trades being messy you sometimes have to use a scraper to get underneath the product and lumps of plaster.
To be honest I wouldnt have I wouldnt have taken into account the whole life of the window but was just concerned about protection for the builder so when the house is passed over to the new owner there will be no scratches and I have a fair idea that QSs wouldnt really care.
There would be a lot of replaced glass on sites if I were to introduce this as it is very rare I clean toughened glass on site that doesnt have this problem, the manufacturers musnt be using the right process for cleaning the fabricating debris or they are also under pressure to supply the glass and hurrying the process.
Cheers