These pictures will demonstrate one of the most intense problems with hydrophobic glass. It tends to create a severe fogging effect when the inside of the building is rather cool relative to the outside air. This happens usually in the hot weather when the AC is cranked and it is very hot and humid outside. This is why you should be very careful before sealing with a hydrophobic sealant. One of the main functions of IGSA is to develop products to be marketed all around the world. But the other purpose is to educate. Because products are completely useless if no one understands them, and how to use them. So unlike other manufacturers IGSA is very very much focused on education. The logo alone should prove this.
Below you will see a series of pictures that I took one very hot and humid day with my phone. This was at the local Dunkin Donuts that had very good air conditioning. They are always cold inside. No one has applied a phobic sealant to the outside of these windows. Which are all insulating glass units. They have a double wall of glass with a partial vacuum and nitrogen gas.
This last picture was NOT taken at this Dunkin Donuts. It is rather a picture of some naturally ocuring (no sealant) hydrophobic glass that I have converted to hydrophylic. You can see the center where it has been converted. No chemicals were used. I used an IGSA product which is a highly concentrated silica compound. This demonstrates how effective phylic surfaces can be over phobic in improving visibility! IGSA will have both phobic and phylic sealants.
Written by Henry Grover Jr.
henrygroverjr@gmail.com
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