UV SHIELDED GLASS?

[EB847]

MY 150W D.E. RETRO KIT CAME WITH A 3/8" TEMPERED GLASS SHIELD. I MODIFED THE FIXTURE TO FIT INTO MY EXISTING HOOD. DUE TO THE SIZE OF THE HOOD, I REPLACED THE 3/8" GLASS THAT CAME WITH MY KIT WITH A CUSTOM 1/8" TEMPERED PIECE. MY QUESTION THAT NOBODY I HAVE ASKED HAS BEEN ABLE TO ANSWER IS: WHAT MAKES A PIECE OF TEMPERED GLASS "UV SHIELDED"? IS IT SOMETHING ADDED DURING THE MANUFACTURING PROCESS? IS IT A COATING? OR, DOES STANDARD TEMPERED GLASS SHIELD UV? THE PIECE THAT CAME WITH MY KIT HAS THE SAME STAMP AS MY NEW PIECE. IT SAYS NOTHING ABOUT UV. WHEN I ASKED MY LOCAL GLASS SHOP ABOUT UV SHIELDING, HE HAD NO CLUE WHAT I WAS TALKING ABOUT.

 

[Unarce]

There is no difference between tempered and standard glass when it comes to UV blocking. The big difference is that tempered glass is better suited for the heat that your lights produce.

There will also be a small decrease in UV blocking from a 3/8" to 1/8".

 

[Anonymous]

UV doesn't pass through normal glass, IIRC.

 

[MattM]

Dan and reefnutz are correct.

All glass will shield UV to some extent. Only quartz is UV transparent.

BTW, ALL CAPS IS CONSIDERED TO BE SHOUTING! Your posts will be easier to read in normal case.

 

[taikonaut]

(Usually people with a cap username also type in cap. BTW, Matt, you also need to stop shouting too )