• General Sign Topics

  Advice on opacity of Polycarbonate

  Posted by Harry Cleary on 7 February 2012 at 13:30

  I have an enquiry about framing a large piece of artwork behind polycarbonate. I am just wondering how clear the polycarbonate would be and how long it will stay clear.?
  Thanks

  Harry Cleary replied 13 years, 10 months ago 2 Members · 2 Replies
• 2 Replies

• 

  David Rogers

  Member

  7 February 2012 at 20:47

  Good polycarb is nearly as optically clear as acrylic (99.9%) but the cheaper ones suffer from U.V. yellowing.

  Buy a decent brand that has UV coatings.

  Indoors it shouldn’t ever yellow though.

  Also – it scratches rather easily – more easily than acrylic and it doesn’t have the ability to be polished either.

  Again higher grades have better scratch resistance. The ULTIMATE polycarbonate for glazing which also has a full scratch guard coating is GM Lexan MARGARD…costs a lot, but really works.

  Dave

• 

  Harry Cleary

  Member

  8 February 2012 at 09:26

  Cheers David!

Log In to Reply