I have silicone cover for KT that offers no screen protection. I cut 22 gage (.80mm) galvalume steel roofing material to cover screen and easy fit between silicone cover and screen border. I rounded the corners of this Galvalume screen protector. Shearing the metal forms sharp edges that I removed by dragging sharp edge on concrete driveway grinding down the sharp edges. I then taped edges of the metal with electrical tape.
22 gage Galvalume is very ridged material.
http://www.steelroofing.com/faqs.htm
I used M6 Wiss offset aviation snips to cut Galvalume.
http://www.use-enco.com/1/1/29492-m6...ion-snips.html
This was easy project for me as already had tools and scrap metal. First make paper pattern out of 110 weight card stock to easily make correct fitting steel screen protector. If you ask someone that installs steel roofs they will probably cut this cover for small fee or free. You can buy sheet metal and Wiss M6 snips at building supply stores, Home Depot, or Lowes.