This clear vinyl window material called Kal Glas, makes excellent windows in any fabric panel—sails, dodgers, awnings. It can be sewn just like cloth. Multiple layers of thin vinyl are pressed together to form sheet goods. The finished product is then polished to make it more optically clear. Installation is made easier if Seamstick (double-sided tape) is used to adhere the window material to the fabric before sewing and cutting. After the material is sewn in place, use scissors to trim away the fabric and expose the window.
Kal Glas 40 Gauge Vinyl Window Material 29" x 68" Features:
Advertised Size: 29" x 68" sheet Actual Size: 28 1/2" x 68" Sheet Thickness: .040 inches Please Note: KalGlas clear vinyl has a certification stamp embossed in the surface which is nearly 2 inches square and roughly 4 inches in from one corner. The "AS-6" stamp is required when the glass is used for automotive purposes and is proof of certification from the Department of Transportation that the glass meets minimum requirements (UV resistance, cold crack, etc.). The stamp cannot be removed, but most of our marine customers either cut out and dispose of this portion of the glass or display it proudly.
Why do vinyl windows turn cloudy and become brittle?
The key to keeping vinyl looking and performing like new is maintaining the integrity of the topcoat and protecting against UV damage. Vinyls contain plasticizers, chemicals that make them soft and pliable, that over time work their way to the surface and evaporate, wash away, or rub off. The top coat (PVF or PVDF) is applied to block plasticizers from migrating out of the material.
These top coats greatly increase the life of vinyl windows, especially those left up permanently. Its effectiveness is reduced on applications that are taken on and off or folded regularly. Strataglass has a special polymer coating that is more scratch resistant and less susceptible to damage caused by folding.
To prolong the life of Kal Glas it is recommended that 303 Aerospace Protectant be used on a regular basis. 303 Protectant helps restore plasticizer protection and adds UV protection to the Kal Glas vinyl window material.
