UV through the window screens

[Tails]

I've been wondering about the UV coming through the screen parts in windows. I haven't had my tegu outside yet, but when I'm hanging out with him in the tegu room I can open the window and curtains and the sunlight comes in through just the screen and gives a good sized area to bask in. I know that the UV doesn't pass through glass or plastic, but does enough come through the screened area to have this be worthwhile? I know that taking him outside would be better, but until I get part of my fence fixed I'm worried that he'll get out into my neighbor's yard (or they'll let their dog out and it'll decide to come investigate). I have the UV in his cage, too, but I know that natural sunlight is better. I just wanted to see what the general consensus on this is. Any feedback would be greatly appreciated

~Tails

 

[VARNYARD]

UV does not pass through glass or plastic, it does pass through screen, but the screen will block part of it as well.

 

[redtail2426]

Im not positive but I have read somewere a while back that a 1/2" screen blocks 15 percent of the uv so a tiny screen like that is probably blocking 50-60 percent of the uvb if I had to take an educated guess, There is an article floating around the web all about this, I read up on it a while ago. Also you could get your tegu a leash and then he wont run away.

 

[DaveDragon]

Here's the info on the mesh.
http://www.uvguide.co.uk/mercvapourmeshtests.htm
It doesn't go down to window screen but I'd guess it must block 50%.