What screen for high ambient light room?

What’s your current projector lend to screen distance? What picture mode are you in? Is it bright enough? 
 
Model in mind high gain screen reduce black levels, so you want it as low as possible while still being bright enough (and of course ALR screens are more fun icky with figuring this out).

Thanxforresponding!

Distance is 18 feet. What ever normal is. I am an encyclopedia of Hi Fi information and the reciprocal when it comes to video.  

@mijostyn

What ever normal is.

Go into the settings and see which you are on:
Cinema 1, Cinema 2, Cinema 3, Natural, Stage, Dynamic, User 1, User 2, THX

Is it bright enough? If you go on the remote and select Cinema 2 and then THX, how does they look (brightness and color wise)?

We are professional home theater designers and you have several major problems

1: JVC projectors are low lumin projectors

2: You have ambient light spill over

3: Your Grayhawk does improve contrast but is vastly inferior to ambient light blocking screens.

An ambient light reflecting screen will help as well as switching to a much higher lumen output projector you should be looking at a projector with 2500-3,000 lumins, most of the JVC projectors are 1,800 lumins

There are also DIY retrofitable battery powered blinds by Lutron

Have you considered a drape you can slide accross the room's opening to stop the light spillage?

Dave and Troy
Audio Doctor NJ