Golf Simulator Impact Screen: White vs Gray Material (And How to Actually Pick)

Here's the number that ends most of these arguments before they start: a white impact screen reflects roughly 100% of your projector's light at a gain of about 1.0, while a gray screen sits closer to 0.6 (Source: Carl's Place / Home Performance Lab). That sounds like white wins by a mile. It doesn't.

That "dimmer" gray screen also swallows about 40% more ambient light than white, which is the entire reason it exists. So the real question in the golf simulator impact screen white vs gray material debate isn't "which is brighter" — it's "how much light is bouncing around your room, and how many lumens is your projector throwing?" Get those two answers and the choice basically makes itself.

What Gain Actually Tells You

Gain is just a measure of how much projector light a surface reflects back at you. A gain of 1.0 means the screen reflects essentially all of it. Gray screens trade some of that reflectivity for the ability to absorb stray light instead of bouncing it everywhere.

That trade is the whole story. White gives you maximum brightness but no defense against a lit room. Gray gives you contrast and deeper blacks but demands a stronger projector to look its best. If you want to go deeper on the spec itself, our breakdown of screen brightness vs gain unpacks how the two numbers pair up.

White vs Gray, By the Numbers

This is where most people make the wrong call — they pick a color before they've measured their room or checked their projector spec. Here's what the data actually says.

Gray screens absorb roughly 40% more ambient light than white, which is what produces those deeper blacks and the lack of washout when an overhead light or a window is in play (Source: Carl's Place, 'White or Gray: Choosing the Right Golf Screen'). That's the upside. The catch is brightness.

In a genuinely bright room, a gray screen needs a projector pushing 5,000 lumens or more to fully overcome the light it absorbs, with 4,000+ lumens the practical floor (Source: Carl's Place / Friendly Golfer). For rooms with any meaningful ambient light, the guidance lands around a 3,200-lumen minimum for garage-style setups, with 4,000 lumens preferred on gray material (Source: Home Performance Lab, 2026 impact screen guide).

So if you're running a budget 3,000-lumen projector, gray can leave your image looking flat and dim. White will look brighter — it'll just also wash out the moment someone flips a light on.

White vs Gray Impact Screen: Gain Rating (Projector Light…