
Additional material placed behind your screen will absorb some of the excess energy that can return to the ball as it rebounds. This can reduce the speed of the ricocheting ball and hence reduce the golf driving netting amount of bounceback from a hit to your impact screen.
Different types of material hung behind the impact screen have their own properties. All of these should provide some protection in case of impact screen failure and the ball continuing backwards through your screen. You should still have some air space behind the most posterior piece of material to allow for deformation and movement.
Archery net (Baffle)
You can buy extra pieces of netting that will increase the cushioning effect of your net and reduce the likelihood of bounceback or failure of your net and screen.
Check out the Cimarron Sports Archery Net Baffle here. Cimarron say this heavy duty net will absorb the impact of all golf balls and will increase the lifespan of your netting and screen.
Memory foam mattress topper
I bet you hadn’t considered putting a memory foam mattress topper behind your screen! During my research for this article I found that many golfers had tried this method, it wasn’t something I’d ever thought of before. They found the mattress toppers reduced bounceback and led to quieter impacts.
You’ll need to experiment with how to fix the mattress topper to your screen. Some have used spray adhesive and others have used more conventional types of fixings.
Blankets
This is the cheapest option and if hung behind your screen will probably do a good job at absorbing some of the impact of your golf shots. Any large and preferably heavy blanket will do. They won’t be as effective as the options above but are worth a try.
Using heavy curtains
The way you position your golf simulator in your garage can mean you get the added benefit of draught reduction from your garage door.
Allowing for room size constraints, low ceilings for example, consider building your simulator with the screen (and posterior layer) just in front of the garage door. I recommend placing your posterior layer right across the whole width of your garage and not just attached to your enclosure frame. It should be right behind your frame though.
This orientation can dramatically reduce draught and raise the temperature in your garage golf simulator, which is useful in the winter months.
You also get the added benefit of making your golf simulator setup more discrete.
I don’t like opening my garage door very high as the neighbors or anyone else could look in and see my simulator. I placed a heavy black blackout curtain 18 inches inside my garage from one wall to the other. The back of my simulator enclosure is attached to the curtain. I get relatively warm golf in the winter and don’t need to worry about nosey neighbors looking in.