What's wrong with badly laid fake grass?

[OM2]

We've got black weed protection liner over a patch that is 2m x 4.5m. Below is sand and soil. (The sand was left over by builders. Can't remove easily.).

What would happen if I bought fake grass and just put it on top!?
This patch we don't really do anything - it's not walked on.
The missus has planter boxes on top that she grows things in.

I've looked up I stalling fake grass. It's fairly straightforward. But 1 days hard labour work for me ‍‍
I'm being lazy.

What's the worst that can happen if I buy fake grass and just lay down and hold in the corners with pegs?

Thanks.

 

[JP_]

It'll be fine. Weeds will likely appear on the best laid artificial grass as dirt and seeds will land on it and grow.
I bought a piece for £120 for my "patio" and 4 years on it is still doing great - was put on flattish sand with weed membrane, over dirt.

 

[MisterBoy]

I'm sure I've seen people do this. If it's not being used then treating it as external carpet seems quite reasonable. You might want to find a way to clean it to avoid the weeds.

 

[JP_]

Not had to clean mine. 4 years old, done nothing other than sweep it once this year. I just spread leftover sand on it, flattened with a bit of wood, and put the grass down on top of weed barrier. If you're not walking on it all the time, even less to worry about.

 

[OM2]

Oh...
I was expecting lectures on what I was proposing to do to be utter madness
Thanks guys!
I'll be off to Homebase tmrw! I saw a good bargain 2 weeks ago (I would normally never shop there normally!)