washing Tyvek

[squeezebox]

So my Tyvek ground sheet came into the house, my mistake threw it onto the closet floor. My cat decided it smelled enough like dirt to poop onto it a few times. My fault for not keeping organized / clean. So I washed it in the clothes washer. So my question is how many washings until it affects the water resistance.
I'm not asking about the cat problem, I' working on that.

[kayak karl]

i wash mine about 6 times to soften it up. sun will have more effect on its life expectancy the water.