I've decided a while ago I don't use weed fabric when I do installs. It wears down and looks bad after a year or so. I just till the soil under whatever I'm installing rake out the roots. Then ramp and install whatever I'm installing. Tell me customers to use a good preemergent in the spring and use it right weeds won't be an issue. If a couple pop up pull them or spray them.
Besides that it doesn't allow your plants to really deep root and prevents them from acessing water and nutrients below the fabric.