Preventing weeds to grow between patio cracks

[canabiz]

Hello folks, we got quite a bit of weeds growing between the cracks separating the flowerbed and the patio stones. I am including a picture for reference.

My research indicates filling the cracks with polymeric sand can help address the issue but I am wondering if there are other suggestions. Is there different type of polymeric sand e.g can I just grab whatever available at Home Depot or do I need to get stuff from landscaping company? Thanks in advance.

[BrianT]

I've used polymeric sand to fill the gaps in the builder installed interlocking at my front door and the cracks in my driveway. It seems to work but I find I still need to apply after a few years. Maybe for your patio it will be OK because my driveway and front interlock are always shifting during the winter.

[Mark & Lynda]

You'll need to power wash what's in the joints there now and then add polymeric sand. Polymeric sand needs min 1.5"-2" of depth to bond and cure.

It comes in different colours. I don't know what HD has. I've only bought from the local landscape yard.