Ideally you want to remove the entire weed including the roots but this can be quite hard when weeds have squeezed into minute cracks in the paving surface.
Weeds between concrete slabs.
If your weeds are coming up through cracks in your concrete driveway or the seams between the slabs you can prevent future weeds by sealing the cracks.
Weeds growing in the seams and cracks of a sidewalk driveway or patio can be annoying and unsightly and can be considerably more difficult to remove than weeds in a garden or flower bed.
Weeds growing in concrete expansion joints.
Weeds commonly pop up between patio paving stones and they need to be dealt with before they get out of control and start damaging the structure.
Cement crack filler is inexpensive and easy to find at hardware stores and home improvement centers.
Prevent weed growth between paving slabs with the help of polymeric sand polymeric sand can be used for more than just preventing weeds from popping out between block paving.
For example thanks to it you can also reduce the number of bugs finding their way onto your property through the cracks between the block paving.
Weeds seem to grow virtually anywhere even poking leaves out of cracks in concrete expansion joints on driveways and sidewalks.