You should pull up and remove weeds by hand as and when they appear. If it is a regular problem, you might need to reseal the paving. In extreme cases, the sub layer itself may need to be re-laid. You can use weed killer, however some paving can be discoloured by stronger weed killers.
Bridgwater
The market town of Bridgwater within Somerset contains a population of 33,698 and positioned on the significant communication routes through South West England. This populace has expanded significantly since 1951, when it had only 7,800 people. For any house developments you require soon, make sure to exclusively use vetted professionals in the region and do a comparison of quotations to ensure the very best price.