There seems to be a massive invasion of grass on a lot of driveways and paving in general this year. I have noticed that our church’s driveway and numerous clients driveways have grass taking over in massive quantities. In most cases it is a maintenance problem which is quite simple to remedy.
This is a sure fire way of destroying your paving if left unattended and then costing a lot of money to either fix or replace the paving. Never leave any small weed or grass pieces for too long as they just multiply and then lift the paving to the point where the paving needs to be replaced at a high cost.
A simple maintenance solution is to wash and sweep your paving once a month with a gentle water flow and a normal house broom. This will get rid of any seeds laying on your paving before they germinate and start growing. I strongly suggest that you attack any problem with a strong weed killer and monitor the paving on a twice weekly basis until the grass problem is solved. Do not ignore this problem as it will destroy your paving and cost you a fortune to replace the paving.