Hi Looking for help with tarmac. We got the tarmac done about three months ago. After about three weeks we noticed a few lumps coming up and then the weeds started. Every week it looks worse, it has started to crack in places. Have tried to contact the guys who did it to come back but I think we can forget about that now. Is there anything that can be sprayed on it to keep it as it is before it gets any worse. We have sprayed round-up on the weeds to kill them. Also if anyone can let me know how I go about letting other people know about these guys so noone else is throwing good money away. Any advice welcome.