No, the Steel Cage Barrier must be bolted to concrete, so if the existing surface is asphalt, you will need to excavate and pour concrete footings to install the barrier onto. Concrete footers need to be a minimum of 25MPA and 400mm wide x 400mm deep. If you would prefer to install individual footers for each post, these need to be a minimum of 400(L)x400(W)x400(D)mm per post.