Guys, looking for some recommendations for some outdoors waterproof adhesive, currently just installed some artificial grass in the back garden and its been screwed down at the edges onto a timber frame but I've left it a bit longer around the edges so it can sit on top of the concrete slabs also but the wind blows it up so was looking for some advice on what glues/silicones work best for bonding the grass to the slab area? Cheers