A pal has a significant amount of this block paving. He is OCD about weeds and picks out moss by hand. He has huge trees so shade/ moss is his enemy.
He has now pressure washed them, revealing this .......

Is there a good concrete/ resin type formulation he could use between the gaps to permanently seal them and rid himself of moss and weeds ?
Thanks
He has now pressure washed them, revealing this .......

Is there a good concrete/ resin type formulation he could use between the gaps to permanently seal them and rid himself of moss and weeds ?
Thanks