I have just jet washed the rear patio. It is block paved and the blocks are
so clean they look new again. I am considering applying a sealant to try to
stop the ingress of dirt (they have never been sealed before) . Hoping that
after the sealant is applied dirt wont penetrate into the blocks and
dirt resting on top of the blocks can be hosed down and swept with a broom.
Does anyone here have experience of block paving sealant? Is it likely to
do what I want it to do? Any advice on a particular brand to use or to stay
away from?

Thanks