[drive surgeon]

hi im after a sealant that will seal normal concrete flags in order to stop them going black with dirt. anyone use any?  im happy with my block paving sealant but need a sealant for flags.

[Roger Oakley]

Resiblock do one, have a look at their web-site. Resiecco I think.
Also Lithofin may do a concrete sealer, but it will be expensive, but good.