Moss removal- a few questions

I just booked two jobs involving heavy moss removal, both on a different material. the first is an asphalt shingle roof. it’s not as bad as some i’ve seen and it’s only a small area. i know i can spray it with a roof wash mix, but what do i do about the built-up areas?

the second is on brick pavers. the pavers are tightly linked, so no grout or anything in the joints. there are some areas with a thick band of moss between joints, and other areas with small weeds growing through the cracks. i have a 4gpm machine and a pretty good surface washer and turbo nozzle. should i blast out the moss with a nozzle first and then use the surface washer?

just looking for a little advice. thanks in advance!