A few suggestions that I've used for temporary layouts and Wargaming setups. The first two are on my Christmas layout now.
-Thick Grey vinyl I trash picked a whole roll of.
-Christmas village vinyl brick or cobblestone roads.
-28mm(1/56) wargaming roads on thin. mousepad material. By "Strategem" . A bit pricier, but they look great and lay and flex very well Been meaning to buy a second set.
-Actual asphalt shingles. Tabs cut off, painted black, lines stenciled and then dusted with tan spray paint. A bit heavy to tote around and stuff but great looking and stay in place well.