The best replacement for fiber mesh is rebar.

The best alternatives to fiber mesh are rated as following:
★★★★★  rebar
★★★★  wire mesh
★  welded wire fabric
★  welded wire mesh

Your alternative for fiber mesh is not listed? Suggest!
Speaking about fiber mesh, one probably shouldn't forget about concrete.

Other search terms related to fiber mesh and their ratings are:
★★★★★ concrete
You have in mind a companion for fiber mesh and it is not yet here? Propose!



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fiber mesh
rebar
wire mesh