Do I need to replace existing fiberboard sheathing when I replace the siding

siding

My home was built in 1978. It is sheathed with a black fiber board. The home needs to be resided. The aluminum siding finish is flaking off. In some places it is down to the metal.

Will the black fiber board need to be replaced in order to apply vinyl siding?

Best Answer

You probably don't need to replace the sheathing if it's still sound, but you will need to be sure the siding is nailed into studs and that the nails are long enough. Normally it's nailed willy-nilly into the sheathing, much as asphalt shingles are on a roof. Fiberboard will not hold nails.

You'll also want to check the siding manufacturer's warranty for their requirements and nailing schedule. Could be that every 16" isn't considered frequent enough for wind resistance or warp prevention or whatever.