High– Small, high density units resist cracking as well as damage from freeze-thaw and salts. Pavers are stronger than ordinary or stamped concrete.
High– High density stone resists cracking and salts.
Low– Subject to deterioration from de-icing salts. Surface sealer may provide some protection from salt attack.
Moderate- Salts can attack and deteriorate some clay pavers.
Low– Cracks from freeze-thaw, settlement and deteriorates from salts.
Low- Cracks from freeze-thaw, settlement and deteriorates from de-icing salts.
Crushed Stone or Gravel
High- Stones resist freeze-thaw cycles and salts.