Poured as well as concrete block footings and foundations last a lifetime, assuming they
were properly built. Termite proofing of foundations will last about 12 years if the chemical
barriers put in place during construction are left intact. Waterproofing with bituminous coating
lasts 10 years, but if it cracks it is immediately damaged. Concrete or cast iron waste pipes are
expected to last 100 years or more.