Tough conditions call for tough
materials. Any time wood is exposed to
the weather, it can take a beating —
and so can the nails used to fasten it.
Even if you frame a deck with pressuretreated
wood, rusting nails can weaken
your structure over time. Rusty nails
also cause appearance and performance
problems for wood siding.
Builders typically use galvanized nails
for framing decks, for applying wood siding,
and for installing exterior trim. But
not everyone knows that "galvanized"
can have more than one meaning when
you're talking about nails. All galvanized
nails are made of steel and coated with
zinc. The zinc coating is what protects
the nail from rust. But how much zinc is