"mg" wrote in message
...
There are 6 or 8 spiral nails on our deck that will not stay down. The
boards are flat on the deck and do not appear to be cupped or warped.
But, within about 3 months of driving the nails down, they are back
up.

Should I pull the nails and replace them with the next size larger
spiral nail?

Should I pull the nails and replace them with coated deck screws?



Deck screws www.mcfeelys.com for some good information about them.
McFeely's carries some very good screws that don't break like some of the
junk at the big box stores.