In a message dated 96-08-31 17:19:26 EDT, you write:
>What is you-all's luck with cold galvinizing spray paint???
For minor tower galvanizing repairs, it is a handy material to use. It
doesn't last forever and needs reapplication every year or two. The main
problem I've found with cheaper cold galv sprays is that they don't adher
very well; they tend to be pretty runny and they don't coat very well either.
Since they all have zinc in them, I don't have any way to evaluate their
zinc coating thickness or effectiveness. LPS makes a good one as does Klein.
Tower Tech carrries the Klein version; it's $9.00 a can. Cold galvs come in
spray-on and brush-on versions.
There are other coatings available for applying on towers. These are
typically high tech epoxy coatings and other materials that give you a more
permanent coating than cold galv. They are normally applied to towers that
are already erected and don't meet the minimum zinc depth. These are fairly
expensive as well as a LOT of work; you have to take all the rust off (down
to bare metal) and then apply a primer coat before the epoxy.
There are also materials that are rust converters; that is, they are
applied directly on rusted metal surfaces and they actually convert the rust
to a non-rusting substance. This gives you a tough coating and prevents
against development of new rust. Rust-oleum and Loctite both make one of
these products. They are relatively expensive but can be sprayed on with a
compressor-paint sprayer or brushed on. These are also available through
Your annual tower inspection should include having a wire brush and can
of cold galv so you can fix any rusty spots as you find them.
73, Steve K7LXC
TOWER TECH -- professional tower supplies and services for amateurs