"Richard Clark" wrote in message
...
On Tue, 13 Jan 2009 22:34:48 -0500, "NoSPAM"
wrote:

The breathability properties of Gore-Tex while still shedding water are a
result of controlled pore sizes in PTFE.

Hi Barry,

How come my Gore-tex jacket (20 years old?) leaks like a sieve?

73's
Richard Clark, KB7QHC

Most likely it leaks at the seams. Gore sells a kit containing seam tape
patches with the proper adhesive to recover those seams. The loss of
"breathability" is due to the fact that the PTFE can adsorb skin oils,
grease, etc. This requires cleaning to remove the oils. You might want to
visit http://www.gore-tex.com/remote/Satel...nt/care-center for more
information. The outer fabric outer layer may occasionally need an
application of DWR (durable water repellent). It is also discussed at the
same web page.

73, Barry WA4VZQ