Not all fiberglass (AKA GRP Glass Reinforced Plastic) is created equal.
Some is made with Acrylic resins, some with various epoxy resins and so
forth. Some have UV stabilizer(s) in the mix and some don't. Comparing
anecdotal "evidence" of environmental robustness is essentially futile
unless the nitty gritty of the chemistry is also known. It is like
saying, I have a bag of stuff and it is pretty heavy and when exposed to
the weather in Minot, ND during a really cold winter it didn't catch
fire. Now compare that to your bag of stuff in a meaningful way.
Painting fiberglass? Is it contaminated with mold release? If yes,
then what kind, silicone, water soluble, or what. Many variables to
consider when painting fiberglass. Clean is good. Lightly abraded to
foster tooth is good. Well proven coatings successfully employed on
fiberglass boats with exposure to sunlight and foot traffic are good
candidates for fiberglass coatings exposed to the weather in many ham
applications.
Patrick NJ5G
On 7/30/2017 12:41 AM, Wes Stewart wrote:
I was thinking about building an LPD antenna and purchased some
Strongwell 2" square fiberglass tubing about 7 years ago. I never
finished the project and the tubing has been kicking around the yard
in the AZ sun since then. I see no signs of degradation and it had no
treatment whatsoever.
Contrast that to the fiberglass military mast sections that turn to
hazardous waste in a year or so.
Wes N7WS
On 7/28/2017 6:27 PM, Rudy Bakalov via TowerTalk wrote:
Hi folks,
Does anyone have first hand experience to share? What can I expect
from primed and painted UV resistant fiberglass?
Thanks!
Rudy N2WQ
Sent using a tiny keyboard. Please excuse brevity, typos, or
inappropriate autocorrect.
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