There are maybe 4 types of boat finish - polyester gel-coat, epoxy
gel-coat, 2-component polyurethane & "other" finishes. All are to some
degree impaired by long exposure to UV, which attacks chemical bonds
which link their molecules into hard polymers.
The "other" category includes everything from traditional "drying oil"
paints & lacquers to oil-modified polyurethanes, all of them
single-component air-curing materials. Some cure by reaction with, or
catalysis by, airborne moisture. Others cure by slow cross-linking
aided by oxygen. Often these materials are softer & some may blister
through exposure to combined or alternate sunlight & moisture -
especially if on wood which can itself get damp through unprotected
scrapes & crevices. These finishes retain certain oily characteristics
& in general cannot be successfully over-painted with 2-component materials.
The three fully-synthetic systems are generally more UV resistant, but
again there are limits. Over time, colours will fade or go chalky,
clear finishes may lose optical clarity, all may start to degenerate.
For boats which sit at anchor - rowing shells do not - there is the
further hazard of UV reflection off the water which intensifies the dose.
In all cases, the answer is to protect from direct sunlight with boat
covers, tents or, best of all, sheds. Unprotected outdoor storage is
sure to cause deterioration of the finishes, not to mention the
corrosive effects of bird crap & vulnerability to falling & moving objects.
One question: why is it that club boats, for which the club once paid a
considerable sum, are considered a lower form of life. If the club does
not have boats which it keeps in good nick, then how can it hope to do
well. Regular maintenance protects your assets & increases pride &
performance within the club
Cheers -
Carl
--
Carl Douglas Racing Shells -
Fine Small-Boats/AeRoWing Low-drag Riggers/Advanced Accessories
Write: Harris Boatyard, Laleham Reach, Chertsey KT16 8RP, UK
Find:
tinyurl.com/2tqujf
Email:
ca...@carldouglasrowing.com Tel:
+44(0)1932-570946 Fax: -563682
URLs:
carldouglasrowing.com & now on Facebook @ CarlDouglasRacingShells