‘Jamie’ Munro (clockwise:

fay

Located at the

‘
vy

from rear left) hands over:

the keys to. Dave Webster, and family Nancy, Corey .
ind Ryan. The Websters will no doubt be enjoy
he summer from aboard the 19’ Viking Power. ‘bout ,

aa 086. ae
Fax: (604) 9% 986. 6279),

“h
wh

in Well, now we

-proof,”.
2 plass isa permeable material:
‘through, which: waterz:mole-

1 Production quality and storage :
location affect problem severity .

by By Phillp Oldham
Contributing. Writer «

WHATEVER you: ‘call:
ty blisters ina boat's,
“anderwater sutface are,
“surely the scourge of |
the fibreglass boat -
"building industry.

wee

f When fibres,

“glass was: “first.
used for. boat!
building div. the
‘50s we were told
“that. this: revalue:
“tionary “material”

“f Was! “waterproof:
, “and mialitenance

* tree

“know differently, ©
Ifa fibreglass hull
isn't. 5, regularly
waxed - and

“ished, .. the © sur
light’s: ultra-vio

» the geledat* resin ®
leaving * soft :;
~~ chalky”, material which , pros

“vides no protection forthe,

4viderlying laminate
Asi for being -
¢ now know fibre--

‘cules ays continually”
(hydrolysis), often resulting

pol- > PHIUP Oldham.
‘Bilaters ona

~ boat’s surface are”
‘Ivt rays will cven-.° the scourge of the |

. “tually break down - ‘fibregiass boat *:

industry. °

Large produetlon; plants ares
how uslig -vinylester” reslngy

eAWhch are, reportedly seven

Inate water resistant, Epoxy”
has: been found to, be the:
most effective. water bare cr
material, "
Quality of production:
» Manutieturing proces
_ dures contbute. to8 the.”
ST extent cof blisters ©
“ings Asilrty work =
“place will result in
foreign, materials:
H ‘being mixed “In
cawith: the. restis, ©
“crea a poten
dal. for” serlous:
“pilstering probs
lems, A solid: lay:
up with) minimal
volds, no. forelgn
§ material cand: less
permeable surface |
coatings * willbe.

‘ter than ‘one. pros
‘duced without,
strict quality con:
“trol, If the inter!
face between: the,
» surface “coatings
and. inner “laminates” Is “not:
properly - adhered,.“ water
:migration will degrade the

és

blisters and/or delamination,
Location of the boat".
A: boat, kept on a trailer

“and -used “in. salt” water: one

weekends is: unlikely. to” be

in blistering’ of the underwa- io affected -by blisters, :.

“ter surface,

“How fast does the deteri=!«
‘oration take? « yee
“This depends a on; uumbier .
of factorss 222
isThe type of resin used ar
Early -boats' were :built of

~ orthop hthali¢® resins” which
i; have proven to-be-more per-,

* meable ‘than. isophthalie <

resins and include more water '

als, a molecules sucha aS,

aay
” s1e0me* " “two man -

Tests have™ shown ‘hit
boats’ kept incfresh water are
‘more likelysto, “blister “than! t
boats | infsalt water anid ivarm:

ater is worse than cold?'The
theory is that-as, fresh-water,»
- contains’ less dissolved mater;
jal, than sea water, the cont
“mination. within. the, blister: ig
‘produces’ “more” coutwards
: pressure.
~ Blister cepair. ;

To’ succe

pani

THE gc has heen ‘removed ‘from this ‘boat's:
/rovealing .the severely deteriorated: condition of

“underlying tarninatos. * ;

bllstered hull the |

o remove -the Minoued on
Avater-satuirated laminates, A
hull thatZis affected ‘by. a
scattered blisters -can’ “be
repaired: by, grinding out the
affected area, Washing, dry:
“Ing and filling the void vith

oan epoxy fille
less likely to, blise*

): Seriousl

“require. more: determined
approach. The geleoat and:
any damaged laminates; must
“be completely removed from
the hull so ‘the inner, laminate
canbe dried)This is accom:

‘plished by one of three met

pdss

a Grinding, — tising ,a high,

water- “inner laminates - resulting in speed ' grinder with anvabra-

sive, disc, ‘Thi ‘tlabor-
‘intensive. “method «which,
“tnless- done’. by, an” vexper
-enced-hand will leave Boug
‘and an unfair-hull, requiring,
ccextensive filling and fairing to
restore, the original shape. .”
a Blasting = witha mediuny
-remove: the; exterior. sur-
process will:leave.a
irface ‘and’ will remot e
blistered - areas,
‘However, “problems © have
n created by. the’ blasting :
medium being imbedded: in
the’ laminare!and resi ! ing i in
later blistering.
a Peeling’:
© be the

: con dered : ‘to
t method of remov-

erote sr Ry Me WE ah
9 x Porta ok ehaere sha uid ‘

roe. 2 hae reid eieotek

“places:

Cavities are *fi

vas required,” these: will! hav
o be ‘replaced by a table:
pediile

‘Surveyor with 10 year!

{i wy

“ence: based on th ‘North Shor ‘

*.$189/hr* ° “three man
: “. +$10 extra‘on ‘Weekends roy
“RUN. BOUTS 14 ft. - $29.95/hr. -17 ft. $37, 9S/hr,

‘Seycove Marine.

Westin Bayshora Hatel
. 1601-West Georgia St..
| Vancouver B.C. V6G ava

ARR

929. 1251

- 2890 Panorama, Deep Cove.

270 as. Sport 8! 9

cna

"RIVERSIDE MARINE LTD.

"2337 Donart n n Hwy. Nor

Vancouver

929. 2845.