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Hi, Im new to this site and am looking at a 1971 tartan27. The hull
appears to have small crazing/cracking throughout. I found out the
owner used that commercial product "poliglow" on it to get the shine
back. I was wondering if any of you have seen or had any problems of
the hull crazing? I really want to buy the boat,but this cracking has
me hesitent. I may try some acetone on a small corner and see if its
just that poliglow stuff. Any help would be appreciated and I look
forward to being a tartan owner.

Tartan 27 #81 Mooneshine

> Hi, Im new to this site and am looking at a 1971 tartan27. The hull
> appears to have small crazing/cracking throughout. I found out the
> owner used that commercial product "poliglow" on it to get the shine
> back. I was wondering if any of you have seen or had any problems of
> the hull crazing? I really want to buy the boat,but this cracking has
> me hesitent. I may try some acetone on a small corner and see if its
> just that poliglow stuff. Any help would be appreciated and I look
> forward to being a tartan owner.

We look forward to your being a Tartan owner as well; welcome to the conspiracy.

To answer your question: it depends.?

You don't say where on the hull the crazing occurs, so I'm assuming the topsides.? You also haven't indicated whether the? boat's been painted or is in original gelcoat, so I'll also assume it's gelcoat.

Many of the boats of that era were shot with a fairly thick layer of gelcoat.? When the hull flexed the gelcoat - more brittle than the fiber-impregnated glass of the hull - shattered.? Crazing attributable to this problem is general over the whole area of the hull.?

OTOH, if the cracking is localized around areas of stress - bulkheads, say, or other points at which members join or hardware is mounted - it's very possible that the damage goes deeper than the gelcoat.

Pictures would be helpful, if you can get them.

--- In T27Owners@..., "Greg Van Pelt" <greg.vanpelt@...>
wrote:

Hi, Im new to this site and am looking at a 1971 tartan27. The

hull

appears to have small crazing/cracking throughout. I found out the
owner used that commercial product "poliglow" on it to get the

shine

back. I was wondering if any of you have seen or had any problems

of

the hull crazing? I really want to buy the boat,but this cracking

has

me hesitent. I may try some acetone on a small corner and see if

its

just that poliglow stuff. Any help would be appreciated and I

look

forward to being a tartan owner.

We look forward to your being a Tartan owner as well; welcome to the
conspiracy.

To answer your question: it depends.

You don't say where on the hull the crazing occurs, so I'm assuming

the

topsides. You also haven't indicated whether the boat's been

painted

or is in original gelcoat, so I'll also assume it's gelcoat.

Many of the boats of that era were shot with a fairly thick layer of
gelcoat. When the hull flexed the gelcoat - more brittle than the
fiber-impregnated glass of the hull - shattered. Crazing

attributable

to this problem is general over the whole area of the hull.

OTOH, if the cracking is localized around areas of stress -

bulkheads,

say, or other points at which members join or hardware is mounted -

it's

very possible that the damage goes deeper than the gelcoat.

Pictures would be helpful, if you can get them.

Thanks, the crazing is uniform above the water line. It is not due to
stress cracking as I made a point to check all stress related areas
on first inspection. If the hull is shattered due to flexingof the
gelcoat, should I be able to sand down or put use some thicker primer
and re-paint with good results? thanks again, Steve

It seems like the crazing you have is from the gelcoat being too thick. It's really common and not usually structurally significant above the waterline
I have the same problem and and solving it with essentially a barrier coat of thinned epoxy I sanded all the surfaces with and orbital sander up tp 150 grit. the washed and wiped down with laquer thinner and rolled and tipped the epoxy. had a few runs and ended up sanding down again with up to 220 grit and am now ready for primer.
You may want to check some spots below the waterline for similer crazing and also blisters. The tartans are notorious for bistering which is basically an osmotic process that? can in severe cases lead to hull delamination... I have quite a few. Again a good barrier coat will solve most of the crazing and small blisters once they have been sanded down. A major blistering problem is a real headache.
My plan is to finish above the waterline and topsides with a waterbourne two part LPU paint ala system 3. I'll try and update the pics as I go along. still undecided on the varnish situaion btw... the penetrating epoxy seems to have been a good idea but has darkened the teak quite a bit... hopefully the weather improves pretty soon so I can get back to work on the boat.
Good luck
Rich Shearley LOLA 438

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--- In T27Owners@..., richard whitehead <yamiracer@...>
wrote:

hey,

i think i know the boat you are referring to. if it's the one

with crazing covering nearly every square inch, then i advise
caution. if the gelcoat crazing is deep enough so you can see the
fiberglass of if your fingernail can feel a groove, then you are
looking at one serious project to make it right. assuming the hull
is ok, i.e. no water intrusion/delam, then you will have to fair all
crazing, apply multiple coats of filling primer, probably re-fair
what's left, then apply 2 coats of paint. yikes! all doable to be
sure, just make sure you know what you are getting into. also, make
sure to make the offer L-O-W. if it's the boat i think, at least
it's been on the hard for a couple years, so it should be dry. i
have since made myself a 'no paint' pledge, and i'm glad i've stuck
to it in my boat search. but that's just me.

best of luck,

rw


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Thanks everyone. I think that I will continue my search. I talked
with a marine technician that has seen this crazing and as you all
have said, it would be alot of work to bring this hull back. He
worried that after all my painting, the crazing could come back if
the gelcoat cracks go all the way down to the fiberglass. Thanks
again everybody.

you are a wise man.? as a smart person once said to me 'the child does not fear the tiger'.? make no mistake, the sort of fairing/filling/fairing/priming/filling/painting (oh, did i forget to mention sanding) project required to bring these old boats back is a tiger (grrrr), and it can get pricey.? i helped someone do an?old pearson 30 a few years back, and was simply agast at the amount of work involved.? having said that, 4 years later, the pearson 30 i helped with still looks great.? but it wound up taking months to complete.

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