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Author Topic:   Deck "spiders"
John O posted 05-14-2002 10:20 PM ET (US)   Profile for John O  
I am purchasing my first BW. It is a 1988 Newport that was dealer converted to A Montauk. I am concerned about small eggshell like cracks throughout the deck. The cover the deck. Owner claims it is normal and may have occured when another owner drill hole s to mount something on deck. Is this a problem
Cpt Quint posted 05-15-2002 11:58 AM ET (US)     Profile for Cpt Quint  Send Email to Cpt Quint     
It is common,however there are 2 usuall suspects to this occurance. One is exposure to weather which eventually cracks the gelcoat.
The other is becuase the deck has delaminted from the foam core thus resulting in a "soft deck". You can actually push down and feel the void between the fiberglass mat of the deck and the foam core.
Both issues can be fixed but the cause of the delamintation opens up alot of "why" questions and normally moisture in the core is something you want to fix if you already have the boat but probably nothing you want to start off with.
The gel coat cracks are really cosmetic and if the deck hasnt delaminated that can be fixed with moderate effort.
John O posted 05-17-2002 06:38 PM ET (US)     Profile for John O    
Thanks for the info. I am buying boat Sat. My first boat. I was advised from a friend that the cracks are only in the gel coat and as you stated are only cosmetic. We looked over the deck carefully and assured me that the deck solid
Taylor posted 05-17-2002 07:39 PM ET (US)     Profile for Taylor  Send Email to Taylor     
Here are a couple of pictures of spidering in the deck of a mid 80's 15' hull. One from the stern area, one up by the bow hatch.

I think these were caused parking the boat out on its trailer without a cover in the Seattle area (a moderate maritime envrionment: we usually freeze once or twice a year).

Were they cosmetic or structural? I don't know, but I advised my friend to give the boat a miss. But its the whole package... had the boat had a better interior and tilt/trim or been less money, I might have advised otherwise.

Anyone else what to comment on these spider cracks?

BTW, a Newtauk is sort of rare, and I think pretty well liked by Forum members. Good luck.

John O posted 05-17-2002 08:41 PM ET (US)     Profile for John O    
The first picture resembles the marks on my deck. They seem to be hair line, as if glass had been cracked. The hull is perfect for the year 1988 Newport/Montauk. The motor is an 88 Johnson 88hp and checked out well both with a mechanic and sea trial.. needs some TLC
Taylor posted 05-20-2002 01:09 PM ET (US)     Profile for Taylor  Send Email to Taylor     
I'd really like to hear some other opinions on the causes, seriousness and fixes for the spiders shown in the pictures.

Here is one more picture of spider cracks, from a older 13' hull, and in this case the deck was soft, and the spidering represented a serious problem.

Taylor posted 05-20-2002 04:02 PM ET (US)     Profile for Taylor  Send Email to Taylor     
Ger posted 05-20-2002 04:15 PM ET (US)     Profile for Ger  Send Email to Ger     
Those round cracks are caused be a heavy object being dropped onto the deck. I will defer any opinions of repairs to an expert. I'm interested in repair suggestions myself.
John O posted 05-21-2002 10:20 PM ET (US)     Profile for John O    
My "Spider" cracks are simular to picture 1 ( not the circular) I bought the bw sat and relised that the cracks began fron holes that were drill on deck and then filled after mounted item removed. the deck is solid I hope it is a cosmetic issue.I was lucky to speak with a gent from South of Boston who work for bw 23 years. He stated that circulap cracks are due to heavey objects and also that gel coat cracks in the non skid are difficult to repair. He would not take on such a job. he does continue to do hull and deck work in the winter. FIRST CLASS FIBER GLASS KINGSTON , MA 781 585 0957...Nice guy Henry Smith
outrage22 posted 05-22-2002 01:43 AM ET (US)     Profile for outrage22  Send Email to outrage22     
i know of a rather easy fix for your spider crack problems and it actually works well. you want to take care of this because this alows moisture to penetrate into the laminate and foam. first step is to order a quart of desert tan gelcoat from spectrum color ( i'm assuming your 88' is DT. if not they have your color. then you will need to get your hands on "duratec" hi-gloss additive. ( has listing of distributors) this stuff is great ,you mix it with the gel-coat up to 1 to 1. it thins it and allows it to air-cure. with out this the gel coat will stay tacky unless surface is sealed from air. all you have to do is get a wire brush and prep the nonskid surface. use lots of acetone and scub thoroughly to scuff it and remove any contaminates. then what i did was taped off all but the nonskid so if there is a slight color difference do to age you cant see it at all. this procedure is really way easier than it seems, if you can paint a wall inside your home you can do this. just mix the gel coat and duratec together. get a 6 - 8" foam roller and start rolling! important: apply the gelcoat as thin as possible but at the same time covering it, if the nonskid starts to dissapear you are using way to much. a really nice way to fix this is to have a couple of clean rollers at your side so that you can just roll over it with the dry one. it will absorb any exccess gel coat leaving it beautiful. note: the nonskid texture should remain the same to the naked eye. apply two thin coats or until cracks are no longer visable. if you choose to apply two coats, apply second coat before first is fully cured about 45 mins. to an hour later is good. remember to catalize it, i would use 70% gelcoat and 30% duratec then add your catalyst by total volume so if you had 17oz. of gelcoat and 7 oz. of duratec you would need to add catalyst as if there were 24 oz. of gel coat. it will tell you how much to use on the can of the gel coat. if you need more specifics feel free to email me.


outrage22 posted 05-22-2002 01:52 AM ET (US)     Profile for outrage22  Send Email to outrage22     
forgot to add. this technique only works on the nonskid, for areas without nonskid it is recomended to first reinforce to prevent reccurence and must be sprayed to get a smooth surface. although reccurence of the cracks in the nonskid is possible it is strongly recomended due to water intrusion.
John O posted 05-22-2002 09:52 PM ET (US)     Profile for John O    
Wow-- Thanks for the info. I am a week + away from putting in the water. I will give it ago. Just the input I was looking for !!!

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