strange marks in fibreglass help
- Thread starter mattysupra
- Start date
30boat
N/A
That's gelcoat crazing.It doesn't look like stress related to me but should be investigated anyway.To repair, the affected area must be ground off(I prefer scraping myself) and the gelcoat replaced with topcoat.Colour coordinaton can be a problem.
mattysupra
Active Member
pcatterall
Well-Known Member
What boat/ how old? what is the size of your photo? how extensive are the marks and in what places do they occur. They don't look like stress cracks but more like something wrong with the gell coat. I have seen that sort of pattern where a coating has been applied to an unclean surface.
Tranona
Well-Known Member
Based on that small area the crazing is probably just cosmetic and probably not worth repairing. If it is extensive there are different ways of repairing, but getting a good matched finish is likely to involve extensive re gel coating or painting. Not cheap, but depends on the value of the boat and the potential increase in value if the work is carried out.
mattysupra
Active Member
There is patches all over including hatches under the canopy . Is it a expensive job ? For example how much would a 10cm x 10cm patch be to repair ?
30boat
N/A
It could be a problem with the gelcoat like overcatalyzling when it was mixed for instance.The only way to repair is by scraping off and recoating,sorry.
Tranona
Well-Known Member
Thats a how long is a piece of string question. If the crazing is extensive then you need to get specialist quotes as there are different ways of repairing such blemishes. As I said, depends on value of boat whether it is worth it. If it is a (cheapish) old boat probably not worth doing. If high value newer boat would be asking questions as to why there is so much crazing.
mattysupra
Active Member
I'm on way back from viewing the boat at moment , will post more pictures when home as internet slow on phone
lw395
Well-Known Member
It's hard to say from the pic whether that is deep crazing through the gelcoat, or something quite superficial highlighted by dirt.
It could be largely scratches coloured by teak oil in the second pic.
Surface crazing can be polished out.
Deeper crazing can be abraded and painted.
Crazing right through the gel may need new gelcoat or epoxy then paint.
It depends on the age/value of the boat, do you want it immaculate or merely smart and serviceable?
It could be largely scratches coloured by teak oil in the second pic.
Surface crazing can be polished out.
Deeper crazing can be abraded and painted.
Crazing right through the gel may need new gelcoat or epoxy then paint.
It depends on the age/value of the boat, do you want it immaculate or merely smart and serviceable?
P4Paul
Well-Known Member
Has the boat had a cover over these areas?
mattysupra
Active Member
It's a 1990's built sunseeker, worth around 80000 when restored to a1 condition. Engines etc are new but let down by outside condition at moment
mattysupra
Active Member
No, the door going inside the boat that is under the canopy also has it but only on edge ( first picture )
The second picture is outside steps
P4Paul
Well-Known Member
Has it been in the Med or somewhere else really sunny and hot?
mattysupra
Active Member
Dont know, it's got aircon, ice maker and parasell things on back so stands a chance as med spec ?
mattysupra
Active Member
Something else weird. The edges of the radar arch and the door have this, surely they would of been molded / gelcoated at a different time to the hull ?
So a different mix ? Is there a chance the boat has been cleaned with something that has melted the gelcoat ? This problem seems to be mainly around edges and not on main parts of hull
So a different mix ? Is there a chance the boat has been cleaned with something that has melted the gelcoat ? This problem seems to be mainly around edges and not on main parts of hull
Bobc
Well-Known Member
Sand back, filler-primer, and spray it. Nobody will notice once it's done.
mattysupra
Active Member
pvb
Well-Known Member
It would cost a lot to cosmetically rectify that lot. Unless it's really ridiculously cheap, I'd walk away from it, as unless it's professionally fixed the next prospective buyer will have exactly the same concerns. Lots of other boats on the market.
lw395
Well-Known Member
As it is proper money, I would try getting a quote for a pro to fix it.
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