Csail
N/A
I had full osmosis treatment on my hull in 2001 but it appears to have come back.How long should i expect it to have stayed good and what can i do with the company that carried out the work.I am sure the warranty is expired.
osmosis
- Thread starter Csail
- Start date
Evadne
Well-Known Member
I had my hull epoxied below the waterline in 1989 and, although the fibreglass has higher moisture readings than on a modern boat, there was no osmosis last time I looked. I would expect at least 20 years, 'cos that's how long the original gelcoat lasted, but if the warranty is only valid for 5 years then your options for redress may be limited. I guess the route would be to contact the company, who may want you to get a surveyor to look at the hull, and then negotiate from there. It all depends on what's causing the blistering: not necessarily epoxy failure, not necessarily their fault.
boatmike
Well-Known Member
I have never seen a guarantee that was valid saying "your boat pox won't return"
Very sorry for your plight but unless someone knows better I would have thought that epoxy treatments are only as good as the substrate beneath and often don't address the problem that caused the pox in the first place. Sometimes it's deep in the laminate itself and goes undetected.....
Thats why cheap treatments are often false economy.
Don't know who did yours but I suggest you try going back and talking nicely to them. They may want to help to protect their reputation but I don't think will be contractually obliged to...
Very sorry for your plight but unless someone knows better I would have thought that epoxy treatments are only as good as the substrate beneath and often don't address the problem that caused the pox in the first place. Sometimes it's deep in the laminate itself and goes undetected.....
Thats why cheap treatments are often false economy.
Don't know who did yours but I suggest you try going back and talking nicely to them. They may want to help to protect their reputation but I don't think will be contractually obliged to...
oldsaltoz
Well-Known Member
G'day Csail,
If you have no joy with the applicator you should name here to let others know.
That said; many of the better hull treatments comprise of a thorough removal of all gel coat and part of the original lay-up, any remaining stained or light areas are then ground out an re built using epoxy resin and cloth (Not chopped strand mat).
The at least 2 coats are rolled on, wet on tacky to avoid sanding and contamination left by the curing process. The epoxy is then left for a day or three to fully cure and is cleaned prior to sanding, then only sanded enough to remove the high gloss.
At this point the hull might be faired.
Another coat of epoxy is applied and at least one layer of epoxy suitable cloth is added, sometimes more depending on how much of the original lay-up had to be removed. more resin is added to wet out the cloth and when tacky more coats are added (up to 4 more).
After curing this is cleaned prior to sanding and an epoxy based primer is applied most apply a mist coat first then the full coat, some apply two top coats.
Not sure how yours was done but it's a very good idea when comparing prices to ask what methodology they apply.
I did this in 1994 for a client and she has no sign of problems 12 years on; the only change from the above was to add a thin layer of antifoul over a mist coat of wet epoxy primer to ensure a good key for the full antifoul coat.
Good luck with your applicator and
avagoodweekend......
If you have no joy with the applicator you should name here to let others know.
That said; many of the better hull treatments comprise of a thorough removal of all gel coat and part of the original lay-up, any remaining stained or light areas are then ground out an re built using epoxy resin and cloth (Not chopped strand mat).
The at least 2 coats are rolled on, wet on tacky to avoid sanding and contamination left by the curing process. The epoxy is then left for a day or three to fully cure and is cleaned prior to sanding, then only sanded enough to remove the high gloss.
At this point the hull might be faired.
Another coat of epoxy is applied and at least one layer of epoxy suitable cloth is added, sometimes more depending on how much of the original lay-up had to be removed. more resin is added to wet out the cloth and when tacky more coats are added (up to 4 more).
After curing this is cleaned prior to sanding and an epoxy based primer is applied most apply a mist coat first then the full coat, some apply two top coats.
Not sure how yours was done but it's a very good idea when comparing prices to ask what methodology they apply.
I did this in 1994 for a client and she has no sign of problems 12 years on; the only change from the above was to add a thin layer of antifoul over a mist coat of wet epoxy primer to ensure a good key for the full antifoul coat.
Good luck with your applicator and
avagoodweekend......
Andrew_Fanner
Well-Known Member
That all sounds very thorough, and agonisingly pricey as a %age of the potential value of a given boat.
There again, I'm not at the expensive end.
There again, I'm not at the expensive end.
G
Guest
Guest
Re: osmosis ..... most guarantees ...
Issued in UK were / are for 5 years. There were a few for 10 years in the past - but I haven't heard of any now that issue on 10.
A good treatment should have lasted longer than this .... in fact should reasonably be expected to more than double the guarantee life.
As another says - no treatment says it cures it - just sorts it at that time.
The treatment should have removed any of the errors in lay-up / gelcoat that added to the tendency to take up moisture - such as dry laminate areas, voids, poor rolling / spraying out of matt, wicking etc.
Do you have records of wmoisture levels when treated ..... before, during and when actually signed off ? Was she really dried out when barrier lay-up and re-modelling carried out ?
Issued in UK were / are for 5 years. There were a few for 10 years in the past - but I haven't heard of any now that issue on 10.
A good treatment should have lasted longer than this .... in fact should reasonably be expected to more than double the guarantee life.
As another says - no treatment says it cures it - just sorts it at that time.
The treatment should have removed any of the errors in lay-up / gelcoat that added to the tendency to take up moisture - such as dry laminate areas, voids, poor rolling / spraying out of matt, wicking etc.
Do you have records of wmoisture levels when treated ..... before, during and when actually signed off ? Was she really dried out when barrier lay-up and re-modelling carried out ?
Topcat47
Well-Known Member
Re: osmosis ..... most guarantees ...
Make sure it IS osmosis. Don't take your surveyor's word. My last survey showed high moisture content....the surveyor said Osmosis, despite the previous treatment. There was one small osmotic patch but that could easily have been ground out and repaired.
Make sure it IS osmosis. Don't take your surveyor's word. My last survey showed high moisture content....the surveyor said Osmosis, despite the previous treatment. There was one small osmotic patch but that could easily have been ground out and repaired.
