mezereon
Well-Known Member
Monique, sorry to hear about your problems. For reference, what were the consequences of not following your new recommendations?
Coppercoat and weather conditions
- Thread starter RabT
- Start date
Monique
Well-Known Member
Unfortunately, the recommendations came from failure.
Heavy drips.. 3-4mm thick in places due to too heavy coat.
Also, because of too much thickness, there are air bubbles by the thousands...
Hull will be sanded today, then washed and further clean with isopropyl... then 3 light coats of 10% diluted Coppercoat.
I would suggest that dilution is almost a MUST. I do not think Coppercoat would argue with this last recommendation.
I painted my first car at 20yo using my mother's vacuum cleaner and I had less Orange peel than now.
GL everyone.
Heavy drips.. 3-4mm thick in places due to too heavy coat.
Also, because of too much thickness, there are air bubbles by the thousands...
Hull will be sanded today, then washed and further clean with isopropyl... then 3 light coats of 10% diluted Coppercoat.
I would suggest that dilution is almost a MUST. I do not think Coppercoat would argue with this last recommendation.
I painted my first car at 20yo using my mother's vacuum cleaner and I had less Orange peel than now.
GL everyone.
RabT
Active Member
Should I wait or should I go..
Forecast this weekend in the Clyde area looking quite decent:
Fri 23: min 5-6C at night, max 13-15C during the day.
Sat 24: min 7-8C at night, max 15-16C during the day.
Sun 25: min 8-9C at night, max 15-17C during the day.
Sadly I can’t take Monday off at work, only Friday 23.
Does anyone with experience of Coppercoat application think the above conditions are suitable for applying the epoxy and Coppercoat coating on tacky over the 3 days?
There is a heated shed in the yard but the guys would not be able to do it until mid-late May
and could not provide an estimate over the phone!
Forecast this weekend in the Clyde area looking quite decent:
Fri 23: min 5-6C at night, max 13-15C during the day.
Sat 24: min 7-8C at night, max 15-16C during the day.
Sun 25: min 8-9C at night, max 15-17C during the day.
Sadly I can’t take Monday off at work, only Friday 23.
Does anyone with experience of Coppercoat application think the above conditions are suitable for applying the epoxy and Coppercoat coating on tacky over the 3 days?
There is a heated shed in the yard but the guys would not be able to do it until mid-late May
and could not provide an estimate over the phone!timchapman
N/A
Having spent all the money on the product why risk it. If I were you I would follow the 'rules' to the letter.....and then some.
I hate doing jobs twice!
Did mine a couple of years ago and so far delighted with coppercoat.
I hate doing jobs twice!
Did mine a couple of years ago and so far delighted with coppercoat.
Monique
Well-Known Member
Wait for the right conditions IMO.
Do it right, do it once. (wait... think this has been said before)
GL
Do it right, do it once. (wait... think this has been said before)
GL
RabT
Active Member
It is looking alright!
Weather looking alright for this weekend...
Just need to watch a few showery clouds coming up the Irish Sea overnight for the first epoxy coat tomorrow. Saturday and Sunday looking ideal with about 14-16C during most of the day, peaking maybe 17-18C according to most forecasts!
The instructions for the epoxy (Friday and Saturday application) say:
"ME100 is unaffected by relative humidity.
"Minimum temperature for application is 5C, for best results both surface and product should be above 10C. "
For Coppercoat (Sunday) say:
"Do not attemp to apply Coppercoat if the ambient or hull temperatures are below 8C. Protect the hull from rain for 48h".
Feck knows when I will ever get another 3-4 consecutives dry and mild days with >15C temperatures in the Clyde area!
Product guys said forecast was good so I've got to go for it this weekend.
Weather looking alright for this weekend...
Just need to watch a few showery clouds coming up the Irish Sea overnight for the first epoxy coat tomorrow. Saturday and Sunday looking ideal with about 14-16C during most of the day, peaking maybe 17-18C according to most forecasts!
The instructions for the epoxy (Friday and Saturday application) say:
"ME100 is unaffected by relative humidity.
"Minimum temperature for application is 5C, for best results both surface and product should be above 10C. "
For Coppercoat (Sunday) say:
"Do not attemp to apply Coppercoat if the ambient or hull temperatures are below 8C. Protect the hull from rain for 48h".
Feck knows when I will ever get another 3-4 consecutives dry and mild days with >15C temperatures in the Clyde area!
Product guys said forecast was good so I've got to go for it this weekend.
Monique
Well-Known Member
FWIW, if I ever do a Coppercoat again, I will begin with 2 coats of Interprotect Primer then the Coppercoat. But you have to plan 7 days of drying time otherwise the Coppercoat will blister.
Coppercoat dries to "tack" in about 45 minutes.
DONT forget to dilute; from my experience, this should prevent a repeat of my first fiasco.
GL
Coppercoat dries to "tack" in about 45 minutes.
DONT forget to dilute; from my experience, this should prevent a repeat of my first fiasco.
GL
Sans Bateau
Well-Known Member
When I originally Coppercoated Galadriel 7 years ago, we put two coats of ME100 water based epoxy on on the Saturday and then 4 coats of Coppercoat on the Sunday. Never had any problems, except being knackered Sunday night!
Doing some copper coat repairs this Sat, the weather is ideal.
fastjedi
Well-Known Member
+1 ..... April 2011
Sans Bateau
Well-Known Member
RabT, just a tip. If the weather is likely to produce any overnight dew that might run down scuppers etc, just cut a piece of heavy weight polythene and tape it on the hull above the Coppercoat, this will encourage any water run off to drip off the polythene rather than run down the Coppercoat. It worked for us.
fastjedi
Well-Known Member
I was told (by AMC) that the ME100 was less tolerant to temperature and humidity than Coppercoat .... and that appeared to be the case when I was testing at home last March. We applied ours in 3 days during April 2011 (27 deg in the sun)
- Thursday 1x ME100 @ 11am (tacky till 9pm)
- Friday 1x ME100 @ 11am (tacky till 9pm)
- Saturday 4x Coppercoat 10am - 6pm
There is no way we would have got 2x ME100 on in one day although i'm sure you could on a good day in June . August.
RabT
Active Member
thanks for all replies
Well, first coat of epoxy ME100 applied today starting at 1pm at 14-16C, finished at 4pm and it was still 12C by the time I left about 7pm. Very mild for this time of the year.
Second coat of the epoxy going tomorrow in an even warmer day according to the forecast. The most difficult thing was to keep stirring the mix and managing the craddle support legs, that was a total pain.
I have the feeling I got too much epoxy product but I guess it does no harm to apply generous coats, may keep a bit left for launch day for bottom side of the keel bit I can't do just now.
Well, first coat of epoxy ME100 applied today starting at 1pm at 14-16C, finished at 4pm and it was still 12C by the time I left about 7pm. Very mild for this time of the year.
Second coat of the epoxy going tomorrow in an even warmer day according to the forecast. The most difficult thing was to keep stirring the mix and managing the craddle support legs, that was a total pain.
I have the feeling I got too much epoxy product but I guess it does no harm to apply generous coats, may keep a bit left for launch day for bottom side of the keel bit I can't do just now.
pappaecho
Well-Known Member
having done exactly the same last year. The curing times for epoxy and for coppercoat are different.
The epoxy is solvent based, whilst the epoxy in coppercoat is water based.
I would apply the epoxy coating first and give it at least a few days then apply the coppercoat.
Coppercoat needs to be applied all in one day.
The epoxy can be applied one coat at a time with up to months between coats, unless it is Blakes when I think a week is the maximum.
So get a good base of epoxy first and then do the coppercoat later.
Lets be clear about this. you can only have one shot at it. If you have a problem it will be very difficult to rectify. Epoxy is quite hard and is very difficult to sand off if a mistake is made. Get the epoxy on first except for the last coat, which can be applied the day before the coppercoat session.
The almost continual application of 5 coats in one day is very tiring, so get some help, trust me, you will need it!
The epoxy is solvent based, whilst the epoxy in coppercoat is water based.
I would apply the epoxy coating first and give it at least a few days then apply the coppercoat.
Coppercoat needs to be applied all in one day.
The epoxy can be applied one coat at a time with up to months between coats, unless it is Blakes when I think a week is the maximum.
So get a good base of epoxy first and then do the coppercoat later.
Lets be clear about this. you can only have one shot at it. If you have a problem it will be very difficult to rectify. Epoxy is quite hard and is very difficult to sand off if a mistake is made. Get the epoxy on first except for the last coat, which can be applied the day before the coppercoat session.
The almost continual application of 5 coats in one day is very tiring, so get some help, trust me, you will need it!
Sans Bateau
Well-Known Member
ME100 is water based, see my previous post re: application.