john m
Well-Known Member
Can anyone recomend a good paint stripper that wont damage grp
Paint stripper for grp
- Thread starter john m
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windlipper
Well-Known Member
Wouldn't dare recommend anything in case I got sued! BUT be very very wary of using Nitromors!
Quandary
Well-Known Member
I used 'Strippit' back in January in an attempt to remove a coat of Primicon type primer from my hull. It failed miserably even with two applications, only succeeding in making the paint tacky so that I had to wait a month before attempting to sand it off. However the temperature was low, close to zero at the time. Others in the boatyard told me they had used it successfully on different types of paint. It certainly did not damage the grp.
Despite wearing face protection I managed to get a spark on my whiskers and though I had a couple of buckets of clean water standing by, I failed to get it off for several minutes. It developed into an ulcer which continued to eat deeper in to my cheek for weeks and the remnant of it is still there. I showered and applied vinegar as soon as I had finished. Effective eye and skin and head protection is essential if applying strong caustic solutions as well as something like a hooded Tyvek boiler suit, long rubber gloves and a running hose or plenty of clean water to hand so that you can wash well before taking your gloves off; I would recommend a full face shield rather than goggles and a mask.
Despite wearing face protection I managed to get a spark on my whiskers and though I had a couple of buckets of clean water standing by, I failed to get it off for several minutes. It developed into an ulcer which continued to eat deeper in to my cheek for weeks and the remnant of it is still there. I showered and applied vinegar as soon as I had finished. Effective eye and skin and head protection is essential if applying strong caustic solutions as well as something like a hooded Tyvek boiler suit, long rubber gloves and a running hose or plenty of clean water to hand so that you can wash well before taking your gloves off; I would recommend a full face shield rather than goggles and a mask.
Stemar
Well-Known Member
When I stripped the old antifoul off Jissel, I tried some stuff based on Caustic Soda (Dilunette?) I've still got most of the tin in a cupboard somewhere. The Bosch electric scraper I bought soon after was much more effective.
The problem is that anything that's really effective on paint is liable to attack the polyester resins in GRP. Not to mention what it does to skin...
As for a recommendation, maybe a random orbital sander and lots of discs? If you go down that route, look on the internet for the discs - don't go to B&Q, etc unless you're very wealthy.
The problem is that anything that's really effective on paint is liable to attack the polyester resins in GRP. Not to mention what it does to skin...
As for a recommendation, maybe a random orbital sander and lots of discs? If you go down that route, look on the internet for the discs - don't go to B&Q, etc unless you're very wealthy.
VicS
Well-Known Member
Avoid the use of paint strippers containing dichloromethane, aka methylene dichloride, Nitromors use to contain this but I am not sure if it still does. There are several Nitomors products. As far as I can see none now contains dichloromethane ... but check.
I suspect its use has been completely discontinued ... yes banned in paintstrippers since Dec 2010 by EU, but I bet still possible to obtain via ebay
The caustic soda based Dilunett is now called called Owatrol "Marine Strip". Thats safe on GRP but not on you! Gloves and goggles are the absolute minimum safety wear
Removall 620 is another which is safer to use and safe on GRP
Success with any will depend on the type of paint involved. Some are pretty resistant to chemical attack.
CliveG
Well-Known Member
I used Dilunett to remove a very thick layer of Sandtex that a previous owner had slapped over the deck and coachroof of my Evolution 25
It did the job but I found that it would dry out rather than keep working unless I covered it in cling film.
I did use quite a lot of it.
It worked well in the ordinary paint on other areas.
It did not affect the GRP.
It did the job but I found that it would dry out rather than keep working unless I covered it in cling film.
I did use quite a lot of it.
It worked well in the ordinary paint on other areas.
It did not affect the GRP.
john m
Well-Known Member
This is exactly what I want to strip it's left over silkaflex after the teak deck has been removed I tried normal paint stripper and it does the same as it does to paint but I want to find something that wont dmage the grp and that I can work in to the non skid parts and then blast off with a pressure washer or does anyone have any better ideas
Tam Lin
Well-Known Member
I used Fairy Power Spray. Stripped the paint and didn't damage the GRP underneath. Of course I wouldn't recommend it, I am just telling you what worked for me!
VicS
Well-Known Member
mainsail1
Well-Known Member
Have you considered shot blasting? So long as you use the correct shot material it is fine on grp and I found it very effective when done by a professional.
Chalker
Well-Known Member
Toolstation have Paint and Varnish Stripper. I used it to slowly remove antifouling back to GRP.
Don't know what it contains but it worked on antifouling and we washed your hands in it with no ill effect to SWMBO's or mine. No damage to the GRP.
Don't know what it contains but it worked on antifouling and we washed your hands in it with no ill effect to SWMBO's or mine. No damage to the GRP.
john m
Well-Known Member
I will try shot blasting as a last resort
Marine Reflections
Well-Known Member
Don't want to sound negative, but I don't think that shot blasting would work as well as one might think, the cured Sikaflex will probably absorb any impact energy (being rubbery) and the flow force of the shot blaster would need to be turned up too high for the Gel coat.
A sharp yet smoothed chisel and some acetone may be the way forward.
There are some brush wheels that fit into a rotary polisher, but the brushes would need to be firm enough to remove the Sikaflex yet soft enough to not hurt the GRP.
There are also 'rubber wheels' for removing stubborn cured mastics, but it's not going to help get into the non-slip, where a brush would.
Interesting one.
A sharp yet smoothed chisel and some acetone may be the way forward.
There are some brush wheels that fit into a rotary polisher, but the brushes would need to be firm enough to remove the Sikaflex yet soft enough to not hurt the GRP.
There are also 'rubber wheels' for removing stubborn cured mastics, but it's not going to help get into the non-slip, where a brush would.
Interesting one.
Marine Reflections
Well-Known Member
I can't vouch for this product as I have not used it myself, but could this be a winner?
http://marinestore.co.uk/Merchant2/merchant.mvc?Screen=PROD&Product_Code=DEBOND4
http://marinestore.co.uk/Merchant2/merchant.mvc?Screen=PROD&Product_Code=DEBOND4
RobF
Well-Known Member
I'm currently using Strippit. It appears to be working really well but does need to be left on overnight. I'm also taking it off with a scraper rather than with a pressure washer. It's removing about 4 or 5 layers at a time with no impact on the GRP.
It's nasty stuff though, needs gloves etc.
It's nasty stuff though, needs gloves etc.
VicS
Well-Known Member
Another caustic soda based product and not far short of a 50% solution, judging by it density
Eye protection absolutely vital
Eye protection : Face shield and safety goggles.
Hand protection : Rubber or plastic gloves.
Skin and body protection : Overalls, apron and boots.
Protective measures : Avoid contact with skin, eyes and clothing
Vegable
Well-Known Member
As its Sikaflex......
...that you're wanting to remove have you thought of trying car-body tar remover. I do know that Autoglym (is it?) Tar Remover is very good at removing fresh Sikaflex (mainly off me and my clothes) and Westerly headlining left-over-sticky-gunky-stuff. Halfords have it at just under £7 a bottle. Don't use the Turtle Wax stuff as that puts a wax polish on as well.
Mike
...that you're wanting to remove have you thought of trying car-body tar remover. I do know that Autoglym (is it?) Tar Remover is very good at removing fresh Sikaflex (mainly off me and my clothes) and Westerly headlining left-over-sticky-gunky-stuff. Halfords have it at just under £7 a bottle. Don't use the Turtle Wax stuff as that puts a wax polish on as well.
Mike
john m
Well-Known Member
I have a lot of diffrent cleaning products that I plan on trying I'm going on holiday then ill be doing it when I get back and I will take pictures and post the results
Applescruffs
Well-Known Member
Try a heat gun.?......mmmm.......hot 'n' melty......easy-peely.....
