|
|
01-28-2019, 11:53 PM
|
#1
|
Senior Member
City: Victoria
Vessel Name: Senang Sakali
Vessel Model: North Sea 37
Join Date: Jun 2017
Posts: 216
|
Chemical bottom paint stripper
I am going to strip my bottom paint this March to remove years of bottom paint. Does anyone on here have experience doing it and what brand did you use. also do you need to barrier coat after chemical stripping.
Thanks
|
|
|
01-29-2019, 12:38 AM
|
#2
|
Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,129
|
Many years ago I did this to a previous boat. What a horrible experience. I used a stripper that you painted on very thick and then covered it with a paper so it would not evaporate as quickly. It didn’t do a great job. It was way more work than I had thought. A different boat that I needed stripping I had soda blasted. What a difference. Yes, if you are stripping the hull, I would definitely do a barrier coat. Cheap insurance and easy to do after the hard work of stripping is done.
|
|
|
01-29-2019, 12:38 AM
|
#3
|
Guru
City: Kenai, Alaska
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 1,236
|
You will probably be best served by having your hull soda blasted, rather than chemical stripping. Environmental issues with chemical strippers and the mess are going to be an issue pretty much anywhere you do it. Finding a yard that will deal with the whole stripping job is probably wise. It's probably less expensive than you think.
If you don't have a barrier coat, or don't know if you have a barrier coat, you should plan to barrier coat.
That's just my two cents, but I have never heard of anyone chemically stripping bottom paint before...
|
|
|
01-29-2019, 02:05 AM
|
#4
|
Senior Member
City: Victoria
Vessel Name: Senang Sakali
Vessel Model: North Sea 37
Join Date: Jun 2017
Posts: 216
|
I am unsure if I have a barrier coat at the moment. I was looking at pettit brand. It apparently only requires 3 coats instead of 6.
|
|
|
01-29-2019, 06:04 AM
|
#5
|
Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,119
|
I used a citris brand a friend wanted me to use on his 42 foot sailboat.
The first stripping was miserable putty knifing it off.
Then he remembers you could pressure wash it off. Much better but I am not sure I would want to do a hard chined powerboat.
The stripper itself was environmentally friendly but the resultant residue my not be. But shouldn't be much different than blasting, just the collection might be an issue.
I don't remember the name he had, I just used some Citris based stripper from Home Depot on a topside doorframe that worked well.
|
|
|
01-29-2019, 08:21 AM
|
#6
|
Guru
City: Narragansett Bay
Vessel Model: Grand Banks 36 Classic #715
Join Date: Sep 2016
Posts: 1,856
|
Citrus stripper from Home Depot works well. I always have it around the house. Having said that, I cannot think of a worse job than using that on the bottom of a boat. The mess would make me crazy. It has to be over 60 or 70 degrees for the stripper to work well. You have to cover it with newspaper or plastic to keep it from evaporating. You will have it in your eyes, ears, and a**hole. If it’s about $$$$, find a way to make a few to pay for sandblasting. Trust me
|
|
|
01-29-2019, 09:22 AM
|
#7
|
Guru
City: Anacortes
Join Date: Nov 2012
Posts: 1,189
|
The only chemical stripper that I found that will go down to the base coats was peel away. You put it on thick, then cover with a paper to keep it from drying out and then let it sit overnight for about 12 hours. Then you lay down plastic and scoop it off one narrow 2-3 inch strip at a time. Bag up the goo, lay down fresh plastic and do the next strip. Repeat. It will take hours. Then apply the next section or side, come back the next day and you will essentially have it. There will still be a residue, so break out 5he vacuum sander and finish it off.
I tried most of the other chemical strippers like pintoff, aircraft, west, citrastrip and none of them would do anything but just make the top layer a little gooey before they dried out and stopped working. Ymmv, but they are all expensive and may not work much at all. Could not imagine doing anything with them but a small area. I tried to do a small trim tab and just wound up sanding.
Not my recommended method. I’d just pay someone to vacuum sand the whole thing.
|
|
|
01-29-2019, 09:34 AM
|
#8
|
Senior Member
City: Watch Hill RI
Vessel Name: Puffin
Vessel Model: Nordic Tug 32/34
Join Date: Jan 2008
Posts: 172
|
I stripped the bottom paint off a previous boat, a 31' Island Packet. I used "Peel Away". Lay it on thick, cover with their special paper (or plastic sheeting) to seal from air, let it sit overnight, and start peeling it off with a joint compound knife. The bulk of the paint should come off with the first coat, but several coats may be required. It is messy. You need to lay down plastic tarps on the ground to catch the crap as you scrape it off. After striping, washing, and a light sanding, I applied a barrier coat. Probably the cheapest alternative for hull striping, over sanding, soda blasting, et al. Definitely a "do-it-yourself" option. I did one side one year, the other side the following year.
|
|
|
01-29-2019, 10:11 AM
|
#9
|
Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,129
|
When I had a boat soda blasted it cost $35 per foot.
|
|
|
01-29-2019, 10:34 AM
|
#10
|
Guru
City: Boston
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 1,608
|
I sanded this summer. Laborious job. Brutal actually. Didn't have much choice as my boat yard no longer allows soda blasting. EPA has stringent rules about collecting residue and it's just wasn't worth the trouble for the yard.
Putting barrier coat on was very easy in comparison.
|
|
|
01-29-2019, 10:45 AM
|
#11
|
Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,817
|
Had both my boats sandblasted down to the gel coat. One had probably 30 coats of hard bottom paint. Left a nice scuffed surface for the barrier coat to stick to. I would look for a boatyard that still sandblasts.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
|
|
|
01-29-2019, 10:53 AM
|
#12
|
Guru
City: Rockport
Vessel Name: Ana
Join Date: Jul 2015
Posts: 1,047
|
I'm back now, after reading the words "chemical stripper" I ran screaming from the room and across my front yard. If you got the money soda blasting is the way to go, just point them at the boat and come back later with a check, no gagging or coughing, no gooey mess to clean up, plus you'll live an extra year or so. In truth I do my own using a sharpened stiff putty knife and do 3 or 4 square feet at a time and in a few days it's done. Yes to barrier coat and I'd suggest ablative bottom paint to avoid this fun in the future.
|
|
|
01-29-2019, 10:54 AM
|
#13
|
Guru
City: Rockport
Vessel Name: Ana
Join Date: Jul 2015
Posts: 1,047
|
Quote:
Originally Posted by Comodave
When I had a boat soda blasted it cost $35 per foot.
|
OUCH! $16.00 a foot here.
|
|
|
01-29-2019, 08:04 PM
|
#14
|
Senior Member
City: Victoria
Vessel Name: Senang Sakali
Vessel Model: North Sea 37
Join Date: Jun 2017
Posts: 216
|
Now I'm rethinking this.
|
|
|
01-29-2019, 08:23 PM
|
#15
|
Guru
City: Kenai, Alaska
Vessel Name: Melanie Rose
Vessel Model: 1999 Willard PH
Join Date: Feb 2013
Posts: 1,236
|
I think the by-the-foot price is also dictated by the beam of the boat. For my 30' boat I paid $100 a foot for blasting, barrier coat, and two coats of Trinidad SR bottom paint. It seemed very reasonable to me at the time, just the paint is $500 for two gallons...
My boat yard no longer allows bottom sanding in the yard, they are concerned about the contamination to the ground and other boats nearby.
|
|
|
01-29-2019, 08:36 PM
|
#16
|
Guru
City: Groton, CT
Vessel Name: Datenight
Vessel Model: North Pacific 45
Join Date: Jan 2008
Posts: 1,103
|
I used chemical striper on the botom of a 37' trawler in 2011. Took me and my brother two days. I used the same stuff I use in my flooring business a Zip Strip product. It worked fast in about 50* weather. The key in my case was a generous coat giving it about 20 minutes before scraping with a sharp scraper or putty knife. The stripper could be neutralized with water so I hosed each section as I went to avoid softening the gelcoat.
You can actually do more work faster with a 1-1.5" tool as long as you keep it sharp. I did have to sand after to get some spots and a smooth finish but was able to move the sander like an eraser on a chalkboard. Used a dust hood and vacuum on the sander. Also had plastic under the boat to catch debris.
Then did 6 coats of barrier. The Interlux rep. recomended I alternate white (I think) and gray barrier coat to make it easy to see any missed spots. A flag coat of black ablative bottom paint then 2 or 3 coats of red ablative.
The hardest part was sanding, it's hard to hold the sander over your head. We did make some low staging so we could lie on our backs, elbows on chest to make it easier. Also wore Tyvec suits and full face respirators.
Good Luck!
Rob
__________________
North Pacific 45
|
|
|
01-29-2019, 10:23 PM
|
#17
|
Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,292
|
Quote:
Originally Posted by Datenight
The hardest part was sanding, it's hard to hold the sander over your head. We did make some low staging so we could lie on our backs, elbows on chest to make it easier. Also wore Tyvec suits and full face respirators. Rob
|
We did a hard dry machine sand of our 36ft boat,using only surgical masks for protection,following some hull work. I envy your protection.
Very little a/f build up, the PO had it soda stripped not long before but didn`t do the hull work. A truly disgusting filthy job working overhead lying on your back,took 2 of us a day per side. We got a lovely smooth hull belying the age of the boat. But never ever again would I do that.
__________________
BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
|
|
|
01-29-2019, 10:44 PM
|
#18
|
Guru
City: Sidney BC Canada
Vessel Name: RochePoint
Vessel Model: 1985 Cheer Men PT38 Sedan
Join Date: Apr 2009
Posts: 1,744
|
You should talk to Keith at Blackline in Sidney, seems they have a new way of stripping old bottom paint off, a few members at our club had them do it and were very please.Dont know what the cost was but Keith will let you know, hope this helps.........
|
|
|
01-30-2019, 07:12 PM
|
#19
|
Senior Member
City: Victoria
Vessel Name: Senang Sakali
Vessel Model: North Sea 37
Join Date: Jun 2017
Posts: 216
|
Quote:
Originally Posted by rochepoint
You should talk to Keith at Blackline in Sidney, seems they have a new way of stripping old bottom paint off, a few members at our club had them do it and were very please.Dont know what the cost was but Keith will let you know, hope this helps.........
|
Thanks I will do that. I am hauling at canoe cove, so black line is in the yard.
|
|
|
01-30-2019, 07:43 PM
|
#20
|
Guru
City: Groton, CT
Vessel Name: Datenight
Vessel Model: North Pacific 45
Join Date: Jan 2008
Posts: 1,103
|
Quote:
Originally Posted by BruceK
But never ever again would I do that.
|
I'm with you Bruce!
Rob
__________________
North Pacific 45
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|