My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting? Thanks, Rick M17 #633 Lynne L
rick: i can't remember from prior posts if you keep your boat in-water for extended periods? if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters. larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint. :: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com --- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
An "Ablative " paint slufs off over time keeping the bottom relatively clean, and is mostly gone. A hard bottom "Epoxy" paint has anti fouling in it and when it's gone, you still have the epoxy paint. After a number of years the build-up has to be COMPLETELY sanded off, the ablative just needs a light sanding. YOUR CHOICE - do you like sanding? -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of W David Scobie Sent: Friday, March 23, 2012 10:30 AM To: For and about Montgomery Sailboats Subject: Re: M_Boats: Bottom paint rick: i can't remember from prior posts if you keep your boat in-water for extended periods? if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters. larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint. :: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com --- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
I started a bottom job on my M-17 it is a 1974 model, I have kept it in the water all year for the last 5 years, I will pull it out for 2-3 months a year for annual cleanings. After much research I will be using the Petite Hydrocoat this year. It is a waterbased ablative and according to the specs should work great for me. As with any other job preparation is the key to success. With that in mind I removed the center board, since this also needs to be scrape, refaired and painted. I did run into a snag this year, after sanding off the old paint I noticed a lot of little circles in the gelcoat, these were the size of a pencil eraser, at first I thought I had hit another coat of paint, unfortunately it was the gelcoat. They were not blisters, just circles of cracked gelcoat. Probably did blister but then when I pulled the boat out and let it dry, the blisters receded and left the cracks. I guess this had been going on for a while but I never noticed since I normally just knocked off the old loose paint and applied the new bottom paint. It was not until now that, since I am going to be using a different type of paint, I decided to sand all the way to the gelcoat. So as you can see completely removing the old bottom paint is not necessary but every once in a while removing all the paint can expose problems that would be easy to miss otherwise. I will be sanding away about 90% of the bottom gelcoat and then going with a barrier epoxy paint, yes this is a lot of work, but I would rather do that to my 17' Monty then to 40' full keel monster. LOL thank goodness for small boats. Gilbert 1974 M-17 Sagitta -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of August Trometer Sent: Friday, March 23, 2012 10:44 AM To: 'For and about Montgomery Sailboats' Subject: Re: M_Boats: Bottom paint An "Ablative " paint slufs off over time keeping the bottom relatively clean, and is mostly gone. A hard bottom "Epoxy" paint has anti fouling in it and when it's gone, you still have the epoxy paint. After a number of years the build-up has to be COMPLETELY sanded off, the ablative just needs a light sanding. YOUR CHOICE - do you like sanding? -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of W David Scobie Sent: Friday, March 23, 2012 10:30 AM To: For and about Montgomery Sailboats Subject: Re: M_Boats: Bottom paint rick: i can't remember from prior posts if you keep your boat in-water for extended periods? if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters. larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint. :: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com --- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
We got sick of supporting bottom paint on our Nor'Sea, so we have opted out on the Montgomery. On the last trip to the San Juans (I think 18 days in Puget Sound) we got a little slime, but we could rinse it off with a cloth. Havasu and its week worth of quagga mussel larvae was a little more intense, but an abrasive pad cleaned the little guys off (easy for me because my wife did it). Once you put on bottom paint, I think you are pretty much stuck with it, so think about whether you will ever be in a fouling environment for more than a few weeks. Tom On Mar 23, 2012, at 7:29 AM, W David Scobie wrote:
rick:
i can't remember from prior posts if you keep your boat in-water for extended periods?
if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters.
larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint.
:: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com
--- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
I agree with this sentiment. If you have a pristine bottom (I know where you dirty old men are going with this...), my vote is to leave it that way. We keep our late model jerry-built M17 in a slip at the south end of Lake Pend Oreille for 5-6 months. I clean the bottom in the slip maybe once during the season (I wrote up how I do this in SCA # 57), then clean it again in the slip just before I pull it out in the fall (both times with green pads), that way I've just got a bit of cleanup to do over the winter when it's snug in my shop. I've stripped the bottom of an M17 using the method Larry recommends in an earlier post. That's the last time I want to do that, and I suspect initially coating then occasionally re-coating with bottom paint is no treat. To each his own, as they say, but I believe letting well enough alone except in extreme cases makes Jack a relaxed sailboat owner. t On Fri, Mar 23, 2012 at 12:54 PM, Tom Jenkins <tjenk@gte.net> wrote:
We got sick of supporting bottom paint on our Nor'Sea, so we have opted out on the Montgomery. On the last trip to the San Juans (I think 18 days in Puget Sound) we got a little slime, but we could rinse it off with a cloth. Havasu and its week worth of quagga mussel larvae was a little more intense, but an abrasive pad cleaned the little guys off (easy for me because my wife did it). Once you put on bottom paint, I think you are pretty much stuck with it, so think about whether you will ever be in a fouling environment for more than a few weeks.
Tom
On Mar 23, 2012, at 7:29 AM, W David Scobie wrote:
rick:
i can't remember from prior posts if you keep your boat in-water for extended periods?
if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters.
larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint.
:: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com
--- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
Tom, is there an y message in using "pristine bottom", dirty old men", and "jerry" in the same paragraph? jerry ----- Original Message ----- From: "Tom Smith" <openboatt@gmail.com> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Friday, March 23, 2012 3:58 PM Subject: Re: M_Boats: Bottom paint I agree with this sentiment. If you have a pristine bottom (I know where you dirty old men are going with this...), my vote is to leave it that way. We keep our late model jerry-built M17 in a slip at the south end of Lake Pend Oreille for 5-6 months. I clean the bottom in the slip maybe once during the season (I wrote up how I do this in SCA # 57), then clean it again in the slip just before I pull it out in the fall (both times with green pads), that way I've just got a bit of cleanup to do over the winter when it's snug in my shop. I've stripped the bottom of an M17 using the method Larry recommends in an earlier post. That's the last time I want to do that, and I suspect initially coating then occasionally re-coating with bottom paint is no treat. To each his own, as they say, but I believe letting well enough alone except in extreme cases makes Jack a relaxed sailboat owner. t On Fri, Mar 23, 2012 at 12:54 PM, Tom Jenkins <tjenk@gte.net> wrote:
We got sick of supporting bottom paint on our Nor'Sea, so we have opted out on the Montgomery. On the last trip to the San Juans (I think 18 days in Puget Sound) we got a little slime, but we could rinse it off with a cloth. Havasu and its week worth of quagga mussel larvae was a little more intense, but an abrasive pad cleaned the little guys off (easy for me because my wife did it). Once you put on bottom paint, I think you are pretty much stuck with it, so think about whether you will ever be in a fouling environment for more than a few weeks.
Tom
On Mar 23, 2012, at 7:29 AM, W David Scobie wrote:
rick:
i can't remember from prior posts if you keep your boat in-water for extended periods?
if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters.
larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint.
:: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com
--- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
-- I am using the free version of SPAMfighter. We are a community of 7 million users fighting spam. SPAMfighter has removed 6323 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this message
You may draw your own conclusions big boy... t On Fri, Mar 23, 2012 at 4:15 PM, jerry montgomery <jerry@jerrymontgomery.org> wrote:
Tom, is there an y message in using "pristine bottom", dirty old men", and "jerry" in the same paragraph?
jerry ----- Original Message ----- From: "Tom Smith" <openboatt@gmail.com> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Friday, March 23, 2012 3:58 PM
Subject: Re: M_Boats: Bottom paint
I agree with this sentiment. If you have a pristine bottom (I know where you dirty old men are going with this...), my vote is to leave it that way. We keep our late model jerry-built M17 in a slip at the south end of Lake Pend Oreille for 5-6 months. I clean the bottom in the slip maybe once during the season (I wrote up how I do this in SCA # 57), then clean it again in the slip just before I pull it out in the fall (both times with green pads), that way I've just got a bit of cleanup to do over the winter when it's snug in my shop.
I've stripped the bottom of an M17 using the method Larry recommends in an earlier post. That's the last time I want to do that, and I suspect initially coating then occasionally re-coating with bottom paint is no treat.
To each his own, as they say, but I believe letting well enough alone except in extreme cases makes Jack a relaxed sailboat owner. t
On Fri, Mar 23, 2012 at 12:54 PM, Tom Jenkins <tjenk@gte.net> wrote:
We got sick of supporting bottom paint on our Nor'Sea, so we have opted out on the Montgomery. On the last trip to the San Juans (I think 18 days in Puget Sound) we got a little slime, but we could rinse it off with a cloth. Havasu and its week worth of quagga mussel larvae was a little more intense, but an abrasive pad cleaned the little guys off (easy for me because my wife did it). Once you put on bottom paint, I think you are pretty much stuck with it, so think about whether you will ever be in a fouling environment for more than a few weeks.
Tom
On Mar 23, 2012, at 7:29 AM, W David Scobie wrote:
rick:
i can't remember from prior posts if you keep your boat in-water for extended periods?
if you don't keep your boat in-water for more than than about a month at a time consider one of the hard and slick bottom coats. larry yake uses this type of product on his M17, CORN DOG. i'm not sure the product or the details on how it stands up to long periods in water. larry does keep his boat in fresh water during the summer when he is not sailing the san juan and northern canadian waters.
larry please share details and this time i'll save your information for my own future boat projet as 'what you did' is what i'm going to do when i decide to get under my M17 SWEET PEA and remove all the flaking bottom paint.
:: Dave Scobie :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com
--- On Fri, 3/23/12, Rick Davies <jdavies104@gmail.com> wrote:
My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting?
Thanks,
Rick M17 #633 Lynne L
-- I am using the free version of SPAMfighter. We are a community of 7 million users fighting spam. SPAMfighter has removed 6323 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len
The Professional version does not have this message
Ablative is what I used. The first time I painted the bottom I put on 7 coats of Epoxy Barrier paint followed by 2 coats of black Micron Extra. That was three years ago. I pulled SeaFrog out for the hurrican season last year and painted it again although it probably could have gone another season. All I did was give it a good pressure washing and then went over it with a green scrubby. Nasty job. But it got everything off without taking a lot of the old paint with it. I then painted it with green Micron Extra. I alternate the color so I can see when it gets through the most recent coat and not all the way thru all coats. I keep SeaFrog in the water for anywhere from 5 to 9 months. If the bottom gets any build up, it's pretty easy to anchor it in waist deep and give a once over with a brush. I'm sure using the ablative has performance issues that wouldn't be found with a clean waxed bottom but I don't trailer every time I use the boat. I have a cheap slip in a close knit marina. Joe ----- Original Message ----- From: Rick Davies To: M BoatsForum Sent: Friday, March 23, 2012 9:21 AM Subject: M_Boats: Bottom paint My boat has ablative copper bottom paint that is over five years old, and beginning to wear off. One boatyard has suggested removing it with a pressure washer that uses very hot water rather than sanding. Does anyone have any experience with this, or comments as to whether it's a good idea or not? Any possibility of damage to the surface? Would it still have to be sanded before painting? Thanks, Rick M17 #633 Lynne L
participants (8)
-
August Trometer -
Gilbert Landin -
jerry montgomery -
Joe Murphy -
Rick Davies -
Tom Jenkins -
Tom Smith -
W David Scobie