Marine Formula

Polyurethane adhesive/sealants form long interlocking chains of molecules when they come into contact with the surfaces to be bonded together. These molecule chains are what forms the bond with the surface (fibreglass, metal, wood, etc.) Marine Formula™ penetrates into the polyurethane adhesive sealant (such as 3M™ Marine 5200) and, through a chemical process, begins the process of breaking the interlocking molecule chains. hen the chains are broken, the adhesive loses its bond with the surface.

Several available products claim to be able to remove 3M™ 5200. Some of these products may be able to remove uncured 3M 5200. However, our research shows that Marine Formula is the only product on the market that will effectively remove cured 3M 5200.

Just remember that there are many variables including temperature, evaporation rates, and product being removed. A one inch piece of 3M™5200 can be removed in as little as two minutes and I removed an air conditioner that was adhered with a one foot+ wide piece of 3M™5200 in 29 nine minutes. DIY magazine removed an engine bracket in less than 30 minutes. We have done large deck jobs by reapplying several times over a weekend. A big help in speeding up a larger job is the use of a wedge to increase lifting pressure that will help Marine Formula™ contact the adhesive or silicone rubber. Marine Formula™ works best above 45°F.

We haven’t done any formal testing on the shelf life of Marine Formula™. The recommended shelf life is five years.

Keep a damp rag on hand and don’t let DeBond Marine Formula™ run to where you might not want it. It will not hurt your gel-coat but will remove decals and decal adhesives as well as soft paints, varnish etc. Just test on an inconspicuous spot with one drop if you are not sure. Soap and water and/or Isopropyl Alcohol will stop the action.

We have found that Marine Formula™ generally will not harm: Gel coat, Clear Coat, Plexiglas, AwlGrip®, Imron®. We do not recommend using this product on Lexan. We strongly recommend that you apply a small amount of Marine Formula™ to an inconspicuous area of your boat’s finish as a test.

Marine Formula™ will not cause hazing or other undesirable effects on Plexiglas. If you are not absolutely sure that your windows are Plexiglas, we suggest that you test the product on a small corner of one window. Marine Formula™ does not work well on Lexan. After using Marine Formula™ to remove the 3M™ 5200 from your Plexiglas windows, you should clean the windows with soap and water to remove excess Marine Formula™.

We have had previous experience with two-part polyurethane paint and found that Marine Formula™ has not had any damaging effect. However, there are so many variables that it is impossible to be 100% sure. There are so many different manufacturers, activators, primers, age of application, environment, etc. that you should make sure with a test before application. It is very simple. Apply a very small amount of Marine Formula™ to an inconspicuous area and leave it for five minutes. If it is incompatible, you will notice a softening almost immediately. Some isopropyl alcohol and/or soap and water will stop the action of Marine Formula™. If there is no softening, Marine Formula™ can be used for your project. Remember that a normal application of Marine Formula™ shouldn’t take over ten minutes even on a relative large removal project. The engine bracket that DIY marine magazine removed took less than 30 minutes.

We just had a call last week from a marine specialist who had installed new cabin windows onto the side of a freshly painted yacht with 3M™ 5200 only 5 days previous to the call. The owners notified them that the painters had not completed a satisfactory application and the windows had to be removed! They knew that the job was all but impossible without irreparable damage to the new windows and wondered if Marine Formula™ would help. They scored the 3M™ 5200 with a razor knife and applied Marine Formula™ before they started removing the screws to allow time to work. Much to their surprise, the windows were removed with no damage to the windows, paint, or boat saving them a considerable amount of time and money. The 3M™ 5200 was even “pealed” from the window frames. Their testimonial will be on our website in the future. Remember to wash the site with a rag with soap and water upon completion of your project and once it is thoroughly dry, you can reapply the adhesive if required.

First, score around the hatches to allow the Marine Formula™ to get a good start in attacking the bond of the 3M™ 5200. This is not essential but if you are working in the hot sunshine, I would attempt to shade the hatch and surrounding area if possible to lessen the evaporation. Apply a small amount of Marine Formula™ around the area. Do another job for ten or fifteen minutes. You should start to see the edge of the 3M™ 5200 releasing. This might be enough to loosen the hatch but it depends on the thickness of the 3M™ 5200 and how well it has bonded. If it is still firm and you are not able to start to work the hatch up; slide some small wedges around the hatch to give some lifting pressure and reapply. We have small plastic wedges available if you can’t find any. Give Marine Formula™ a chance to work. I think that you will find that removal of your hatches will be much easier than the last. After clean up of any 3M™ 5200 residue; just wash with soap and water and dry. It is ready for the new hatch and will not affect any new adhesives. If there is a problem with washing with soap and water, you can also use isopropyl alcohol and a damp cloth.

I have reviewed your request for information on the use of Marine Formula™ by DeBond Inc. on a Douglas Fir planked dory skiff that has been sealed with Sikaflex. We remove Sikaflex polyurethane on a daily basses but I can find no reference in our research on Douglas Fir wood. However, we have people using Marine Formula™ on many soft woods such as Teak with no harm to either the wood or the ability to bond it with new sealant. Here is the suggested procedure:

• I would advise that you try a test on an inconspicuous area or a piece of scrap just to make sure that there are no complications that we haven’t thought of. Please note that if you are not going to paint the skiff, make sure that there is no undesirable changes in coloration that would show through.
• Using a razor knife, score the sealant along the edge to allow Marine Formula™ to start its wicking action. Just apply a bead down the score. You might have to reapply because of the porosity of the wood. Because those open pours of the wood give the sealant more grip, it will generally be harder to remove than on other surfaces so give it some time to work.
• Once you remove the sealant, wipe down the wood with rubbing or denatured alcohol (which ever one is best for the wood) which will kill the action of the Marine Formula™. The final preparation that I would suggest would be to clean it with a soapy rag and rinse. Once it dried thoroughly it will be ready to reseal. I am sure that Marine Formula™ by DeBond Inc. can save you many hours of work.

Marine Formula™ will not harm the hull or your transducer, and will remove the 3M™ 5200. That being said, however, sealing your transducer with 3M™ 5200 is not a bad idea at all. 3M™ 5200 forms the best possible seal with the hull. It is a much better seal then you will get with hard epoxy. The reason that the hard epoxy is recommended is that it can be removed by conventional means. Without Marine Formula™, the 3M™ 5200 is permanent. Accordingly, I would recommend that you leave the transducer sealed with 3M™ 5200 until you are ready to remove it from the hull. At that time, use Marine Formula™ to remove it. The exception to this advice is that if you are attempting to install an interior mounted transducer and the 3M™ 5200 is not dense enough to allow the transducer to operate properly, then you will need to use the Marine Formula™ to remove the 3M™ 5200 and reseal the transducer with the hard epoxy.

Because of the softening of black butyl rubber caulk to the heat of the sun, try to do the job in a cooler part of the day or at least provide some shade. A real concern which is easily controlled is the migration of Marine Formula™ into places that you don’t want it. You are trying to clean the windshield not remove it. Try spraying Marine Formula™ on a rag and wiping the rubber off. If you have to spray directly onto thicker pieces of rubber, control any runs with a rag. A simple wipe with denatured or isopropyl alcohol and/or soap and water will stop the action. If Marine Formula™ is going to stay in contact with the painted surface for any length of time, put a drop of Marine Formula™ on an inconspicuous area for a few minutes to check for any softening. A wipe with a soapy rag will clean it up. We have no problem with 99% of two-part marine paint but it is always better to be safe.