Ultra-Kote is a hard-film antifouling paint with possibly the highest copper content of any bottom paint at 76%. Its fast-drying, high-solids formula provides excellent long-term protection against organisms such as barnacles and zebra mussels. Designed for maximum performance in moderate to severe fouling conditions.
Interlux upped the amount of cuprous oxide and improved its color stability, making this a great choice for fiberglass, steel, and wood boats in brackish, fresh, and salt waters where severe fouling is the norm. Fast drying formula lets you paint and launch in the same day.
Available in Black and Green colors. Gallon size only.
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APPLICATION AND USE
PREVIOUSLY PAINTED SURFACES: In Good Condition: Remove loose paint and contamination by sanding the entire surface with 80-grit wet/dry sandpaper. In Poor Condition: Remove all old antifouling paint completely using Interstrip 299E for wood and fiberglass, or by sandblasting to near-white metal for steel.
BARE FIBERGLASS: Begin by scrubbing well using soap and water and a stiff brush. Rinse with fresh water and allow to dry. Remove any mold release wax with either Interlux Fiberglass Surface Prep YMA601V or Fiberglass Solvent Wash 202 following the instructions on the product label. Fill any surface imperfections with Interlux Watertite, following all instructions on the label.
BARE FIBERGLASS - NO SANDING SYSTEM: Clean the surface following the procedure above. Apply 1 coat of Interprotect 2000E or Fiberglass No-Sand Primer, following the instructions on the label or datasheet. Follow overcoating guidelines for the primer, apply at least two coats of Ultra-Kote allowing for appropriate drying time.
BARE FIBERGLASS - SANDING SYSTEM: Clean the surface following the procedure above. Sand with 80-grit sandpaper, and remove sanding residue completely. Apply at least two coats of Ultra-Kote allowing for appropriate drying time.
BARE FIBERGLASS - BLISTER PREVENTION SYSTEM: Clean the surface following the procedure above. Sand with 80-grit sandpaper, and remove sanding residue completely. Apply Interprotect 2000E to a thickness of 10 mils. Apply at least two coats of Ultra-Kote allowing for appropriate drying time.
BARE WOOD: Sand with 80-grit sandpaper. Remove sanding residue. Apply the first coat of Ultra-Kote thinned 10% with Special Thinner 216 or Brush-Ease 433. Fill seams, if necessary, with Seam Compound Brown 30. Apply two or more coats of Ultra-Kote un-thinned, allowing for the appropriate drying time.
UNDERWATER METALS: Contact Interlux for further details. Do not use on aluminum.
Specific Gravity: 2.34
Volume Solids: 63%
Typical Shelf Life: 3 yrs
VOC (As Supplied): 327 g/L
Unit Size: 1 US Gallon
Number of Coats: 2-3 minimum, bare wood 3 coats (first coat thinned)
Substrates: Fiberglass and Wood; contact Interlux if painting on steel or metal; not for use on aluminum boats
Proven performance & long-term protection.
Economical solution for medium to high fouling areas.
Durable, scrubbable finish with excellent color stability and excellent film build to prevent wear-through.
Low VOC content limits solvent emissions into the atmosphere.
Compatible with most other antifoulings and perfect for brush/roller and airless spray methods.
TRANSPORTATION, STORAGE AND SAFETY INFORMATION
TRANSPORTATION: Ultra-Kote should be kept in securely closed containers during transport and storage.
STORAGE: Exposure to air and extremes of temperature should be avoided. For the full shelf life of Ultra-Kote and Ultra with Biolux to be realized ensure that between use the container is firmly closed and the temperature is between 5 deg C/41 deg F and 35 deg C/95 deg F. Keep out of direct sunlight.
DISPOSAL: Container Disposal: Triple Rinse (or equivalent). Then offer for recycling or reconditioning, or puncture and dispose of in a sanitary landfill or by other procedures approved by state or local authorities. Pesticide Disposal: Open dumping is prohibited. Pesticide, spray mixture or rinsate that cannot be used or chemically reprocessed should be disposed of according to procedures approved by Federal, state, or local disposal authorities.
Antifoulings should only be wet sanded. Never dry sand or burn-off old antifoulings. Spraying of antifouling paints is prohibited in Canada.
Number Of Parts:
Copper AF Paint
Is this paint compatible with interlux VC17. If not what product do you recommend if any that would not require removal of the VC 17Thank YouEd
No you would need to remove the VC17 to go over it with another paint.
JD Tech Team
is it OK to apply ULTRA KOTE over ULTRA???
Suggest you look at Interlux's paint compatibility chart.
Yes. It worked very well
Can you mix Ultra & Ultra Kote into one paint mix or paint each separately?
I would not mix two different paints together even though their characteristics are similar. The copper content is not the same. You may run in to application problems and the two paints mixed may not protect the boat bottom the same as applying just Ultra Kote. Even though you may save money on mixing the paints, in the long run the protection may be less than satisfactory. Also, I would not apply two different paints separately in the same season. This question should go to Interlux customer service.
We had the Ultra on first then Interlux stop making it..so we just painted over it with the ultra kote. Looks and works great .
Currently I am using Micron Extra. Can I use Ultra antifoul on top and is it compatible? Is Ultra also a ablative type of paint?
Ultra is a hard bottom paint, it can be applied over Micron Extra, you will need to do a heavy sanding first.
I have an Alberg 35, how much paint will I need to cover the bottom?
My thought is to cover it well, really well about 2 coats, 3 gallons.I used gallon and a quarter on 20 foot proline. In water since October 2012. I try and wipe it down every 2 weeks with green scotchbrite pad and plastic ice scraper and it still looks good. Hope to get 3 years on it.
I live in Tennessee so we have warm watter for much of the year. Algae is the main problem. I used 3 coats of Ultra as directed on a fiberglass bottom sailboat, rolled on and dried over a week before putting it in the water. It came off like an ablative. A little over a year later I need a complete new bottom job. So what could be the deal?
I'm not sure what the problem is. Maybe the warmer water makes a big difference. It's more likely the bottom wasn't sanded and cleaned well enough before the application. I am in WA and in much colder salt water (50 degrees). Algae and seaweed are both problems. I put 3 coats on my 14' runabout, which lives in the water 100% of the time. I'm at 3 years now and it will need to be redone this year. Most of the bottom is in good shape but high wear areas, like at the planing points are wearing through.
Guys have been using the Ultra for years at HIYC Nashville, and have been getting 5 or more years out of it. It has been the best performing paint so far. But....I noticed on the last boat I put it on (summer 2011), it was coming off in the water when scrubbed. I do not know if they have changed something in the paint or what. The water has been getting warmer the last couple of summers and a new, more tenacious type of algae starts growing on the boats by August. This requires more aggressive scrubbing than we have done in the past. Maybe this is the difference. Before 2011, when I would pull boats for new coats of Ultra, there would still be plenty of old Ultra still on the boat(after 5 yrs). After it gets pretty thick, from multiple bottom jobs, it begins to slough off. To prevent this, the old paint had to be sanded down quite a bit. If they have changed the formulation to be a little softer, it may be a good thing (if it is not too soft).Some of the racing boats here, are changing from VC17 to Interlux Bottomkote Racing Bronze. It looks like VC17 when put on but is supposed to last multiple seasons. It has less copper than Ultra. It does not seem to come off in the water when scrubbed. It goes on thin and smooth so buildup is not a problem. We will see how long it works. We may need to try something else.
My 36 foot boat is on Melton Hill Reservoir. I put three coats of Ultra over three coats of Interprotect 2000 on the fiberglass hull 14 months ago. I have not experienced any growth or visible loss of the Ultra. Melton Hill does not have the same flora growth rate I experienced in Ft. Loudon Reservoir so I am not certain if the water quality has anything to do with my lack of growth and/loss of product. I could not be happier with the performance of the Ultra.
What is the difference between Interlux Ultra blue 3669G and 3669F?
The "F" just stands for "Freeboard" which is the height of a ship's deck above the water level, so it's referring to the LOA or estimated area to be painted, the 3669g "G" stands for gallon, they're both the same product.
what roller nap should be used with Ultra. we have 30' cat so two hulls and thinking 2 thin coats on each. any advise?
with the Ultra if reall really helped to thin a bit, mix well and then strain into the roller aray. I jus used a fine form roller and applied three thin coats. It lasted 2 years with no problems.
I use 6 inch foam rollers but a short nap roller should do as well. The foam swells up so I have to use 2 or 3 for each coat., to keep the paint rolling on smooth.
I've used Ultra on my 46' trawler for years and swear by it. I apply using a thick nap roller to hold plenty of paint to get a nice even coat. I typically only do one coat, and apply second coat at waterline and a foot down for durability. Works great- no growth - other than slime when I don't run. Good luck!
I store my boat on a lift, but often leave the boat in the water for weeks at a time. Is Ultra a good bottom protector for my boat?
Depends on your location and weather. Here in the Pacific Northwest Ultra is the best for our conditions.Ken
So far (2 month) there is no grow on the bottom of my boat. However I don't like this paint for a different reason. Contrary to the label it has ultra fast drying time. I painted boat at 70F and it was drying ridiculously fast, touch dry in about 5 minutes, so the paint didn't have enough time to smooth and as a result the surface is less than perfect. Also because of fast drying a roller that I used was actually pulling the paint - you roll forward and than back and on way back you really feel how roller sticks to the paint! I will not buy this paint again and can't recommend it.
I used the ultra on a steel hull and if applied properly should give you a good 3 year interval before you will have to repaint your hull.
Ultra should not be out of the water for more than 60 days so it may not be best for your application. If you only leave it in the water several weeks at a time a paint like Pettit Vivid might be adequate and drying out will not hurt it.
Great bottom paint
Easily applied, goes on smooth, great wearability
I live in the Florida Keys and barnacles are always a problem. I painted the bottom of my 24 proline two years ago. It stays in the water year round at the dock. Not one barnacle when I pulled it out recently. Good stuff.
Ramrod Key Fl
I'm sorry,... we LOVE this product..
I just had to disagree with the reviewer that didn't like Ultra. We are about to repaint after 3 years on our old bottom, in warm South Texas waters. We are just now getting hard growth, and we went algae free for about 2 years. I'm not sure I could ask for more of a paint. For the poster that had a problem, I'd have to think he got a bad batch of paint.
Works great in the Pacific
We used this over interlux interprotect on a sailboat that has a slip in the Morro Bay State Park Marina. Silty, dirty, slow moving, and variable salinity water. Growth around us (other boats and docks) is substantial. We spent the money and use this counter to the recommendations of the local yard.It's been three years now and we finally noticed some plant growth on the tiller. Diver comes on Friday. Yes, I said three years.A+
Morro Bay, CA
$50/Gal Bottom Paint Works Better
I tried Interlux Ultra on four different boats and had horrible results on all of them. I have used dozens of bottom paints over the last 40 years and I have never seen a bottom paint be so completely ineffective. It is a premium priced product and performs much worse than the cheapest bottom paints. Some International Paints "Interlux" products are good, but this is not one of them, or they sold me a bad lot of 10 gallons. The photos are of 7 months growth in New England waters.