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Product Details

Pettit Protect High Build Epoxy Primer 4700/4701 is a heavy-duty, two-part epoxy-polyamide coating that may be used on almost any part of your boat. This versatile primer is excellent for not only preventing and repairing osmotic blisters, but is also equally effective at protecting underwater metals from corrosion.

Pettit Protect epoxy primer forms a tight, high build, durable chemical resistant film. The complete coating system is resistant to water, many industrial chemical fumes, and very humid environments. It is ideally suited to many commercial and pleasure craft applications and has excellent durability in exterior exposures, although, like most epoxies, it will chalk if not topcoated.

Tech Specs
DRY TIME at Substrate Temperature To Recoat To Paint To Launch
90 Degrees F 2-16 hours3-6 hours48 hours
70 Degrees F 3-18 hours5-8 hours72 hours
50 Degrees F 6-24 hours7-10 hours120 hours
Info & Guides
      PHYSICAL DATA
  • VEHICLE TYPE.....Epoxy/Polyamide
  • FINISH.....Low Luster
  • COLOR.....Light Gray
  • COMPONENTS....2
  • MIX RATIO (A/B)...3 to 1 (by volume)
  • CURING MECHANISM....Chemical Cure
  • SOLIDS (theoretical)
    By weight.....71 +or- 2 percent
    By volume....56 +or- 2 percent
  • COVERAGE.....225 sq. ft/gal.
  • VOC....378 g/l max. (admixed)
  • FLASH POINT....80 degrees F APPLICATION DATA
  • METHOD.....Brush, Roller, Airless or Conventional Spray
  • INDUCTION PERIOD....15 minutes at 70 degrees F
  • NUMBER OF COATS....3 min.
  • DRY FILM THICKNESS PER COAT.....4 mils (7.1 wet mils)
  • APPLICATION TEMP (air & substrate).....50 degrees F. Minimum, 90 degrees F. Maximum
  • POT LIFE.... 2.5 hrs. at 90 degrees F
    5 hrs. at 70 degrees F
    10 hrs. at 50 degrees F

        APPLICATION INFORMATION
    Stir both components thoroughly. Mix the two components together in the ratio of 3 parts of Component A to 1 part of Component B by volume. Allow to stand 15 minutes at approximately 70 degrees before using. (Allow to stand at least 30 minutes if temperature is between 50 degrees and 65 degrees F.) Primer may be applied by brush, roller, conventional or airless spray. Thinning is not normally required for brush or roller application, however, small amounts of 97 Epoxy Thinner may be used if necessary to facilitate application. For spraying, use 97 Epoxy Thinner at levels of 5-10 percent by volume to ensure a smooth finish with minimal orange peel. Wet film thickness should be 7.1 mils per coat, which yields 4 mils dry film thickness. A wet film thickness gauge should be used to monitor paint application. Total dry film thickness for a three coat application should be 12 mils minimum for maximum coating performance. If this has not been achieved with three coats, additional coats are recommended until 12 dry mils is reached.

        SURFACE PREPARATION
    Coating performance, in general, is proportional to the degree of surface preparation. Follow recommendations carefully, avoiding shortcuts. Inadequate preparation of surfaces will virtually assure inadequate coating performance.
    Bare Fiberglass: All fiberglass surfaces, regardless of age, should be washed at least twice with Pettit 95 Fiberglass Dewaxer. Change rags frequently to ensure complete removal of wax, mold release, or other contaminants. Sand the surface thoroughly with 60 grit sandpaper and rewash with 95 Fiberglass Dewaxer to remove sanding residue. Apply at least three coats of Pettit Protect High Build Epoxy Primer 4700/4701 following the application and recoat instructions. Finish with two coats of Pettit antifouling paint.
    Blistered Fiberglass: Refer to Pettit Technical Bulletin TB1000 Gelcoat Blister Repair and Prevention Specification for detailed instructions.
    Bare Steel: Sandblast to SSPC-SP 6 Commerical blast, blow off residue with clean, compressed air, and immediately apply three coats 4700/4701 following application and recoat instructions.
    Alternatively, hand sand with 80 grit sandpaper or power hand tool clean, then remove residue with clean compressed air or by vacuuming. Immediately apply one coat of Pettit 6980 Rustlok Steel Primer and let dry to a tack free state (usually 30 minutes to 2 hours, dependent on temperature). Then apply three coats of Pettit Protect High Build Epoxy Primer 4700/4701 following application and recoat instructions. Do not let Rustlok Primer dry longer than 2 hours under any circumstances before applying Pettit Protect High Build Epoxy Primer 4700/4701.
    Bare Aluminum: Sandblast (using non-metallic media) or disc sand the aluminum to clean, bright metal. Wipe clean of residue and immediately apply one thin coat of Pettit 6455/044 Metal Primer. Let dry 8 hours minimum, 48 hours maximum, and apply three coats Pettit Protect High Build Epoxy Primer 4700/4701 following application and recoat instructions.
    Keels - Lead: Disc sand or otherwise abrade surface to bright metal; clean off residue. Apply one thin coat of 6455/044 Metal Primer and allow to dry eight hours. Apply one coat of Pettit Protect High Build Epoxy Primer 4700/4701. Let dry to recoat. Then, if fairing is required, apply Pettit Protect 7000/7001 Epoxy Fairing Compound. Sand smooth with 80 grit sandpaper and follow with two additional coats of 4700/4701 per label directions.
    Keels - Steel or Cast Iron: Disc sand or otherwise abrade surface to bright metal and clean off residue. Apply one coat of 6980 Rustlok Steel Primer, allowing to dry only 1/2 - 2 hours prior to overcoating, no more, no less! Apply one coat of Pettit Protect High Build Epoxy Primer 4700/4701. Let dry to recoat. Then, if fairing is required, apply Pettit Protect 7000/7001 Epoxy Fairing Compound. Sand smooth and follow with two additional coats of 4700/4701 per label directions.
    Previously Primed Surfaces: Pettit Protect High Build Epoxy Primer 4700/4701 may be applied over existing two part epoxy finishes, provided they are in sound condition. Brush-off sandblasting or very heavy sanding with 60 grit sandpaper is required to maintain maximum adhesion. Then apply three coats of 4700/4701 per instructions. Remember, coating performance is only as good as the surface to which it's applied. All existing two package epoxy finishes in poor condition, as well as one package primers and bottom paints, should be removed completely and the appropriate bare system as described above should be followed before using Pettit Protect High Build Epoxy Primer 4700/4701.

    Total dry film thickness is more important than the actual number of coats applied. On metal and fiberglass, if 12 mils total DFT is not achieved with three coats, additional coats are recommended until 12 mils total DFT is achieved.

  • Technical Information

    • Reduces water absorption in fiberglass hulls and prevents osmotic blistering.
    • High film build for maximum protection with fewer coats.
    • Excellent water and chemical resistance.
    • Exceptional protection for steel, aluminum, and other metals.
    • High Performance System for Underwater Running Gear.

    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Reviews for Pettit Protect High Build Epoxy Priming System

    8 of 8 Reviews

    May 16, 2021

    Great Product
    By Ridge Runner from Patterson Creek, WV

    Verified Purchase

    Applied this as instructed and the project came out well. Please note that the dry times and the recoat/ topcoat times are based on hull temps. They are also a guide line. Please download the instructions from Pettit and read thoroughly.

    Bottom Line Yes, I would recommend to a friend

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    April 30, 2019

    Yes and am in the next couple weeks..
    By Ken Sabin from Toledo Ohio

    Verified Purchase

    I used it on 45 year old Hunter 30 ! When I used it I also was able to use EZ-fair to fill blemish between to coats .. oh yea I'll be happy to use this products..

    EZ-Fair
    Morgan 41 classic EZ fair then Pettit protect then 5 gallons of Pettit bottom paint
    EZ-fair with Pettit protect them SR21
    Bottom Line Yes, I would recommend to a friend

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    April 6, 2019

    Does not yeild a smooth finish.
    By Preston from Baton Rouge, La

    Paint DOES NOT make a smooth finish once dried! Will have to sand to smooth out before applying bottom paint! will not level out no matter how thick applied. Leaves brush stroke lines. Although not smooth the paint is very thick and yields a very thick layer in just two coats if applied by brush. Must work quickly and carry a lot of paint on your brush. MUST keep a wet edge. Once applied must move on. Paint small strips going length ways on the boat until it is covered. If you see a run or try to smooth out a rough spot once it starts to dry it will only make it worse, paint is very thick and will glob up. Tired to roll and tip but paint dries to fast and tipping only makes it more rough. Sanding required to get smooth surface. If you are looking for a super high build product and aren't worried about rough surface this product is for you. If you are looking for a very smooth surface without sanding find something else.


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    October 8, 2015

    Don't Bother
    By brooksie from Cape Cod, MA

    May very well do the job (barrier) but will not yeild a smooth finish like other products we have used. Try as we may, several types rollers and tipping, did not result in a suitable finish over which to paint for a smooth bottom job. Very hard sanding as well so be careful what you put this on.

    Bottom Line No, I would not recommend to a friend

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    January 12, 2015

    Unique specific purpose
    By The old goat from Paso Robles, CA

    Verified Purchase

    I plan to use this on the cabinet bottom under a sink to provide a water resistant coating to the particleboard. Previous leaks have warped the board which has been leveled with floor leveling compound. The small container allows me to have enough to cover without the waste of extra coating left over. I had to look hard for this epoxy and container size.

    Bottom Line Yes, I would recommend to a friend

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    May 14, 2014

    Tuff Stuff
    By Cowboy Captain from WASHINGTON, NC

    Verified Purchase

    This is a good high build epoxy primer. Goes on well and covers great. Also seems to sand well. Should seal and hold up well, have not water tested yet, but looking forward. Good price also.

    Bottom Line Yes, I would recommend to a friend

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    May 13, 2012

    Would buy again
    By Balboa 22 from Pensacola, Florida

    Product was well packaged. Went on well following directions. Good coverage and rolled on easy.

    Bottom Line Yes, I would recommend to a friend

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    September 1, 2008

    I would buy this product again and again
    By Big John from Foster, RI

    It works very well if applied following the directions of the manufacture. I used it on the stern board of my old Zociac, to provide a water barrier. I know it would be good as a primer for under water metal parts. I mixed some of the primer with a putty knife. It dried on the knife and I had the devil of a time trying to get it off!

    Bottom Line Yes, I would recommend to a friend

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