Pettit Protect High Build Epoxy Priming System
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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.
| DRY TIME at Substrate Temperature | To Recoat | To Paint | To Launch |
|---|---|---|---|
| 90 Degrees F | 2-16 hours | 3-6 hours | 48 hours |
| 70 Degrees F | 3-18 hours | 5-8 hours | 72 hours |
| 50 Degrees F | 6-24 hours | 7-10 hours | 120 hours |
- PHYSICAL DATA
By weight.....71 +or- 2 percent
By volume....56 +or- 2 percent
5 hrs. at 70 degrees F
10 hrs. at 50 degrees F
- APPLICATION INFORMATION
- SURFACE PREPARATION
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
May 16, 2021
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.
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April 30, 2019
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..
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April 6, 2019
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
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.
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January 12, 2015
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.
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May 14, 2014
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.
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May 13, 2012
Product was well packaged. Went on well following directions. Good coverage and rolled on easy.
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September 1, 2008
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!
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