Total Price:
Add to CartAluma Protect is a 2 part strontium chromate primer designed to form the ideal barrier coat over roughed bare aluminum. This is the appropriate epoxy to use when aluminum has been sandblasted, sanded or ground so that a tooth is present. For smooth aluminum, choose Pettit Metal Primer.
AlumaProtect provides maximum resistance to fresh or salt water, thus eliminating corrosion. This complete coating system resists water, industrial chemical fumes, and very humid environments. Intended to be used as a primary coat over bare aluminum hulls and outdrives. AlumaProtect 4400/4401 will chalk if not topcoated. Two coats are recommended over sandblasted aluminum. Then overcoat with Pettit Protect for optimum results before finishing antifouling paint.
Pettit Epoxy Thinner: Thinning is not usually needed, but for slow drying in hot weather or windy conditions, small amounts may be added. Do not add more than 10% by volume.
Specifications:
APPLICATION DATA METHOD: Brush, Roller, Airless or Conventional Spray
NUMBER OF COATS: 1 or more
DRY FILM THICKNESS PER COAT: 1 mils (3.6 wet mils)
COVERAGE: 450 sq. ft/gal.
APPLICATION TEMP: 50°F Min. / 90°F Max.
THINNER: 97 Epoxy Thinner
| Temp | To Recoat | To Launch | To Bottom Paint |
| 90°F | 1-24 HR | 48 HR | 1-8 HR |
| 70°F | 4-96 HR | 72 HR | 4-16 HR |
| 50°F | 8-192 HR | 120 HR | 120 HR |
*If these recommended intervals are exceeded, sand thoroughly with 80 grit sandpaper before recoating or applying bottom paint.
PREVIOUSLY PAINTED SURFACES: Aluma Protect Aluminum Epoxy Primer 4400/4401 may be applied over existing two part epoxy fi nishes, 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 one or two coats 4400/4401 per instructions. Remember, coating performance is only as good as the surface to which it’s applied. All existing two package epoxy fi nishes in poor condition, as well as all one package primers and bottom paints, should be removed completely and the appropriate bare aluminum system as described above should be followed before using Aluma Protect Aluminum Epoxy Primer 4400/4401. Aluma Protect Aluminum Epoxy Primer is not recommended for use over antifouling paints.
STEEL HULLS: Not recommended - use Pettit Protect 4700/4701 for steel surfaces.
ALUMINUM: Sandblast (using non-metallic media) or disc sand the aluminum to clean, bright metal. Wipe clean of residue and immediately apply one coat of Aluma Protect Aluminum Epoxy Primer 4400/4401. At 70°F let dry 4 hours minimum, 96 hours maximum, and apply an additional coat followed by two coats of Pettit Protect High Build Epoxy Primer 4700/4701 following application and recoat instructions.
APPLICATION INFORMATION: Stir both components thoroughly. Mix the two components together in the ratio of 1 part of Component A to 1 part of Component B by volume. Allow to stand 15 minutes at approximately 70° before using. (Allow to stand at least 30 minutes if temperature is between 50° and 65°F) May be applied by brush, roller, conventional or airless spray. Thinning is not normally required for application, however, small amounts of 97 Epoxy Thinner may be used if necessary to facilitate application. Wet fi lm thickness should be 3.6 mils per coat, which yields 1.0 mil dry fi lm thickness. A wet fi lm thickness gauge should be used to monitor paint application. One or two coats of Aluma Protect 4400/4401 should be overcoated with Pettit Protect 4700/4701 to provide a corrosion and chemical resistant barrier for use on all aluminum craft and surfaces. 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. Degrease aluminum by wiping with 97 Epoxy Thinner. Sandblast, sand or grind the surface to achieve a good adhesion profi le.
Pettit Technical Bulletin Underwater Metal Systems
What is Pettit Aluma Protect Epoxy Barrier Coat Marine Primer used for?
Pettit Aluma Protect Epoxy Barrier Coat Marine Primer is a two-part strontium chromate epoxy primer designed as a barrier coat over properly prepared bare aluminum. It is intended for aluminum hulls and outdrives and provides a bonding surface before applying additional protective coatings and antifouling paint.
Can Pettit Aluma Protect be used on smooth aluminum?
No. Aluma Protect is intended for roughed bare aluminum with an appropriate adhesion profile created by sandblasting, sanding, or grinding. For smooth aluminum, the product information recommends Pettit Metal Primer instead. Aluminum should be cleaned and prepared to clean, bright metal before applying Aluma Protect.
How do I mix Pettit Aluma Protect before application?
Thoroughly stir both components, then mix Component A and Component B at a 1:1 ratio by volume. Allow the mixture to stand for 15 minutes at approximately 70°F before use. At temperatures between 50°F and 65°F, allow it to stand for at least 30 minutes before application.
How many coats of Pettit Aluma Protect should be applied to aluminum?
Apply one or two coats of Pettit Aluma Protect according to the application instructions. The specified wet film thickness is 3.6 mils per coat, producing a 1.0-mil dry film thickness. Two coats are recommended over sandblasted aluminum, followed by Pettit Protect 4700/4701 before finishing with antifouling paint.
What temperature range is recommended for applying Pettit Aluma Protect?
Pettit Aluma Protect has a recommended application temperature range of 50°F to 90°F. Drying and recoat times vary with temperature. If the recommended recoat or bottom-paint intervals are exceeded, the surface should be thoroughly sanded with 80-grit sandpaper before recoating or applying bottom paint.
Can Pettit Aluma Protect be applied over existing coatings?
Aluma Protect may be applied over sound existing two-part epoxy finishes after brush-off sandblasting or very heavy sanding with 60-grit sandpaper. Poor-condition two-part epoxies, one-package primers, and bottom paints should be completely removed before following the bare-aluminum preparation system. Aluma Protect is not recommended over antifouling paints.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Pettit Protect White High Build Epoxy Barrier Primer Coat Pettit Protect Epoxy Primer is a heavy-duty, dual component epoxy coating best used where maximum resistance to fresh or salt water is a...
Pettit Protect Gray High Build Epoxy Barrier Primer Coat Pettit Protect Epoxy Primer is a heavy-duty, dual component epoxy coating best used where maximum resistance to fresh or salt water is a...
Choose Options
Pettit Prop Coat Barnacle Barrier Aerosol - 20 oz. Pettit Barnacle Barrier provides easy to use aerosol spray protection for bare metals including steel, stainless steel, cast iron, copper, bronze,...
Interlux Interprotect Epoxy Barrier Coat Kit - Gray Guard against water intrusion with Interlux 2000E Interprotect, a two-part epoxy coating formulated to protect fiberglass hulls from blistering...
Choose Options
