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Milk Paint Additives & Surface Preparation
RMP Finishes milk paint additives help you get the most from your Real Milk Paint projects. From tricky, glossy surfaces to exterior furniture and ultra-smooth finishes, these specialty additives improve adhesion, leveling, and durability while keeping your finish low-odor, nontoxic, and easy to work with.
Explore Our Additives
Ultra Bond Adhesion Promoter
Ultra Bond helps RMP Finishes Real Milk Paint grip surfaces that would normally resist traditional milk paint.
Mix 1 part Ultra Bond to 4 parts mixed paint for the first coat only to improve adhesion on slick, previously finished, or unknown surfaces. The water-based, low-odor formula dries clear and contains no VOCs, so you get stronger bonding without sacrificing an eco-conscious finish.
Anti-Foam Agent
Anti-Foam Agent reduces bubbles and foam when you mix Real Milk Paint, especially with deeper hues or when using high-speed mixers.
A few drops help pigments disperse more evenly in water, so the paint levels better and you can start brushing or rolling sooner.
This food-grade additive will not change the color of your finish; it simply smooths the mix for a more consistent, professional-looking result.
Outdoor Additive
Outdoor Additive turns Real Milk Paint into a tougher option for exterior projects. The finely milled, borate-based powder blends easily into your mixed paint, adding UV resistance, extra water repellency, and mildew inhibition.
It also acts as a knot blocker, helping stop tannin stains from cedar and pine from bleeding through. Paired with Outdoor Defense Oil as a topcoat, it creates a breathable finish that fades gently rather than cracking or peeling.
Application Tips for Milk Paint Additives
Getting the most from RMP Finishes additives starts with good prep and simple mixing habits.
- Always start by cleaning the surface with a non-residue cleaner and giving it a light scuff sand so Real Milk Paint can bond properly.
- Mix your paint first, then add the chosen additive in the recommended amount, stirring thoroughly so everything blends evenly.
- Work in thin, even coats and give each layer time to dry before adding another or applying a topcoat.
- If you are unsure how a surface will react, test on a small, hidden area first. This way, you can adjust your mix, sheen, or number of coats before committing to the full project.
Which Additive Do You Need?
| Product | Best For | Key Benefit |
| Ultra Bond Adhesion Promoter | Glass, metal, laminate, varnished, or painted surfaces | Reliable adhesion on slick or unknown finishes |
| Anti-Foam Agent | Mixing any Real Milk Paint color, especially deep tones | Smoother, bubble-free mix and faster, easier application |
| Outdoor Additive | Exterior wood furniture, doors, trim, garden pieces | Added UV, moisture, mold, and tannin resistance outdoors |
Why Customers Choose RMP Finishes
- Nontoxic, low-odor formulations that complement Real Milk Paint
- Additives engineered specifically for better adhesion, mixing, and durability
- Clear usage guidelines and how-to resources for confident results
- Trusted by furniture refinishers, woodworkers, and DIYers who want a natural, long-lasting finish
FAQs About Milk Paint Additives
How much Ultra Bond should I use?
For most projects, mix 1 part Ultra Bond to 4 parts already-mixed Real Milk Paint and use it only in the first coat on slick or previously finished surfaces. Subsequent coats can be applied without Ultra Bond once the base layer has dried.
Will Anti-Foam Agent change the look of my paint?
No. Anti-Foam Agent is clear and used in very small amounts, so it will not alter the color or sheen of your finish. It simply reduces bubbles and helps pigments disperse more evenly for a smoother, more consistent coat.
Do I need Outdoor Additive for all exterior projects?
Outdoor Additive is strongly recommended for porous exterior surfaces such as wood furniture, doors, and trim. It boosts resistance to weather, moisture, mold, and tannin staining. For best results outside, combine it with an appropriate exterior topcoat like Outdoor Defense Oil.
Ready to Upgrade Your Finish?
Protect and refine your next project with targeted support from RMP Finishes milk paint additives. Explore Ultra Bond, Anti-Foam Agent, and Outdoor Additive to find the right combination for smoother application, stronger adhesion, and longer-lasting beauty.