Messmer's UV+ Natural Cedar: High-Solids Protection for Montana Wood

Messmer’s UV+ Natural Cedar delivers 100-200 sq ft coverage per gallon on rough wood and 150-250 sq ft on smooth surfaces. The 50-60% solids content fills wood pores for water repellency without wax or paraffin additives, while trans-oxide pigments block UV rays.

Skip this if you’re looking for a cheap topcoat. UV+ penetrates rather than forming a surface film, which means no peeling or flaking down the road. The trade-off? Higher upfront cost and non-returnable status due to hazardous material shipping regulations.

Coverage Specs and Application Windows

Coverage runs 100-200 sq ft per gallon on rough-sawn cedar and 150-250 on smooth-planed surfaces. That’s honest coverage — not the inflated numbers you see on retail brands that assume perfect conditions and paper-thin coats.

Specification	Value
Coverage (rough wood)	100-200 sq ft/gallon
Coverage (smooth wood)	150-250 sq ft/gallon
Application temperature	45°F to 95°F
Surface temperature	50°F to 90°F recommended
Solids content	50-60%
Flash point	104°F
Cleanup	Mineral spirits, lacquer thinner, or MEK

The 45°F minimum application temperature matters in Montana where morning temps can drop even in August. Start your project midday when the wood surface warms above 50°F for best penetration.

Avoid applying in direct sunlight on hot days — the stain flash-dries before it can penetrate properly. Remove excess material that hasn’t penetrated within 30-45 minutes. This isn’t paint. If it’s pooling on the surface, you’re wasting product.

High Solids Performance Without the Wax

The 50-60% solids content delivers water repellency by filling wood pores, not by creating a waxy barrier. Unlike wax-based stains, UV+ allows better penetration and easier recoating without stripping.

Trans-oxide pigments provide the UV blocking. These aren’t the cheap iron oxide pigments that turn everything rust-orange. Trans-oxides maintain color clarity while screening out the UV wavelengths that break down lignin.

The semi-transparent pigment enhances wood grain without obscuring it. Clear finishes offer no UV protection — they’ll leave your cedar gray within a season. UV+ splits the difference between protection and aesthetics.

Drying Times and Project Reality

Drying Stage	Time
To touch	4-24 hours
Rain/traffic ready	24-48 hours
Full cure	Up to 2 weeks

That 4-24 hour touch-dry window depends entirely on temperature and humidity. In Montana’s dry climate, you’re typically looking at the shorter end. But don’t put furniture back or allow foot traffic for 24-48 hours minimum.

Full cure takes up to 2 weeks. The coating continues to cross-link and harden during this period. Early rain won’t wash it off after 48 hours, but the finish won’t reach full durability until completely cured.

Bottom Line

At 4.8 stars from users who praise the natural cedar appearance and protection, UV+ delivers what contractors need: predictable coverage, no surface film to peel, and UV protection that actually works. The high solids content means fewer coats and better water repellency.

Works on cedar, redwood, pine, fir, spruce, and all types of pressure-treated lumber. Prep correctly with cleaner and brightener, then ensure wood is completely dry — usually 24-48 hours after cleaning. New pressure-treated lumber needs several weeks of weathering before application.

The biggest complaint? Price and the non-returnable hazmat classification. But for contractors who understand that labor costs more than materials, UV+ earns its premium through reliable performance and extended maintenance cycles.

FAQ

How does UV+ compare to standard deck stains? Unlike film-forming stains from Behr or Cabot, UV+ penetrates the wood rather than sitting on top, eliminating peeling risks. It’s also wax-free, allowing for better penetration and easier recoating without stripping.

What’s the real coverage to expect? Plan on 100-200 sq ft per gallon for rough lumber, 150-250 for smooth. The lower numbers are realistic for first coats on thirsty wood. Second coats go further.

Can this go over an existing stain? Compatible with previous coats of UV Plus after cleaning, but film-forming finishes must be stripped or sanded back to bare wood. No shortcuts here — incompatible coatings will cause adhesion failure.

What about VOC restrictions? Available in multiple formulations including EPA-compliant versions under 250 g/L, with 550 g/L versions available where permitted. All formulations are VOC compliant in all 50 states.

How often does this need recoating? Real-world recoat timing depends on exposure — horizontal surfaces and southern exposures need more frequent attention than protected vertical surfaces.