Messmer's UV+ Line: VOC-Compliant Penetrating Oil Finishes for Professional Contractors

Messmer’s UV+ delivers penetrating oil-based finishes with VOC-compliant options (550/250/100 g/L) specifically engineered for different regional regulations. The lineup targets contractors who need reliable wood protection without the peeling problems that plague film-forming stains.

VOC Compliance and Coverage Economics

The UV+ platform comes in three VOC levels to meet regional requirements. Standard MS-602 contains 550 g/L. OTC states get the 250 g/L version. California and SCAQMD areas require the 100 g/L variant (CMS-602-5).

Coverage rates directly impact project bidding:

Surface Type	Coverage Rate	5-Gallon Total
Rough Wood	100-150 sq ft/gallon	500-750 sq ft
Smooth Wood	150-250 sq ft/gallon	750-1,250 sq ft

The formula contains approximately 35-40% solids — higher than most penetrating stains. Those solids translate to better pore filling and water repellency without creating a surface film that’ll peel later.

Application Temperature Windows and Non-Film Technology

Surface temperature must stay between 40°F and 90°F during application. The manufacturer recommends 50°F+ for best results. You need a 24-48 hour rain-free window after application.

The non-film forming chemistry prevents the peeling problems that destroy deck stains in freeze-thaw climates. When properly applied, UV+ won’t peel because it doesn’t form a surface film. It’s a one-coat penetrating oil-based finish that soaks into the wood rather than sitting on top.

Over-application creates problems — any excess material remaining on the surface must be wiped off within 48 hours to prevent tackiness. Slower drying time in high humidity can lead to a tacky/sticky finish if not wiped off within 48 hours.

UV Protection and Application Methods

UV+ provides excellent resistance to UV degradation through high-quality trans-oxide pigments. The transparent iron oxide pigments extend color retention while maintaining natural wood appearance.

Application flexibility matters for contractors:

• Brush, roller, or airless sprayer application
• 3/8” nap roller or airless sprayer with .011” to .013” tip recommended
• Cleanup with mineral spirits, lacquer thinner, or MEK

Wood must have less than 12% moisture content before application. For gray or dirty wood, use Messmer’s Wood Cleaner and Wood Brightener first.

Wood Compatibility and Maintenance

UV+ works on the standard wood types contractors deal with daily. Compatible with cedar, redwood, pine, and fir. It handles pressure-treated lumber including CCA, ACQ, and copper-azole — though new treated wood should weather for 6-8 weeks before staining.

UV Plus targets domestic softwoods, while UV Plus for Hardwoods uses a thinner formula for dense woods like Ipe and Mahogany. UV Plus is semi-transparent, highlighting wood grain more than semi-solid or solid stains.

Best applied to bare wood or previously stained UV Plus surfaces — non-compatible film-forming stains must be stripped first. The ability to recoat without stripping saves significant labor on maintenance contracts.

Warranty Reality

Manufacturer’s limited warranty: Liability is limited to replacement of the product if found defective. No specific performance duration (years) is guaranteed due to variables in wood type, preparation, and exposure.

That’s standard for penetrating oil stains. No manufacturer guarantees years of protection when application quality, wood species, and exposure vary wildly between projects.

Reviews average 4.2 out of 5 stars, with users praising deep penetration that prevents peeling and Oxford Brown’s rich natural look that holds up in sun-exposed areas. Some find it easier to apply and maintain than competitors like Sikkens or Cabot.

FAQs

Q: What makes UV+ different from water-based deck stains?

A: UV Plus is oil-based, providing deeper penetration and easier maintenance (re-coating) compared to film-forming water-based products. Oil-based penetration means no peeling, just fading over time that’s easily refreshed without stripping.

Q: Can I apply UV+ over existing stain?

A: UV+ works best on bare wood or previously stained UV Plus surfaces. Non-compatible film-forming stains must be stripped first. If the old stain is peeling or forms a surface film, strip it completely before applying UV+.

Q: How much drying time do I really need?

A: 24 to 48 hours for rain/foot traffic resistance. Ensure no rain is forecasted for at least 24-48 hours after application. Full cure depends on humidity and temperature — high humidity significantly extends drying time.