Woodtone Cortanium™ Trim, Siding, and Soffit

Cortanium™ delivers lifetime rot/termite protection with deep-core wood treatment technology that actually penetrates through the entire board — not just the surface. The Tru-Core® system penetrates to the core for deep preservation, and ends do not require field treatment/sealing. For Montana contractors tired of callbacks on rotted trim and carpenter ant damage, this changes the math on natural wood products.

The product installs with standard carpentry tools — no specialty diamond blades or fasteners required. Pre-primed/Finished on all 6 sides means only one field top-coat is required on-site. Cut ends don’t need field-applied sealant, and one-piece corners eliminate the need for miter joints and on-site caulking. That’s real time saved on every job.

Deep Treatment Technology Makes the Difference

The Tru-Core® system penetrates to the core for deep preservation. Unlike surface treatments that protect only the outer layer, this technology drives preservatives through the entire board thickness. The eco-friendly water-based treatment is Low-VOC certified — no harsh solvents off-gassing on the jobsite.

Protection extends to rot, decay, termites, carpenter ants and carpenter bees — the full spectrum of wood destroyers that plague Montana exteriors. A lifetime limited substrate warranty backs up these protection claims. The warranty specifically covers fungal rot, decay, termite infestation, and those carpenter ants that tunnel through untreated wood every spring.

Since ends don’t require field treatment/sealing, cut ends maintain the same protection level as factory edges. No bottles of end-cut solution to track down. No waiting for sealant to dry. Just cut and install.

Installation Efficiency That Contractors Notice

Standard carpentry tools handle everything — no specialty diamond blades or fasteners needed. The boards come pre-primed/finished on all 6 sides. One top coat in the field completes the finish system. Compare that to raw wood that needs primer plus two finish coats.

One-piece corners eliminate miter joints and on-site caulking. These pre-assembled corners speed installation and create cleaner lines than field-mitered joints that open up over Montana’s freeze-thaw cycles.

Installation Advantages	Time Saved
Pre-finished all 6 sides	Skip primer coat
No end-cut sealing required	Immediate installation
One-piece corners	No miters to cut or caulk
Standard tools only	No specialty blade costs

The resawn texture improves paint adhesion — critical when temperature swings from -20°F to 90°F stress every coating system. That texture gives paint something to grip, extending topcoat life in Montana’s UV-intense elevation.

Available Profiles Cover Every Application

The product line includes trim in 1”, 5/4”, and 2” thicknesses with resawn face texture. Siding comes in 1”x6” and 1”x8”. Window sills are available in 2”x3” and 2”x4”. Soffit boards come in 1”x4” and 1”x6”. Corner assemblies range from 1”x4” up to 2”x5”.

Product Type	Available Sizes
Trim (Resawn)	1”, 5/4”, 2”
Siding (Resawn)	1”x6”, 1”x8”
Sill (Resawn)	2”x3”, 2”x4”
Soffit (Resawn)	1”x4”, 1”x6”
Corners (Resawn)	1”x4”, 2”x4”, 5/4”x4”, 2”x5”

The system works with all major house wraps and drainage planes. Paint compatibility includes Sherwin-Williams, Benjamin Moore, Akzo Nobel, PPG, and Duckback topcoats. Standard exterior wood fasteners complete the installation.

The Bottom Line on Cortanium™

Harvested from sustainable Western North American SPF forests, these boards start with quality raw material. The Tru-Core® treatment transforms that wood into something that resists Montana’s toughest destroyers — moisture, insects, and temperature extremes.

Maintenance involves periodic inspection and re-coating of the field top-coat every 10-15 years depending on exposure. That’s standard for any painted wood product. The difference here is the substrate stays sound underneath, protected by deep-core treatment that doesn’t wash out or degrade.

For contractors who want natural wood aesthetics without the callback headaches, Cortanium™ delivers. The installation time savings alone — no end-sealing, pre-finished surfaces, one-piece corners — make it worth considering. Add lifetime protection against the rot and insects that destroy untreated wood in Montana’s climate, and the value proposition becomes clear.

Frequently Asked Questions

Q: How does the Tru-Core® treatment differ from standard pressure-treated lumber?

A: Tru-Core® penetrates to the core of the wood, while standard pressure treatments often achieve only surface or shallow penetration. The treatment uses a water-based, Low-VOC formula instead of the harsh chemical solvents found in some pressure treatments. Most importantly, cut ends don’t require field treatment or sealing because the preservation extends through the entire board thickness.

Q: What exactly does the lifetime warranty cover?

A: The lifetime limited substrate warranty covers fungal rot, decay, termite infestation, carpenter ants and carpenter bees. This addresses the primary failure modes for exterior wood in Montana. Coating warranties extend up to 25 years depending on the top-coat option selected. The substrate protection remains regardless of finish wear.

Q: Do I need special tools or fasteners for installation?

A: No. Standard carpentry tools work fine — no specialty diamond blades or fasteners required. Required tools include a standard circular saw, miter saw, standard pneumatic nailers, and drill. The product accepts standard exterior wood fasteners. This compatibility with existing tools saves money and installation time.

Q: What maintenance should customers expect?

A: Periodic inspection and re-coating of the field top-coat every 10-15 years, depending on exposure, maintains the aesthetic and finish warranty. The substrate protection continues regardless of topcoat condition, but maintaining the finish prevents moisture intrusion and UV degradation of the wood surface.

Q: How do the one-piece corners work?

A: One-piece corners eliminate the need for miter joints and on-site caulking. These pre-assembled corner boards install as single units, creating clean lines without the weak points of field-mitered joints. In Montana’s freeze-thaw climate, eliminating miter joints removes a common failure point where moisture infiltrates.