Plywood
Our plywood inventory supports builders and cabinetry makers with dependable stock, clean faces, and flexible core options. Standard panels, custom layups, and specialty sheet goods—sourced to meet the demands of construction and production environments.
Plywood & Sheet Goods
At Mason’s Mill & Lumber, plywood isn’t an afterthought — it’s a working material. We stock and source sheet goods that builders and cabinetry makers rely on every day, with the consistency, face quality, and core options required for real jobsite and shop conditions.
From domestic NAUF and ULEF panels to specialty outdoor and moisture-resistant options, our inventory is built to support production schedules, not slow them down.
Custom Layups& Specialty Sheet Goods
For projects that need more than an off-the-rack panel, we offer custom plywood solutions through our sourcing and manufacturing partners.
Custom capabilities include:
Custom veneer layups
Different faces on each side (species-to-species or veneer to melamine)
Pre-finished custom panels
Cut-to-size options (within project scope)
- UV finishing
These solutions are typically handled job-by-job, allowing builders and cabinet shops to dial in exactly what the project requires — without over-ordering or unnecessary compromises.
If your project needs something specific, our team can help spec the panel before it ever shows up onsite.
Browse our Plywood Selection
Thermory Knotty Pine — Cutek Extreme Clear Finish
Thermory Knotty Pine is Scandinavian pine transformed through a chemical-free thermal modification process that uses only heat and steam. Sustained temperatures above 190°C fundamentally alter the wood's cell structure, driving off moisture and breaking down the organic compounds that fungi and insects feed on. The result is a dimensionally stable, rot-resistant board with a warm, deepened caramel tone and the character-rich knots that give knotty pine its signature appeal (Thermory).
To preserve that warm color and extend the wood's outdoor service life, each board is finished with Cutek Extreme Clear, a penetrating oil that soaks deep into the wood fibers rather than forming a surface film. Because Cutek works from the inside out, it stabilizes the board against moisture movement — the leading cause of cupping, splitting, and checking — without peeling or flaking like traditional coatings. The clear formulation contains no pigment, so the wood will naturally silver over time while remaining fully protected. Maintenance is straightforward: no sanding or stripping required, just a clean and re-oil when the surface begins to dry out (Cutek).
Ideal for exterior siding, soffits, ceilings, porch cladding, and covered outdoor living spaces where you want the authentic look of natural wood with modern durability.
Specifications
| Spec | Detail |
|---|---|
| Species | Scandinavian Pine (thermally modified) |
| Product Line | Thermory Knotty Pine |
| Modification | Thermo-D (chemical-free, heat + steam) |
| Grade | Knotty / character grade |
| Finish | Cutek Extreme Clear (penetrating oil) |
| Finish Type | Oil-based, non-film-forming |
| Color | Warm caramel brown (weathers to silver-gray if left untreated over time) |
| Rot Resistance | Class 1 (highest durability class per EN 350) |
| Dimensional Stability | Significantly improved vs. untreated pine |
| Warranty | 25-year limited warranty against rot and decay (Thermory) |
| Applications | Exterior siding, soffits, porch ceilings, covered decks, cladding, outdoor living spaces |
| Maintenance | Clean and re-oil with Cutek Extreme as needed — no sanding or stripping required |
| Sustainability | FSC-certified options available; chemical-free modification process |
| Origin | Sourced and modified in Estonia / Northern Europe |
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Extensive Inventory, Ready to Work
We offer a deep selection of domestic and imported plywood, available in a wide range of species, cores, and thicknesses — typically from 1/4″ through 1″, with larger and specialty thicknesses available by request.
Available options include:
NAUF panels
ULEF certified plywood
MDF core and combination core stain-grade panels
MDF sheets from 1/4″ to 1-1/8″
MDO for exterior and formwork applications
Every product we stock is selected with flatness, consistency, and finish quality in mind — the things that matter once the sheet hits the saw or goes on the wall.
Frequently Asked Questions
We carry a wide range of domestic and imported plywood, including NAUF panels, ULEF-certified plywood, MDF core, combination core, MDO, and specialty sheet goods. Thicknesses typically range from 1/4″ to 1″, with additional options available by request.
Yes. We can source custom plywood layups on a project-by-project basis. Options include custom veneers, different faces on each side, melamine on one face with wood veneer on the other, and pre-finished panels depending on project requirements.
Cut-to-size services are available within reason and are typically handled as part of a larger project or custom order. Our team can help determine what makes sense based on your application and timeline.
For exterior and moisture-exposed applications, we stock MDO panels, Tricoya™ waterproof MDF with a 50-year rot warranty, and Modern Mill ACRE™ sheet goods designed for durability and long-term performance outdoors.
Our plywood and sheet goods are primarily used by builders, cabinetry shops, and millwork professionals working in residential and commercial construction. We focus on materials that perform well in jobsite and shop environments where consistency and availability matter.
Start your next Plywood Project with Mason's Mill today!
Let’s Spec It Right Whether you need stocked panels, a custom layup,
or help selecting the right sheet good for the job, our team is here to help.