Stair Parts
Custom stair parts made to your exact specifications,
from classic designs to modern aesthetics.
Stair Parts & Custom Stair Components
Mason’s Mill & Lumber supplies custom stair parts and components for residential and commercial projects where detail, consistency, and fit matter.
From treads and risers to handrails, balusters, and newel posts, our stair parts are milled to specification using carefully selected hardwoods and proven production methods.
Stair Parts Custom Made in Mill 3
Balusters and Balustrade
Balusters are the vertical posts supporting the railing, working with the handrail to form the balustrade system. While three balusters per foot is standard, tighter spacing can add an elegant touch to your design.
Handrails
Handrails provide support and safety, resting horizontally or at an angle above the balusters. Smooth transitions in handrails are achieved using fittings like volutes, turnouts, or goosenecks, blending practicality with style.
Newel Posts
Newel posts are the larger vertical supports anchoring the balustrade system. Placed at key points—like the base, top, and turns of a staircase—they provide both structural support and a bold design element.
Treads and Risers
Treads are the horizontal steps you walk on, while risers are the vertical supports beneath them. For a sleek, modern look, risers can be omitted, creating an open tread design.
Nosing
The nosing is the edge of the tread or landing tread that extends beyond the riser, offering more walking surface and a polished appearance.
Fittings and Moldings
Fittings such as upeasings and goosenecks create smooth transitions when the handrail changes height or direction. Decorative moldings, like cove molding, enhance the design by covering joints between treads and risers.
Browse our Stair Treads
Thermory Clear Pine — Cutek Extreme Clear Finish
Thermory Clear Pine is a premium, knot-free grade of Scandinavian pine that undergoes the same chemical-free thermal modification process as Thermory's character-grade boards — heat and steam sustained above 190°C — but is milled from carefully selected clear stock. The result is a smooth, uniform board with a rich, even caramel-brown tone and virtually no knots or visual interruptions, making it the go-to choice for projects where a refined, architectural appearance is as important as long-term performance. Thermal modification permanently reduces the wood's ability to absorb moisture and eliminates the food source that fungi and insects rely on, delivering Class 1 rot resistance without any chemical preservatives (Thermory).
Each board is finished with Cutek Extreme Clear, a penetrating oil engineered specifically for dimensionally stabilizing exterior wood. Unlike surface coatings that sit on top of the board and eventually peel, crack, or flake, Cutek carries its stabilizing oils deep into the wood fibers where they work continuously to reduce moisture movement — the primary driver of cupping, warping, and end-checking. The clear formulation adds no pigment, allowing the warm caramel tone of the thermally modified pine to show through initially, then transition gracefully to a silver-gray patina over time while the board remains fully protected beneath the surface. Reapplication requires no sanding or stripping — simply clean the surface and re-oil when it begins to look dry (Cutek).
Best suited for high-visibility exterior applications where a clean, contemporary wood aesthetic is desired: modern siding, feature walls, soffits, porch ceilings, and covered outdoor living areas.
Specifications
| Spec | Detail |
|---|---|
| Species | Scandinavian Pine (thermally modified) |
| Product Line | Thermory Clear Pine |
| Modification | Thermo-D (chemical-free, heat + steam) |
| Grade | Clear / architectural grade (knot-free) |
| Finish | Cutek Extreme Clear (penetrating oil) |
| Finish Type | Oil-based, non-film-forming |
| Color | Warm caramel brown (weathers to silver-gray if not re-oiled with colortone) |
| 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 | Modern exterior siding, feature walls, soffits, porch ceilings, covered decks, architectural cladding |
| 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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Why Choose Mason’s Mill & Lumber Co.?
Expert Craftsmanship
Our M3 Custom Millwork shop combines skilled artisanship with advanced machinery for superior quality.
Top-Quality Materials
We source the finest woods and materials to ensure lasting durability and beauty.
Endless Customization
Whether it’s traditional hardwood or a unique design, your staircase will be as functional as it is striking.
Personalized Service
We work with you from concept to completion, ensuring every detail meets your vision.
Frequently Asked Questions
We supply a full range of stair components, including treads, risers, handrails, balusters, newel posts, nosing, fittings, and related decorative profiles. Components can be ordered individually or as part of a complete stair package.
Yes. Stair parts can be milled to project-specific dimensions, profiles, and species. Custom sizing and detailing allow components to align with architectural drawings, existing conditions, or design intent.
We offer a wide selection of domestic and specialty hardwoods. Species availability may vary based on project requirements and lead times. Our team can help identify the best option based on appearance, durability, and performance needs.
In many cases, yes. We regularly work with projects that require stair parts to coordinate with flooring, trim, or other millwork elements. Providing samples or specifications helps ensure consistency.
Stair parts are typically supplied unfinished unless otherwise specified. Finishing options may be available depending on project scope and requirements. Our team can discuss what makes the most sense for your application.
Yes. We work with builders, designers, and stair professionals to review drawings, measurements, and requirements. While we don’t design or install staircases, we help ensure materials and profiles align with the intended use.
Yes. We support residential, multi-family, and commercial applications where quality, consistency, and fit are important.
Start your next Project with Mason's Mill today!
Custom stair parts and components.