The Federal style — sometimes called Adam style after the Scottish brothers who popularized it — shaped American homes from roughly 1780 to 1830, just after independence. Where Georgian trim is robust and Greek Revival is heavy, Federal moulding is delicate and refined: slim reeded pilasters, fine bead-and-reel detailing, oval and elliptical motifs, and crisp, narrow profiles that feel almost neoclassical-jewelry in scale.
Mason’s Mill carries 44 Federal & Adam profiles suited to early Republic townhouses, New England center-hall colonials, and Charleston single houses. They pair beautifully with our Georgian and Greek Revival profiles when layering periods on a single restoration.
Ayous (Triplochiton scleroxylon), also known as Obeche, African Whitewood, Samba, or Wawa, is a lightweight tropical hardwood native to the forests of West and Central Africa. In its natural, unmodified state, Ayous has a pale cream to light yellow heartwood with a straight to slightly interlocked grain and a medium-to-coarse texture with good natural luster. It's frequently grouped with — and sold alongside — African Mahogany because of its similar workability, dimensional characteristics, and the way it accepts stains and finishes to achieve rich, mahogany-like tones.
Ayous is prized for several reasons that make it well-suited to architectural and millwork applications: it's remarkably lightweight (roughly 24 lbs/ft³), which eases handling for vertical siding, ceiling, and overhead installations; it has low shrinkage and good dimensional behavior once properly dried; and its clear, knot-free character grades produce a smooth, uniform surface ideal for high-visibility finish work. In its natural state, Ayous is considered non-durable to moderately durable against decay, which is why exterior applications require a quality penetrating finish to protect the wood and extend its service life.
Each board is finished with Cutek Extreme Clear, a penetrating oil specifically formulated to stabilize exterior wood from within. Unlike surface coatings that sit on top of the board and eventually peel, crack, or flake, Cutek carries its oils deep into the wood fibers where they work continuously to reduce moisture movement — the primary cause of cupping, checking, warping, and end-splitting. This is especially important for a species like Ayous, whose natural durability benefits significantly from a stabilizing oil. Because Cutek penetrates rather than films, maintenance requires no sanding or stripping — just clean the surface and reapply when it looks dry. The clear formulation adds no pigment, allowing the Ayous's natural cream-to-honey tone to show through initially before gradually silvering to a soft gray patina if left unmaintained with a colortone.
Because Ayous can react with iron and galvanized fasteners (causing black staining), stainless steel fixings are required for installation. Pre-drilling is also recommended, as the wood can be brittle.
Ideal for architectural siding, feature walls, soffits, porch ceilings, interior paneling, sauna applications, and covered outdoor living areas where a lightweight, workable hardwood with a refined appearance is desired.
| Spec | Detail |
|---|---|
| Species | Ayous (Triplochiton scleroxylon) |
| Also Known As | Obeche, African Whitewood, Samba, Wawa; often sold alongside African Mahogany |
| Origin | West and Central Africa |
| Modification | None — natural, kiln-dried |
| Finish | Cutek Extreme Clear (penetrating oil) |
| Finish Type | Oil-based, non-film-forming |
| Color | Natural pale cream to light yellow; darkens slightly with age; accepts stains beautifully to achieve mahogany-like tones |
| Grade | Clear grade available; virtually knot-free |
| Grain / Texture | Straight to slightly interlocked grain; medium-to-coarse texture; good natural luster |
| Janka Hardness | ~440 lbf |
| Average Dried Weight | 23.8 lbs/ft³ (380 kg/m³) — lightweight |
| Specific Gravity | 0.32 (basic), 0.38 (12% MC) |
| Modulus of Rupture | 8,680 lbf/in² |
| Elastic Modulus | 934,000 lbf/in² |
| Shrinkage | Radial 3.1%, Tangential 5.3%, Volumetric 8.7% (T/R ratio 1.7) |
| Natural Durability | Non-durable to moderately durable — finish required for exterior use |
| Workability | Machines and finishes well; sands smoothly; accepts stains and oils evenly |
| Applications | Exterior siding (with finish), feature walls, soffits, porch ceilings, interior paneling, sauna walls/ceilings, millwork, trim |
| Fixings | Stainless steel required — Ayous reacts with iron and galvanized fasteners; pre-drilling recommended |
| Maintenance | Clean and re-oil with Cutek Extreme as needed — no sanding or stripping required |
| Sustainability | FSC-certified options available |
Contact Mason’s Mill to start your custom Moulding or Profile order.