Accoya: The Sustainable Super Wood for Windows & Doors
October 16, 2026
Cypress offers Accoya, a high-performance, sustainable modified wood for upgraded materials options for exterior windows and doors. It comes with up to a 50-year above-ground warranty, and is the ideal wood species for harsh-weather conditional, especially in Costal areas.
Why Wood Remains the Architectural Choice for Windows & Doors
October 9, 2026
Cypress only make solid wood windows and doors-No Vinyl, Aluminum Clad or Composite materials. Learn more about the differences when selecting the right material for your project.

Cypress use Mahogany as our standard wood materials while most of window and door manufacturers use Pine; they are all wood but there are huge differences that you cannot overlook.

At Cypress Windows and Doors, we use mahogany for exterior window and door applications because it delivers the combination that demanding projects require: natural beauty, long-term stability, durability, and dependable performance.


When selecting wood for exterior windows and doors, appearance is only the beginning and the wood species matters as much as the design and craftsmanship. The material must also withstand moisture, temperature swings, sunlight, seasonal movement, and everyday use—while continuing to protect the home and look beautiful for years. Pine has long been used in interior millwork and painted applications, but mahogany is the better choice when a project requires lasting stability, refined appearance, and dependable exterior performance.


What’s the difference between Mahogany and Pine?

Mahogany is naturally denser, more dimensionally stable, and more resistant to moisture movement than pine. This is especially important in exterior windows and doors, where seasonal rain, humidity, direct sun, and temperature changes can cause lower-density woods to expand, contract, check, or distort over time.


Pine is a softwood with a more open grain structure. It absorbs moisture more readily and is more prone to dents, surface wear, resin bleed, and movement when exposed to changing weather. Even when painted or sealed, pine relies heavily on coating maintenance to remain protected. If the finish is damaged or neglected, moisture can penetrate the wood and accelerate deterioration.


Mahogany’s tight, straight grain helps it remain more stable through changing exterior conditions. That stability supports better long-term operation: doors are less likely to bind or warp, and windows are more likely to maintain consistent reveals, weather seals, and smooth function. It also provides a more reliable substrate for precision joinery, glazing, and exterior-grade finishes.


For entry doors, mahogany offers a substantial feel and superior resistance to everyday impact compared with softer pine. For window components, its density and stability help preserve crisp profiles, clean sightlines, and strong mortise-and-tenon connections over time.


Mahogany also delivers an architectural finish that pine cannot replicate. Its rich color, fine grain, and natural depth create a premium appearance whether it is stained, clear-finished, or painted. Rather than depending on paint to hide knots and uneven grain, mahogany brings visual quality to the finished product itself.


Pine can be appropriate for certain protected or budget-sensitive applications, but exterior windows and doors demand a material built for exposure. Cypress Windows and Doors uses mahogany when longevity, performance, and enduring beauty are the priority.


What Makes Mahogany a Strong Choice for Exterior Windows and Doors?

Exterior joinery is exposed to far more than interior trim or furniture. Window frames, sashes, door panels, jambs, and thresholds must remain stable through wet weather, heat, cold, and changing humidity. Mahogany is valued for its dense, durable character and its ability to hold its shape well in these conditions.


Its rich grain also gives every Cypress window and door a distinctive architectural finish—whether it is stained to showcase the wood or professionally painted for a more traditional or contemporary look.



1. Mahogany Offers Excellent Dimensional Stability

Wood naturally expands and contracts as moisture levels change. For exterior windows and doors, controlling that movement is essential.


Mahogany is known for strong dimensional stability, helping exterior components remain aligned and operable over time. This is particularly important for:

  • Operable casement, tilt-and-turn, and double-hung windows
  • Large entry doors and sidelights
  • Multi-point locking systems
  • Tight weather seals
  • Custom-shaped and oversized units

A stable wood helps maintain consistent reveals, smooth operation, and a refined finished appearance.


2. Built for Long-Term Exterior Performance

Mahogany has long been used in demanding exterior applications because of its natural durability. When properly selected, machined, sealed, and finished, it provides a dependable foundation for high-performance exterior joinery.


At Cypress, each window and door is custom manufactured with attention to the details that protect the wood: precise joinery, carefully prepared surfaces, quality glazing systems, weather seals, drainage considerations, and durable exterior finishes.

The result is not simply a beautiful wood product—it is a complete exterior system designed for longevity.


3. Mahogany Provides a Premium Architectural Finish

Mahogany’s grain and color bring warmth that cannot be duplicated by synthetic materials. Its rich reddish-brown tones can be highlighted with a clear or stained finish, while its consistent texture also accepts paint beautifully.


This makes mahogany ideal for a wide range of projects:

  • Traditional homes and historic restorations
  • Coastal and country residences
  • Contemporary homes seeking natural warmth
  • Custom entry systems
  • Arched, oversized, and specialty-shaped windows
  • High-end replacement projects

Every piece has its own natural character, giving the finished home a sense of permanence and craftsmanship.


4. Strong Joinery Starts With the Right Wood

Exterior doors and windows depend on precise joints, stable profiles, and secure hardware installation. Mahogany machines cleanly and supports the detailed craftsmanship required for custom exterior work.


For Cypress doors, that means a wood foundation suitable for accurate CNC milling, secure hardware preparation, carefully fitted panels, and highly sealed multi-point locking systems. For windows, it supports the detailed profiles and tight tolerances needed for energy-efficient glazing and reliable operation.


5. Mahogany Supports Better Exterior Door Performance

An exterior door is one of the hardest-working components in a home. It must stand up to weather exposure, daily operation, security hardware, and changing conditions without losing its alignment or appearance.


Mahogany is an excellent choice for premium entry doors because it offers the stability and durability needed for custom door construction. Combined with Cypress’s precise manufacturing, factory finishing, and secure hardware options, it creates an entry system designed to feel substantial, operate smoothly, and make a lasting first impression.


Why Material Selection Matters

The best exterior window or door is never defined by one feature alone. Long-term performance depends on the wood, the design, the joinery, the finish, the glazing, the weather sealing, and the quality of installation.


Mahogany gives Cypress a durable, stable, and visually exceptional material for exterior windows and doors. It allows us to create fully customized architectural products that protect the home while preserving the natural beauty of real wood.


Exterior Windows and Doors Built for the Long Term

Cypress Windows and Doors manufactures custom mahogany windows and doors in Reading, Pennsylvania. From traditional divided-light windows to contemporary picture windows, custom entry doors, and specialty shapes, every unit is made to suit the architecture of the home and the performance needs of the project.


Choose mahogany when your exterior windows and doors need more than a finish—they need lasting character, stability, and performance.



Last but not the least, Cypress offer multi-wood species lamination for frames and sashes. Thinking Mahogany is too dark for interior design? We could use White Oak or other lighter species for interior finish while keep the Mahogany for exterior to allow full design flexibility.