
MASONITE AT ASHBY LUMBER
At Ashby Lumber, we’re proud to offer Masonite® premium doors, trusted by homeowners and professionals across the Bay Area for their exceptional quality, design versatility, and long-lasting durability. Masonite® doors are crafted to do more—elevating homes with style, performance, and durability. Founded in 1925, Masonite has grown into a global leader in interior and exterior doors. Today, Masonite continues its legacy of innovation with superior fiberglass and wood door solutions that bring unmatched style, performance, and enduring value to every space.
Why Choose Masonite® at Ashby Lumber?
Proven Legacy
Trusted name in door innovation since 1925.
Innovative Engineering
Breakthroughs like the Performance Door System™ set industry standards.
Unmatched Durability
Fiberglass and composite option resist warping, rot, and denting.
Energy Efficiency
Advanced insulating cores and weatherproof seals enhance performance.














Exploring Masonite® Solutions

VistaGrande™ Collection
Modern design meets maximum natural light in the VistaGrande™ Collection—perfect for bright, contemporary living.
Expanded Glass Area: Flush-glazed construction allows up to 18% more visible glass.
Clean Aesthetic: Sleek, minimal sightlines for a modern look
Design Flexibility: Available in full-lite and 3/4-lite options with clear or decorative glass
Thermal Efficiency: Polyurethane core provides superior insulation
Weather Resistance: Durable fiberglass skin withstands the elements
ENERGY STAR® Compliant: Meets energy standards when properly installed
Limited Lifetime Warranty: Covers door slab, frame, sill, and weatherproofing
Installation Support: Includes detailed guides, specs, and care instruction

Heritage Series™ Collection
Timeless charm and modern resilience come together in the Heritage Series™—ideal for traditional home styles
Classic Detailing: Raised panel designs with authentic woodgrain textures
Solid Construction: Fiberglass exterior paired with a rigid insulated core
Finish Ready: Paintable and stainable surfaces to match any aesthetic
Long-Term Durability: Fiberglass resists moisture, dents, and decay.
Thermal Performance: Foam core enhances energy savings and comfort
System Compatibility: Optimized when used with the Masonite Performance Door System™
Limited Lifetime Warranty: Structural and performance-backed coverage
Easy Reference: Access to online technical resources and installation manuals

Masonite Performance Door System™
The Masonite Performance Door System™ is a complete door solution, engineered for superior sealing, strength, and energy efficiency.
4-Point Performance Seal™: Includes adaptive weatherstripping, enhanced corner pads, and self-adjusting sill
Rot-Resistant Frame: Composite material designed for longevity
Security Ready: Optional M-Protect™ multi-point locking system
Exceptional Air & Water Protection: Up to 64% better performance than competitive systems
Climate Ready: Performs in extreme temperatures and weather conditions
Energy Efficiency: Reduces thermal transfer for consistent indoor comfort
Limited Lifetime Warranty: Covers frame, slab, sill, and seals
10 Year Full Replacement: Includes labor and product replacement under qualifying conditions
Professional Resources: Comprehensive install and care documentation available online
Why Choose Ashby Lumber?
At Ashby Lumber, we don’t just supply materials—we provide solutions. Our expert team is here to guide you through the process, ensuring you select the perfect Masonite® products for your project. With decades of experience serving Bay area homeowners, contractors, and builders, we’ve earned a reputation for exceptional service and quality.

Transform Your Space with Masonite® Products From Ashby Lumber
Visit us at our Berkeley or Concord locations, or contact us to schedule a consultation with our experienced team. Let us help you bring your vision to life with Masonite®’s exceptional products.

As a leading provider of doors and windows in Berkeley, Concord, and the wider East Bay, Ashby Lumber is dedicated to helping you find the perfect solutions for your home or project. Our Berkeley and Concord showrooms feature a wide selection of doors, including durable exterior entry doors, stylish patio doors, and customizable options to suit your unique vision.
We’re proud to offer Masonite® products, known for their superior craftsmanship, innovative performance features, and design versatility—making them an ideal choice for Bay Area homeowners and contractors seeking high-quality doors. Whether you need replacement entry doors, new construction solutions, or a fully custom design, our team of experts at Ashby Lumber is here to guide you through every step, ensuring you find the perfect Masonite® products to enhance your space and fit your budget.