Entry Doors — Therma-Tru, Masonite & Simpson Supplier in California
Entry Doors That Make the Right First Impression — Every Time
Western Window & Door supplies premium entry doors from Therma-Tru, Masonite, and Simpson — three of the most trusted names in the industry — for homeowners, contractors, and builders throughout Northern California.
Your Front Door Is Doing More Work Than You Think
Every person who visits your home forms an opinion before they step inside. Your front door is the handshake — it communicates security, craftsmanship, and style all at once. And beyond the visual impression, it's one of the hardest-working components of your entire home. It's blocking weather, resisting forced entry, managing energy loss, and doing it all day, every day, for decades.
Choosing the wrong door means compromising on at least one of those things. Choosing the right one means you never have to think about it again.
At Western Window & Door, we supply entry doors from three manufacturers who have each earned their reputation the hard way — through performance, longevity, and product depth that gives you a genuine answer for every project, every budget, and every architectural style.
Three Brands. One Supplier. Every Entry Door Scenario Covered.
Therma-Tru — Performance-First Fiberglass & Steel Entry Doors
Therma-Tru is the leading entry door brand most preferred by building professionals, and it's not hard to see why. Therma-Tru fiberglass doors have up to four times the insulating R-Value of wood and feature a polyurethane foam core for superior thermal performance. They look like wood. They perform like nothing wood can match.
Why Therma-Tru Wins on Performance:
Therma-Tru door systems are tested for 300 lbs. of forced-entry resistance (AAMA 1304), and their fiberglass doors are up to 30% more resistant to kick-ins than standard steel doors. Steel doors can dent and bow under impact. Wood doors swell, warp, and weaken over time. Therma-Tru fiberglass absorbs and deflects force without failing.
Their rot-free composite door frame is 50% stronger at resisting forced entry than wood, features full-length jambs with no finger joints for more reliable performance, and uses a continuous composite material that will not deteriorate over time like wood.
The Collections:
Classic Craft® : Therma-Tru's premium entry line, boasting impressive craftsmanship and features including engineered moisture protection with composite top and bottom rails, solid hardwood edges, and construction identical to wood doors with narrow stiles and rails. Available in Fir, Mahogany, Rustic, Oak, and Canvas collections.
Smooth-Star® : The most versatile line in the Therma-Tru family. Smooth-Star Shaker-style entry doors are available in flush-glazed half-lite and full-lite options including impact-rated versions, with door divider bar and simulated divided lite styles that blend on-trend contours with purposeful Shaker design. Perfect for contemporary and transitional homes.
Fiber-Classic® : A reliable mid-range fiberglass option available in Mahogany and Oak collections — beautiful aesthetics with proven Therma-Tru performance at a more accessible price point.
Glass Options : All decorative glass is handcrafted with all-glass bevels for premium quality, and all decorative as well as privacy and textured glass panels are triple-paned — enclosed between two tempered pieces of glass — offering superior quality and thermal performance.
Security Upgrade : Therma-Tru Multi-Point Locking Systems (MPLS) enhance security by engaging the door and frame at three critical points — a complete upgrade from a traditional single deadbolt.
Warranty : Therma-Tru fiberglass door systems are backed with a lifetime limited warranty — the industry's most comprehensive warranty of its kind.
Masonite — Fiberglass, Steel & Wood Entry Doors for Every Style
Masonite has been building doors that homeowners trust for decades, and their breadth of options is genuinely hard to match. Whether you're after a bold modern statement, a craftsman classic, or a clean transitional style, Masonite has a door that fits — in fiberglass, steel, or wood.
Why Masonite:
Masonite fiberglass exterior doors are made with premium components designed to work together — featuring a rot-resistant frame and 4-Point Performance Seal that keeps air and water out for lasting comfort and energy efficiency.
Masonite's flush-glazed VistaGrande doors allow up to 18% more light than doors with traditional glass frames — making them the go-to choice for homeowners who want to maximize natural light without sacrificing energy performance.
Material Options:
Masonite Fiberglass: Masonite's fiberglass doors are prized for their exceptional durability and resistance to harsh weather conditions, offering design versatility with woodgrain textures or smooth finishes. The top choice for buyers who want wood beauty with zero wood maintenance
Masonite Steel : Steel doors from Masonite are synonymous with security and affordability — ideal for modern homes, providing a sleek look with the added benefit of being low maintenance and highly resistant to forced entry.
Masonite Wood : For buyers who want the real thing. Masonite's natural wood doors combine authentic beauty with durability, customizable with a wide variety of species, panels, glass, colors, and decorative accents.
The Collections:
VistaGrande® : The flush-glazed collection that redefines what an entry door can look like. Maximum glass, maximum light, clean modern lines — available in fiberglass and steel with optional internal mini blinds for privacy.
Heritage Series™: Craftsman-style character with solid construction. Rich panel detailing and multiple glass configurations make this one of the most popular lines for traditional and transitional homes.
Masonite Modern : Strong lines, geometric shapes, and dynamic proportions that characterize the bold simplicity of modern style — for homeowners who want their front door to make a statement.
Warranty : Many Masonite collections including the Barrington, Heritage, and Belleville series carry a lifetime structural warranty, with a 15-year warranty on steel door systems.
Simpson — Premium Custom Wood Entry Doors Since 1912
When fiberglass and steel simply won't do — when the project demands real wood, genuine grain, and true craftsmanship — Simpson is the answer. For over a century, Simpson has been shaping the standard for what a wood door can be, with a legacy built on precision, passion, and a deep respect for natural materials.
Why Simpson:
Recent industry research reveals that 68% of homeowners prioritize aesthetics when selecting their exterior door, and 46% value customization options — Simpson's exterior wood doors deliver on both.
With a legacy of craftsmanship, Simpson has worked with over 115 different wood species, offering an unparalleled variety for exterior door projects — matching any vision, whether you're seeking a specific look, finish, or want to coordinate interior and exterior doors for a cohesive design throughout your home.
What Makes Simpson Different:
Simpson's stile and rail doors include hundreds of standard options from contemporary to decorative entry doors, available in a variety of wood species, sizes, and glass options — whether it's a standard design or a one-of-a-kind custom door.
Simpson offers 50+ glass configurations for any design style or preference, and their doors can be machined to accommodate all modern door hardware including smart locks, electronic deadbolts, keyless entry systems, and traditional hardware.
Popular Wood Species: Douglas Fir, Knotty Alder, Oak, Mahogany, Hickory, Cherry, and many more — each with its own grain character, finish response, and visual weight.
Special Collections:
Performance Series® : A selection of heavy-duty upgrades for exterior doors that need additional protection from demanding elements. For California homes exposed to coastal air, extreme heat, or high UV environments.
Nantucket Collection: An all-wood door engineered for the toughest exposures, covered by a 10-year warranty and designed for installations where weather protection is a primary concern.
UltraBlock® Technology : Simpson's proprietary moisture protection system, available across most exterior door lines, significantly extending the life and finish integrity of the door.
Pivot Door System : Simpson's Pivot Door System makes a statement with four unique options, each delivering trusted performance, security, and no-hassle installation — for homeowners who want a grand, architectural entry that goes well beyond the standard hinged door.
Warranty : Exterior doors with UltraBlock® and WaterBarrier are covered by a 5-year warranty. The Nantucket Collection carries a 10-year warranty.
Choosing Your Entry Door — Brand at a Glance
| Therma-Tru | Masonite | Simpson | |
|---|---|---|---|
| Primary Material | Fiberglass & Steel | Fiberglass, Steel & Wood | Solid Wood |
| Best For | Performance & durability | Style range & value | Premium custom aesthetics |
| Energy Efficiency | ★★★★★ | ★★★★ | ★★★ |
| Low Maintenance | ★★★★★ | ★★★★★ | ★★★ |
| Customization | ★★★★ | ★★★★ | ★★★★★ |
| Wood Authenticity | Simulated | Simulated or Real | 100% Real Wood |
| Security Rating | Highest | High | High |
| Warranty | Lifetime (fiberglass) | Lifetime (select lines) | 5–10 years |
| Price Range | Mid to Premium | Entry to Premium | Premium to Custom |
How to Choose the Right Entry Door for Your Home
A well-placed skylight does more than most people The right door depends on four things — and getting clarity on all four makes the decision straightforward.. Here's what our California customers consistently report after installation:
Material
Fiberglass is the modern workhorse — low maintenance, high performance, excellent insulation, and it genuinely mimics the look of wood at a fraction of the upkeep. Steel is the security and value play — affordable, durable, and great for modern aesthetics. Real wood is for buyers who want authenticity, character, and a door that tells a story — and are willing to maintain it properly over time.
Style & Architecture
Your door should feel like it belongs to your house. A Craftsman home calls for different proportions and panel detail than a Modern farmhouse or a Contemporary glass-forward facade. We'll help you match the door to the architecture so the result looks intentional, not afterthought.
Glass
Glass transforms an entry door from functional to architectural. The right amount of glass — and the right privacy level — makes a hallway brighter, a foyer more welcoming, and a front elevation more distinctive. From full-lite flush-glazed panels to small decorative accents, the options across all three of our brands cover every combination of light, privacy, and style.
Performance Requirements
If you're in a wildfire zone, a coastal area, or a high-traffic rental property, your door needs to be spec'd for those conditions — not just for aesthetics. Therma-Tru's impact-rated options, Masonite's 4-Point Performance Seal systems, and Simpson's Performance Series® and Nantucket Collection all address specific performance demands. Tell us your conditions and we'll point you to the right product.
Built for Every Kind of Project
Homeowners & Remodelers
Replacing a single front door or updating every exterior entry in the house — we'll help you select the right combination of style, material, and performance for your home and budget.
Builders & General Contractors
Spec your entry doors accurately from day one. We carry all three brands, understand lead times, and can help you match the right product to each unit in a development without overbuilding or underspecifying.
Architects & Interior Designers
Simpson's 500+ exterior door designs and 115+ wood species give you the raw material to execute virtually any design intent. We're the supplier who can actually source what you're designing.
Property Managers & Investors
Therma-Tru and Masonite's fiberglass and steel lines offer the durability and low maintenance profile that rental and investment properties demand — no warping, no painting every few years, no callbacks.
Why Source Your Entry Doors Through Western Window & Door?
We carry three complementary brands specifically because no single brand covers every scenario. Our job is to match your project to the right product — not to push one manufacturer's line over another.
Authorized Supplier Access — Genuine Therma-Tru, Masonite, and Simpson products with full manufacturer warranty coverage.
Unbiased Brand Guidance — We'll give you an honest recommendation based on your project, not on which brand has the best margin for us.
Performance Specification Support — Wildfire zones, coastal exposures, high-security requirements — we know how to spec for California conditions.
Coordinate Your Full Order — with windows and moulding through one supplier, simplifying your project logistics significantly.
No Installation Markup — Product pricing only. Your installer handles the rest.
Ready to Find the Right Door for Your Home?
Tell us your project, your style direction, and your performance requirements — and we'll put together a recommendation and accurate pricing across all three brands. No pressure, no guesswork.
Common Entry Door Questions
Fiberglass vs. steel vs. wood — which is best?
There's no single answer — it depends on your priorities. Fiberglass doors offer up to four times the insulating R-Value of wood and require virtually no maintenance. Steel is the most cost-effective and secure option. Real wood delivers unmatched character and authenticity but requires more upkeep over time. We'll help you weigh those trade-offs for your specific situation.
Are fiberglass doors really as secure as steel?
Therma-Tru fiberglass doors are up to 30% more resistant to kick-ins than standard steel doors — standard steel doors can dent and bow under impact, which leads more quickly to product failure, while Therma-Tru fiberglass absorbs and deflects force.
Can I get a custom size?
Yes — all three brands offer custom sizing. Simpson in particular can accommodate virtually any dimension and is the go-to choice for non-standard openings or architecturally specific projects.
What about glass and privacy?
Every brand we carry offers a wide range of glass options — from clear full-lite panels to frosted, textured, decorative, and Low-E insulating options. All Therma-Tru decorative glass panels are triple-paned for superior thermal performance, and Masonite's VistaGrande line lets in significantly more light than traditional framed glass designs.
Do you carry doors for wildfire-prone areas?
Yes. Therma-Tru's impact-rated options and Simpson's Nantucket Collection are both appropriate for high-exposure applications. Let us know your location and we'll recommend the right spec.
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