Therma-Tru Doors

America’s #1 Fiberglass Door Brand

For over 50 years, Therma-Tru has been the trusted leader in fiberglass door manufacturing, revolutionizing the industry with innovative technology and exceptional quality. As the inventor of the fiberglass entry door, Therma-Tru continues to set the standard for beauty, durability, and energy efficiency. At Utah Window Experts, we’re proud to offer Therma-Tru’s premium fiberglass doors for both exterior and interior applications, bringing you doors that combine stunning aesthetics with unmatched performance.

Why Choose Therma-Tru Doors?

Industry Leader – Therma-Tru invented the fiberglass entry door and remains the #1 brand in America.

Authentic Wood Appearance – Advanced texturing technology replicates real wood grain so accurately, most people can’t tell the difference.

Superior Durability – Fiberglass construction won’t rot, warp, crack, or split like wood doors.

Energy Efficiency – Exceptional insulation and weatherstripping reduce energy costs and improve comfort.

Low Maintenance – No painting, staining, or sealing required—fiberglass resists fading and damage.

Versatile Styles – Hundreds of design options from traditional to contemporary fit any architectural style.

Enhanced Security – Strong, impact-resistant construction provides excellent protection.

Lifetime Warranty – Industry-leading warranty coverage backs every Therma-Tru door.

Exterior Fiberglass Doors

Transform Your Home’s First Impression

Your front door is the focal point of your home’s exterior. Therma-Tru exterior doors make a stunning first impression while providing superior performance, security, and energy efficiency.

Key Features:

Realistic Wood Grain Textures – Choose from oak, mahogany, cherry, fir, and smooth finishes that look and feel like real wood.

Exceptional Insulation – Polyurethane foam core provides up to five times more insulation than wood doors.

Weather Resistance – Performs flawlessly in extreme heat, cold, rain, snow, and intense UV exposure.

Dent and Scratch Resistant – Durable fiberglass withstands impacts that would damage wood or steel doors.

Pre-Hung Systems – Complete door systems include frame, weatherstripping, and hardware for easy installation.

Extensive Glass Options – Decorative glass designs from classic to contemporary add beauty and natural light.

Multiple Configurations – Available as single doors, double doors, and doors with sidelites or transoms.

Factory Primed or Stained – Ready to paint in any color or available factory-stained to look like real wood.

Energy Star Rated – Meets or exceeds energy efficiency standards for significant utility savings.

Security Features – Solid construction, quality locksets, and reinforced frames provide excellent protection.

Style Options:

• Traditional raised panel designs
• Craftsman and mission styles
• Modern contemporary designs
• Rustic and farmhouse looks
• Classic colonial and Victorian styles

Best For: Front entryways, back doors, side entries, homes seeking curb appeal, energy-conscious homeowners, and anyone wanting the beauty of wood without the maintenance.

Interior Fiberglass Doors

Elevate Your Interior Design

Therma-Tru’s interior doors bring the same quality and beauty indoors, creating cohesive design throughout your home with doors that perform beautifully for decades.

Key Features:

Consistent Quality – Same premium fiberglass construction as exterior doors ensures long-lasting performance.

Beautiful Wood Grain – Authentic textures coordinate with your exterior doors or match existing woodwork.

Durability – Won’t warp, crack, or split even in high-humidity areas like bathrooms and laundries.

Low Maintenance – Resists damage from kids, pets, and daily wear far better than hollow-core or wood doors.

Sound Dampening – Solid construction reduces noise transfer between rooms.

Moisture Resistant – Perfect for bathrooms and laundries where wood doors would deteriorate.

Smooth Operation – Quality construction ensures doors hang properly and operate smoothly.

Paint or Stain Ready – Finish to match your interior décor perfectly.

Multiple Styles – Panel configurations, glass options, and designs to complement any interior.

Door Sizes Available – Standard and custom sizes for various openings.

Style Options:

• Traditional panel designs
• Contemporary flush styles
• French doors with glass
• Barn door conversions
• Pocket door applications

Best For: Master bedrooms, bathrooms, laundry rooms, closets, home offices, basement doors, and any interior opening where quality and durability matter.

The Fiberglass Advantage

Compared to Wood Doors:

No Rot or Decay – Won’t deteriorate from moisture, insects, or weathering

Zero Warping – Maintains perfect fit and operation through all weather conditions

Minimal Maintenance – No regular painting, staining, or sealing required

Better Insulation – Superior energy efficiency reduces heating and cooling costs

More Affordable – Premium appearance without the premium wood door price

Longer Lifespan – Decades of performance without the issues that plague wood doors

Compared to Steel Doors:

Authentic Wood Look – Realistic grain textures steel cannot replicate

No Denting – Fiberglass resists impacts that would dent steel

No Rust – Won’t corrode in humid or wet conditions

Better in Extreme Cold – Won’t conduct cold like metal doors

More Design Options – Greater variety of styles and configurations

Warmer Appearance – Creates an inviting entrance steel doors cannot match

Popular Therma-Tru Collections

Classic-Craft Canvas Collection – Most popular line featuring authentic wood grain textures in oak and mahogany styles.

Fiber-Classic Collection – Traditional designs with realistic wood appearance and exceptional durability.

Smooth-Star Collection – Contemporary smooth finish perfect for modern homes and bold paint colors.

Pulse Collection – Modern flush designs with clean lines for contemporary architecture.

Traditions Collection – Timeless raised panel designs for classic American homes.

Each collection offers numerous door styles, glass options, and configurations to create your perfect entrance.

Decorative Glass Options

Therma-Tru offers hundreds of decorative glass designs to enhance your doors:

Privacy Levels:

• Clear glass for maximum light
• Textured and obscure glass for privacy
• Frosted and etched designs
• Completely private patterns

Style Categories:

• Traditional and colonial patterns
• Craftsman and mission designs
• Contemporary and modern looks
• Decorative wrought iron grilles

Glass Types:

• Single pane decorative
• Insulated glass units
• Low-E energy-efficient glass
• Tempered safety glass

Energy Efficiency

Therma-Tru doors deliver exceptional energy performance:

Insulated Core – Polyurethane foam provides superior thermal resistance

Quality Weatherstripping – Advanced seals prevent air infiltration

Energy Star Certification – Many configurations meet Energy Star requirements

Low-E Glass Options – Reduce heat transfer while allowing natural light

Proper Installation – Professional installation ensures maximum efficiency

The result? Lower energy bills, reduced drafts, and improved comfort year-round.

Security and Safety

Therma-Tru doors provide excellent protection:

Impact Resistance – Strong fiberglass withstands forced entry attempts

Solid Construction – Dense polyurethane core creates substantial barrier

Quality Locksets – Compatible with high-security deadbolts and smart locks

Reinforced Frames – Strong frame systems resist tampering

Safety Glass – Tempered glass options for enhanced security

Fire Ratings – Fire-rated options available for specific applications

Therma-Tru and Utah’s Climate

Utah’s demanding climate with extreme temperatures, intense UV, and occasional severe weather requires doors that perform flawlessly. Therma-Tru excels:

Temperature Extremes – Won’t expand, contract, or warp through seasonal changes

UV Resistance – Fade-resistant materials maintain beauty despite intense sun

Moisture Protection – Superior weatherstripping keeps out rain, snow, and humidity

Wind Resistance – Strong construction withstands high winds without damage

Thermal Performance – Excellent insulation maintains comfort and reduces energy costs

Installation and Warranty

Professional Installation – Our experienced technicians ensure proper installation for optimal performance and warranty compliance.

Lifetime Limited Warranty – Therma-Tru backs their doors with one of the industry’s best warranties covering materials and performance.

Combined Protection – Our lifetime installation warranty plus Therma-Tru’s product warranty gives you complete peace of mind.

Customization Options

Create your perfect door with extensive customization:

• Multiple wood grain textures and smooth finishes
• Hundreds of decorative glass designs
• Various door sizes and configurations
• Single, double, and doors with sidelites
• Transom and full-lite options
• Custom paint colors or factory staining
• Numerous hardware styles and finishes
• Smart lock compatibility

Why Homeowners Choose Therma-Tru

Proven Performance – Millions of satisfied homeowners across America

Beautiful Aesthetics – The authentic wood look everyone wants

Long-Term Value – Decades of performance without replacement

Energy Savings – Lower utility bills year after year

Low Maintenance – More time enjoying your home, less time on upkeep

Enhanced Curb Appeal – Stunning doors that increase home value

Peace of Mind – Trusted brand backed by comprehensive warranty