Paintable Fiberglass Entry Doors

Therma-Tru Smooth-Star® Fiberglass Doors

If you look at your front door as the perfect place to add a pop of color to your home, then Therma-Tru Smooth-Star is the smooth, paintable fiberglass door collection for you. Smooth-Star fiberglass doors are more attractive and durable than steel, more energy efficient and easier to maintain than wood.

Smooth Star fiberglass doors offer versatility—

  • No-prime, paintable surfaces with high-definition panel embossment
  • Decorative glass designs or textured privacy glass
  • Better security from an enhanced lock block for
  • Durable, low-maintenance, weather-resistant
  • Energy-efficient, with Low-E glass options

As the company that invented fiberglass doors, Therma-Tru has the products that can bring your vision for your entryway to life. With a choice of 34 door styles, 19 pre-painted colors, 16 decorative glass families and multiple sidelite configurations, Smooth-Star gives you many ways to add character and make your door your own.

Therma-Tru doors are designed as complete systems, with all components engineered to work together seamlessly. Big L Windows and Doors proudly offers Therma-Tru Smooth-Star entry doors.


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Therma-Tru Smooth-Star fiberglass entry doors from Big L Windows and Doors are a high-impact yet budget-friendly upgrade that will immediately enhance your home’s curb appeal, energy efficiency and resale value.

Therma-Tru revolutionized the entry door industry with its fiberglass entryway systems, and continues to set a high bar. Smooth-Star fiberglass entry doors are strong, durable, and require very little maintenance—especially compared to wood. They stand up to harsh winter weather and the change of seasons, won’t rot like wood doors and won’t dent or rust like steel doors.

With Therma-Tru, you don’t have to spend a fortune to get a high-quality door. Smooth-Star entry doors have crisp, clean lines and high-definition contours. They come with a variety of privacy, texture and decorative glass design options. And, they’re energy efficient.

Therma-Tru Smooth-Star are engineered so all components of your entry door system work together seamlessly, forming a tight seal against drafts. Composite rails at the top and bottom keep out moisture. Inside the door, a polyurethane foam core insulates against cold and heat with an R-value up to four times higher than wood’s. For superior energy efficiency, privacy and textured glass options are triple-paned, and Low E glass is available. Most Smooth-Star door styles are Energy Star® qualified.


Smooth-Star doors come in a wide variety of styles to suit every taste and architectural style—from Craftsman to Modern to Traditional. Using Therma-Tru’s interactive tools, you can design the perfect door for your home—the style, color, textured or decorative glass designs, divided lites, sidelites and transom

For an instant pop of color and lasting beauty, you can order your Smooth-Star door pre-painted in one of eight vibrant PrismaGuard paint options, backed by a 10-year limited warranty. Use Therma-Tru’s Same-Day Stain kit to create the look of real wood. Or opt for a pre-primed finish that is ready for you to paint with your own color.

Customize your Smooth-Star door with privacy and textured glass or with decorative glass and caming. The beveled glass and caming are sandwiched between smooth glass panes to make cleaning a breeze. Break up larger expanses of glass with grids of simulated divided lites—also between panes of glass to make a smooth and easily wipeable surface. Add light control with convenient blinds-between-the-glass. There are options for every taste and price point.

Exterior home improvements such as a new entry door are generally considered one of the top five home updates that pay off, with the return at resale averaging over 90 percent. Contact Big L Windows and Doors today about ordering a new Therma-Tru Smooth-Star fiberglass door.