Fiberglass Entry Door Replacement in St. Louis

Name: Fiberglass Entry Door Installation
Brand: ProVia

STL Windows and Doors provides fiberglass entry door replacement in St. Louis for homeowners who want the look of real wood with better durability, lower maintenance, and strong energy efficiency. We install custom ProVia fiberglass front doors in a wide range of styles, finishes, glass options, and configurations to fit your home and budget.

Fiberglass entry doors are a smart choice for St. Louis homes because they resist warping, denting, rot, and weather-related wear while still delivering excellent curb appeal.

As a ProVia Platinum Dealer and Certified Installer, we provide expert installation backed by a 10-year workmanship warranty and proudly serve homeowners across St. Louis, St. Charles, Jefferson, Franklin, and Lincoln counties.

Browse fiberglass door styles below or request a free estimate to speak with a St. Louis entry door specialist.

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STL Windows and Door tech installing a red fiberglass door

Explore ProVia Fiberglass Entry Door Styles

Compare the ProVia fiberglass entry door collections we offer for St. Louis homeowners. Below, you can browse styles designed for authentic wood-look beauty, strong energy efficiency, long-lasting durability, and the level of customization that fits your home, goals, and budget.

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Signet vs. Ascent: ProVia’s Fiberglass Door Brands

ProVia builds two fiberglass entry door brands, and STL Windows and Doors installs both. Signet and Ascent share the same fiberglass construction, ENERGY STAR options, and 10-year workmanship warranty. Here is how they differ.

SIGNET® FIBERGLASS

Durable fiberglass that looks like wood

Widest range of door and sidelite styles
Smooth finish or Cherry, Mahogany, Oak, Knotty Alder, or Fir woodgrain
33 paint colors, 20 stains, 7 glazes
10-year workmanship warranty

See Signet Options

ASCENT® FIBERGLASS

Real white oak, low-maintenance fiberglass

Genuine white oak wood veneer, not a printed texture
ENERGY STAR certified
33 paint colors, 7 White Oak stains
10-year workmanship warranty

See Ascent Options

WHAT IS A FIBERGLASS ENTRY DOOR?

Fiberglass doors are typically exterior and widely used due to their durability, energy efficiency, and versatility. A fiberglass door usually consists of three components: a skin, a frame, and an insulation layer.

The skin is made from a plastic reinforced with glass fibers – the fiberglass that earns the door its name – the structure is usually either a robust composite material or wood, and a polyurethane foam core provides high-level insulation.

Fiberglass skin comes in many colors and textures and can be made to mimic natural materials like wood. ProVia, in particular, is known for the realistic wood-grain texture of its fiberglass door skins.

So, unlike wooden or steel doors, fiberglass entry doors require a more complex manufacturing process, which wouldn’t be possible without modern methods.

Skin

Wood-look fiberglass finish

Frame

Structural support at the edges

Insulation Core

Foam fill for energy efficiency

ProVia Door Technology

What makes ProVia fiberglass doors professional class in St. Louis

Components

Every detail of a ProVia fiberglass door, from the skin and frame to the insulation core, is engineered to work together so the finished door performs the way it looks.

Insulating Core

A high-performance polyurethane core, computer-filled for consistent coverage across every door.

Weatherstripping & Threshold

Perimeter weatherstripping, a dual-blade door sweep, and a Z-AC threshold system help block drafts and water.

ENERGY STAR® Certified

All Signet doors without glass, and most Signet and Ascent configurations with glass, are ENERGY STAR certified.

Built for St. Louis Weather

Designed to help keep warm air in during a St. Louis winter and out during a hot St. Louis summer.

Low Maintenance

A ProVia fiberglass door does not need repainting or resealing to stay looking new. Routine cleaning is typically all it takes to keep the finish looking right for years.

Learn More about ProVia Door Technology

WHY CONSIDER A FIBERGLASS ENTRY DOOR?

Across St. Louis, fiberglass entry doors are a popular choice for many homeowners thanks to their ability to mix traditional and modern benefits. If you want a more in-depth look at features, performance, and design options, check out our guide, Provia Fiberglass Doors – A Guide for St. Louis Homeowners.

Six reasons to consider fiberglass entry door from us:

Durability – the skin of plastic reinforced with glass fibers is robust and resistant to scratches, dents, warping, and rot. Adding a storm door provides extra durability and resilience to the elements.
Weather Resistance – fiberglass exterior, doors cope better with sun, rain, frost, and wind damage and won’t rot and warp like wood can.
Energy Efficiency – the thick polyurethane insulation core and double seals make fiberglass doors the most energy-efficient.
Security – fiberglass doors are very secure, with ProVia’s Signet system being the thickest available.
Low-maintenance – once a fiberglass entry door is installed, you won’t need to work to maintain its condition.
ProVia – cutting-edge modern residential door design technology with old-world-crafted beauty is a hallmark of Amish culture.

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WHY WE CHOSE PROVIA?

As a proud Platinum Authorized ProVia dealer, we chose ProVia windows and doors for our customers because they are the best – and American-made – products available. ProVia prioritizes quality and craftsmanship, providing consistent excellence across its entire product line.

WE’RE THE FIBERGLASS ENTRY DOOR COMPANY OF CHOICE

We’re a family-owned and operated window and door company proudly serving the St. Louis area with high-quality service and best-in-value products.

When comparing fiberglass door companies near you, have peace of mind knowing we offer a 10-Year Workmanship Warranty. We’re so confident in the quality of our replacement window and door installation work that we back it with a full 10-year warranty from installation.

Even a well-built entry door can underperform if it isn’t installed correctly. That’s why STL Windows & Doors uses our own in-house installation crews, not subcontractors, to make sure your complete entry system is properly fitted, sealed, insulated and finished, so the energy efficiency engineered into your ProVia door carries through to the finished installation, backed by our 10-year workmanship warranty.

We also offer a free in-home consultation and two great deals to save on your fiberglass entry door purchase.

TOP FIBERGLASS DOOR FAQ

Here are some frequently asked questions about fiberglass entry doors. If you have other questions, please get in touch with us!

Fiberglass doors are an excellent option for most homeowners. They are aesthetically appealing, offering great curb appeal, but are also durable, energy-efficient, and low-maintenance.

By most metrics, a fiberglass door will outperform a wooden one. Though wood is durable, fiberglass has a higher resistance to damage and weather, is better insulated, and requires less maintenance. Wood is a cheaper material than fiberglass, however.

It is hard to argue against fiberglass as the best option for an exterior door. Though they are pricier than some options, they more than merit the extra cost. With excellent longevity and outstanding energy efficiency, you are likely to recoup the additional expense in long-term savings in any case.

Signet is ProVia’s original fiberglass system, available with a smooth paint finish or a wood grain skin in several stain and glaze options. Ascent is the newer system, finished in a single authentic white oak wood veneer. Both use the same fiberglass door construction and carry the same 10-year workmanship warranty.

Cost depends on the door size, glass options, and finish chosen. STL Windows and Doors provides a free, no-obligation estimate for every fiberglass door replacement, and offers same-as-cash financing and a cash discount option.

Most single fiberglass entry door replacements are completed in a single day by our install team.

Yes. Both Signet and Ascent fiberglass doors can be ordered with sidelights, transoms, and glass options, and built to fit most existing openings.

We sell and install. Our own team handles the full fiberglass entry door replacement, from removal of the old door through final trim.