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Replacement Windows 

Essential Windows

Simplified Design and Enhanced Performance Windows!

Discover the Essential Collection

Uniting Design, Quality, and Performance in One Seamless Package. Our Robust Fiberglass Exteriors and Interiors Are Not Only Stunning but Also Effortlessly Low-Maintenance. With Our Simplified Ordering Options, Your Project Becomes Effortless, Thanks to Clean Lines and Versatile Styles.

Mix with Ease, Match with Precision

Gunmetal by Jacob: Bold, Timeless, and Irresistible – Perfectly Suited for Your Style. Now Featured in Elevate and Essential Collections.
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Unparalleled Strength

Let the Numbers Tell the Story. Our Exclusive Fiberglass Material: Eight Times Stronger Than Vinyl, Three Times Stronger Than Vinyl/Wood Composites, and Resistant to Fading, Chalking, Peeling, and Cracking."
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Un-Matched Durability

Elevate and Essential Fiberglass Cross-Section Sample
Jacob Takes the Lead in Longevity with Fiberglass, Outlasting Vinyl Windows by 38%. Our Pultruded Fiberglass Stays Stable in Extreme Temperatures, Expanding at a Rate Nearly Identical to Glass, Ensuring Essential Windows' Resilience in Even the Harshest Conditions.
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Simplified Perfection

Essential simplifies the selection and ordering process with its slender profiles, sleek lines, and streamlined features and options.
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WINDOWS IN THE JACOB ESSENTIAL COLLECTION

Essential Awning

Essential Casement

Essential Double Hung

Essential Glider

Essential Picture

Essential Round Top

Essential Single Hung 

Essential Specialty Shapes

Time to Replace Your Windows?

Replace Your Worry with Ease!

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Explore Other Jacob Fiberglass Collections

Jacob Elevate Collection

Elevate products strike a remarkable balance between enduring style and unmatched performance. The inviting wood interiors offer factory finishes in clear coat, white paint, or designer black. Alternatively, select bare pine to match your interiors as desired. The resilient fiberglass exterior ensures strength, durability, and excellent thermal properties, excelling even in the harshest climates.
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We have YOU COVERED ST. LOUIS!

At Jacob, we're not just a company; we're a part of the St. Louis community. Our map isn’t just a representation; it’s a commitment, dotted with every service we’ve proudly completed across this great city. From the Gateway Arch to the furthest corners of the suburbs, our mark of quality extends far and wide.
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CORE VALUES

Home Improvement Experts Trusted Since 1977

Our core focus is to create lifelong customers by delivering the best home improvement experience, The Jacob Way!
WE CARE
TEAMWORK
COMMUNICATION
EXTREME OWNERSHIP
GET BETTER EVERY DAY
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About Jacob

Trusted home remodelers throughout the St. Louis area since 1977.  With roots in our community that stretch back decades, Jacob Windows, Baths & Sunrooms has maintained a reputation for excellence in all that we do
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