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4000 Series Vinyl Siding in Rockford, IL

Window World of Rockford’s 4000 series vinyl siding provides unmatched performance with both energy-efficient and reinforced options.

Choose Energy Plus Or Reinforced Styles
Insulate Your Home For Incredible Energy-Efficiency
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Choose From Two 4000 Series Options

Our 4000 Energy Plus vinyl siding features a thick 1 ¼” insulation making it our premium option for energy efficiency and durability. Our 4000 Reinforced vinyl siding offers a unique panel design and extreme rigidity, providing unmatched protection.


4000 Reinforced Vinyl Siding

Product Details
Color Options
Siding Styles

Window World 4000 Reinforced Vinyl Siding is engineered and manufactured to provide beauty and performance. Even the harshest weather conditions are no match for this incredible siding, thanks to its state-of-the-art locking system. More reasons to choose 4000 Reinforced Vinyl Siding:

  • Superior advanced locking system panel design
  • Rolled-over nail hem
  • Superior rigidity
  • Straight course lines & walls
  • Lifetime transferable warranty

Choose from a rich palette of 29 oak grain and 14 matte colors with matching accessories.

vinyl siding color options

Color options may vary based on package, dimensions and more.

Our siding is available in many styles, from energy-saving to performance-focused.

  • Prodigy® Energy Savings
  • Charter Oak® Energy Elite
  • Charter Oak® Vinyl Siding
  • Charter Oak XXL
  • Charter Oak XL
  • Board and Batten
  • Williamsport Colonial
  • Beaded
  • Cypress Creek Variegated
  • Center Lock Energy Choice
  • Center Lock
  • Odyssey Plus
  • Coventry By Alside
  • Seneca
  • Landscape
  • Conquest
4000 series siding product accreditations

Request Free Estimate Learn Our Process


4000 Energy Plus Vinyl Siding

Product Details
Color Options
Siding Styles

Window World 4000 Energy Plus Vinyl Siding provides unmatched protection and energy efficiency. More reasons to choose 4000 Energy Plus Vinyl Siding:

  • Premium 1-1/4” energy-efficient insulation thickness
  • Advanced rolled-over nail hem
  • Unique panel locking design
  • Superior durability
  • Straight and true course lines
  • Oak grain or matte finish
  • Lifetime transferable warranty

Choose from a rich palette of 29 colors with matching accessories.

vinyl siding color options

Color options may vary based on package, dimensions and more.

Our siding is available in many styles, from energy-saving to performance-focused.

  • Prodigy® Energy Savings
  • Charter Oak® Energy Elite
  • Charter Oak® Vinyl Siding
  • Charter Oak XXL
  • Charter Oak XL
  • Board and Batten
  • Williamsport Colonial
  • Beaded
  • Cypress Creek Variegated
  • Center Lock Energy Choice
  • Center Lock
  • Odyssey Plus
  • Coventry By Alside
  • Seneca
  • Landscape
  • Conquest
4000 series siding product accreditations

Request Free Estimate Learn Our Process

What is energy efficiency?

Energy-Efficient Siding

Your home’s siding impacts its energy performance. Insulated vinyl siding keeps your home more comfortable and can lower your energy bills. Discover the energy-efficient difference here.

Learn More

Your Questions, Answered.

Vinyl Siding FAQs

What makes the 4000 Reinforced vinyl siding more durable?

Window World of Rockford’s 4000 Reinforced Vinyl Siding is designed to provide curb appeal and impressive performance. With a combination of a rolled-over nail hem and specially designed locking system, it boasts exceptional wall attachment strength. In fact, the 4000 reinforced siding withstood category 5 hurricane-force winds in independent tests.

What makes the 4000 Energy Plus vinyl siding more energy efficient?

Window World of Rockford’s 4000 Energy Plus Siding features a contoured insulating underlayment designed to fill in the gaps left behind with traditional non-insulated siding. Its premium 1-1⁄4″ thickness is designed to provide an extra blanket of protection and impact resistance compared to traditional siding. The result is a siding system designed to withstand not only typical ‘around the house’ accidents, but also Mother Nature’s worst.

What design choices do I have?

Our 4000 series siding offers a host of design choices. For the reinforced vinyl siding, you can choose from 4-1/2″ clapboard or Dutch lap profiles, two finishes, and a wide range of beautiful colors. Our Energy Plus vinyl siding allows you to choose from 24 rich colors that allow you to create a home exterior that truly fits your style.

Does vinyl siding require maintenance?

No more sanding, staining or painting. With vinyl siding, you can save time and money. Just wash it occasionally to keep it looking like new.

Will my purchase be protected by a warranty?

Both 4000 series products are backed by a lifetime warranty, including fade and hail protection. Protecting not only you but the next owner of your home as well.

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What Your Neighbors Are Saying

A huge thank you to Window World and their installation crews. I had windows, doors, and siding installed recently and couldn’t be happier. Their crews were professional, timely, and accommodating. Thanks and I’ll definitely recommend you to friends and family.
Allen S.
We’ve had these guys out to replace the majority of the windows in our house and they just finished up with the siding. All of the products and installs look tremendous and they stand by their work. Both the window and siding crews have been professional and kind. Keep up the great work guys!
Jane D.
I just had my siding installed. IT LOOKS GREAT. The 2 guys who installed my siding went above and beyond. Don’t shop. Window World is your place. Thanks for a fantastic experience!
Renee H.

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