Interstate Window Products

Compositwood Windows

CompositWood blends the elegant appearance of a true wood window with the maintenance freedom of vinyl, the strength of metal, cutting edge energy saving and operational features into a beautiful and durable window system. Frames and sashes are made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. The result is an extremely durable, weatherable and fade resistant product that is far superior to other window framing materials.

CompositWood provides the warmth of a finely milled wood window without the problems associated with wood.

Exclusive Supercap™ Surface Technology

SuperCap provides a permanent pre-finished surface that performs in the harshest of weather conditions. Proven with years of extreme outdoor sun exposure testing in Florida and Arizona, SuperCap meets or exceeds AAMA 613 color standards. A lifetime of virtually no-maintenance benefits for homeowners, this tough, capped surface protects against yellowing from ultraviolet light exposure, erosion, chalking and cracking to keep windows and doors looking good over time. The cap brings protective ingredients to the profile surface, where they provide superior weathering performance. Also, the SuperCap surface layer is integral and fusion-bonded into the profile.

Advanced Technology Provides Superior Energy-Efficiency, Comfort and Durability

CompositWood Windows offer superior performance because it combines the latest in composite material technology with the best performing glass options. The CompositWood material combines the beauty of wood with superior, rot-proof durability and no-maintenance attributes of vinyl. It’s a superior insulator compared to fiberglass, wood or aluminum. Combine this advanced material with the highest performing glazing, and you get greater energy savings, comfort, and durability over the long run.

  • Thermally superior composite material reduces energy-transfer better than wood, vinyl, fiberglass, and aluminum
  • More energy-efficiency means greater savings on monthly heating & cooling costs.
  • Available with highest-performance glass system for maximum savings
  • Surpasses ENERGY STAR® energy performance criteria
  • CompositWood windows have multiple weatherstrip paths with interlocking sash and jambs designed to reduce air infiltration
  • More comfort – without air drafts you stay warmer in Winter, cooler in Summer
  • Classic wood window design enhances the value and beauty of your home – inside and out
  • Premium performance hardware ensures easy cleaning and operation
Color Choices — Inside and Out
Inside, select solid SuperCap® white or CompositWood’s real Eastern pine veneer that can be stained or painted to suit your needs. Outside, choose from SuperCap white (white interior); 14 in-stock factory painted colors; over 30 special order colors; and virtually unlimited custom matched colors (15-year paint warranty).
supercap-colors
Custom Paint Finishes (14 in Stock Exterior Colors)
colors
Incredible Thermal Values
Dual Energy Saver
  • Double Pane with Duralite™ Spacer and Climaguard Low E glass and Argon gas in the chamber
  • U-factor:
    • .24 – Double Hung
    • .23 – Casement, Awning
    • .21 – Double Hung w/additional Low E on interior surface
    • .20 – Double Hung w/additional Low E on interior surface & special certified gas fill* (IS-20 glass)
    • .20 – Casement, Awning w/additional Low E on interior surface *
Triple Fuel Saver
  • Triple Pane with Duralite™ Spacer and 1” insulated assembly with 2 panes of Climaguard Low E glass and Argon gas in both chambers
  • U-factor:
    • .19 – Double Hung *
    • .16 – Casement, Awning *
Triple Fuel Saver Plus
  • Triple Pane with Duralite™ Spacer and 1” insulated assembly with 2 panes of Climaguard Low E glass, Krypton gas and Argon gas.
  • U-factor:
    • .17 – Double Hung *
    • .15 – Casement/Awning *
Triple Fuel Saver Max
  • Triple Pane with Duralite™ Spacer and 1” insulated assembly with 2 panes of Climaguard Low E glass and Krypton gas
  • U-factor:
    • .16 – Double Hung *
    • .14 – Casement/Awning *

* Products that are recognized as the Most Efficient of ENERGY STAR in 2017 meet rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency. CompositWood has been awarded the ENERGY STAR Most Efficient mark for 2017.

Interstate Window Double Hung Windows by Window Works of Chattanooga

Double Hung Windows

Model 9800 Double Hung

Double Hung Window Configuration - Window Works of Chattanooga
Exclusive Light Lift™ SP (Superior Performance) Sash Balance System on all CompositWood Double Hung Windows
Constant Force, Constant Clean, T-Lock Balance

CompositWood double-hung windows are built exclusively with the Light-Lift SP (Superior Performance) Balance System. Light-Lift SP insures consistent, easy-to-manage tension whether opening or closing. It has built in dust plugs which help keep coils free of dust and debris and also act as weatherstripping, for additional energy efficiency.

EnviroSealed Windows.

CompositWood, the next generation of windows, is a revolutionary material blended with timeless design that surpasses the ambitions of even the most well known window manufacturers.

What is CompositWood?

CompositWood is made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. CompositWood is simply the best window you can buy. It provides the warmth of a finely milled wood window without the problems associated with wood.

Why CompositWood?

Nothing defines a home like the elegance and warmth of wood windows, but the maintenance problems and expenses associated with wood are simply overwhelming. 
Metal and vinyl clad wood windows were only partial solutions. In the industry-wide pursuit of window excellence, CompositWood is the answer.

  • Classic wood window designed frame and sash for added curb appeal
  • Solid core frame and sash for superior thermal performance
  • True sloped sill for fast water run-off and easy cleaning
  • Draftblocker™ off-set compression sash design for air-tight seal and added security.
  • Light Lift™ SP (Superior Performance) balances for easy operation
  • Integral off-set balance pockets and multiple weather-strip paths to reduce air infiltration
  • Tripled-secured sash & frame corners: mortise & tenon joined chemically or fusion-welded frame and sash, stainless-steel screw fastened
  • Tilt in sashes for easy cleaning from inside your home
casement

Casement/Awning

Model 9800 Casement/Awning

Exclusive Light Lift™ SP (Superior Performance) Sash Balance System on all CompositWood Double Hung Windows
Constant Force, Constant Clean, T-Lock Balance

CompositWood double-hung windows are built exclusively with the Light-Lift SP (Superior Performance) Balance System. Light-Lift SP insures consistent, easy-to-manage tension whether opening or closing. It has built in dust plugs which help keep coils free of dust and debris and also act as weatherstripping, for additional energy efficiency.

EnviroSealed Windows.

CompositWood, the next generation of windows, is a revolutionary material blended with timeless design that surpasses the ambitions of even the most well known window manufacturers.

What is CompositWood?

CompositWood is made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. CompositWood is simply the best window you can buy. It provides the warmth of a finely milled wood window without the problems associated with wood.

Why CompositWood?

Nothing defines a home like the elegance and warmth of wood windows, but the maintenance problems and expenses associated with wood are simply overwhelming. 
Metal and vinyl clad wood windows were only partial solutions. In the industry-wide pursuit of window excellence, CompositWood is the answer.

  • Classic wood casement window designed frame and sash for an elegant appearance
  • Solid core frame and sash for superior thermal performance and strength
  • Draftblocker™ compression seal design and multipoint sash locking hardware for incredible air-tight performance and added security
  • Tripled-secured sash & frame corners: mortise & tenon joined and chemically welded sash, fusion-welded frame, stainless-steel screw fastened
  • Aesthetically pleasing low profile folding handle does not interfere with window blinds, concealed hinge hardware
  • Inside mounted weather-stripped screen system deters insects 90­° sash pivot for easy cleaning from inside your home
cw-slider

Slider

Model 9800 Slider

EnviroSealed Windows.

CompositWood, the next generation of windows, is a revolutionary material blended with timeless design that surpasses the ambitions of even the most well known window manufacturers.

What is CompositWood?

CompositWood is made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. CompositWood is simply the best window you can buy. It provides the warmth of a finely milled wood window without the problems associated with wood.

Why CompositWood?

Nothing defines a home like the elegance and warmth of wood windows, but the maintenance problems and expenses associated with wood are simply overwhelming. 
Metal and vinyl clad wood windows were only partial solutions. In the industry-wide pursuit of window excellence, CompositWood is the answer.

  • Classic wood casement window designed frame and sash for an elegant appearance
  • Solid core frame and sash for superior thermal performance and strength
  • Draftblocker™ compression seal design and multipoint sash locking hardware for incredible air-tight performance and added security
  • Tripled-secured sash & frame corners: mortise & tenon joined and chemically welded sash, fusion-welded frame, stainless-steel screw fastened
  • Aesthetically pleasing low profile folding handle does not interfere with window blinds, concealed hinge hardware
  • Inside mounted weather-stripped screen system deters insects 90­° sash pivot for easy cleaning from inside your home
picturewindows

Picture Window & Special Shapes

​Model 9800 Picture Window & Special Shapes
Exclusive Light Lift™ SP (Superior Performance) Sash Balance System on all CompositWood Double Hung Windows
Constant Force, Constant Clean, T-Lock Balance

CompositWood double-hung windows are built exclusively with the Light-Lift SP (Superior Performance) Balance System. Light-Lift SP insures consistent, easy-to-manage tension whether opening or closing. It has built in dust plugs which help keep coils free of dust and debris and also act as weatherstripping, for additional energy efficiency.

EnviroSealed Windows.

CompositWood, the next generation of windows, is a revolutionary material blended with timeless design that surpasses the ambitions of even the most well known window manufacturers.

What is CompositWood?

CompositWood is made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. CompositWood is simply the best window you can buy. It provides the warmth of a finely milled wood window without the problems associated with wood.

Why CompositWood?

Nothing defines a home like the elegance and warmth of wood windows, but the maintenance problems and expenses associated with wood are simply overwhelming. 
Metal and vinyl clad wood windows were only partial solutions. In the industry-wide pursuit of window excellence, CompositWood is the answer.

  • Solid core frame and sash for superior thermal performance and strength
  • Select from 3 picture window designs: Match your operating window styles and sightlines with Double Hung Sash Insert or Casement Sash Insert. Or maximize your view of the outside world with a very Narrow Frame Direct Set design.
  • Tripled-secured corners: mortise & tenon joined and chemically welded sash, fusion-welded frame, stainless-steel screw fastened.
bayandbow

Bow & Bay Windows

Model 9800 Bow & Bay Windows

Exclusive Light Lift™ SP (Superior Performance) Sash Balance System on all CompositWood Double Hung Windows
Constant Force, Constant Clean, T-Lock Balance

CompositWood double-hung windows are built exclusively with the Light-Lift SP (Superior Performance) Balance System. Light-Lift SP insures consistent, easy-to-manage tension whether opening or closing. It has built in dust plugs which help keep coils free of dust and debris and also act as weatherstripping, for additional energy efficiency.

EnviroSealed Windows.

CompositWood, the next generation of windows, is a revolutionary material blended with timeless design that surpasses the ambitions of even the most well known window manufacturers.

What is CompositWood?

CompositWood is made from a proprietary mix of specialty polymer and acrylic resins, creating an “engineered composite”, super tough, solid core material. A permanent color surface technology called “SuperCap™” is fused to the core materials during the extrusion process. CompositWood is simply the best window you can buy. It provides the warmth of a finely milled wood window without the problems associated with wood.

Why CompositWood?

Nothing defines a home like the elegance and warmth of wood windows, but the maintenance problems and expenses associated with wood are simply overwhelming. 
Metal and vinyl clad wood windows were only partial solutions. In the industry-wide pursuit of window excellence, CompositWood is the answer.

  • 3/4″ #1 Eastern White Pine struts allow for unlimited angles from 0 to 55 degrees on bows
  • 3/4″ #1 Eastern White Pine end jambs (has secondary cover to hide unsightly installation nails and screws)
  • Two interior finishes – all wood or vinyl mullions, end fillers, and stops
  • Unique weep system directs water away from channels
  • 1/4″ all-threaded steel rods between struts tie head and seat boards together for added strength
  • Foam sealant between struts for added energy efficiency
  • Maintenance free vinyl-clad exterior – available in white, adobe, bronze and custom colors

Chattanooga's Best Windows, Siding & Door Estimates

Compositwood Brochure

CompositWood® is a revolutionary material with optional real wood laminate that offers the weather-resistant, no-maintenance advantages of a composite. The solid-core material is a blend of thermoplastic alloy resins that includes both PVC and acrylic-based polymers. This unique resin combination can’t absorb moisture, so it provides a very stable material that’s ideal in cold, high-heat and high-humidity climates.
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