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Compositwood Windows by Interstate

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


CompositWood, is the next top window, the development, and technology behind this window design is years above their competitors. Nothing is more beautiful than the look and warmth you receive from a wood window. However, the maintenance that comes from real wood can be time-consuming and expensive

The solution to this design flaw in the window industry is simple: CompositWood.


CompositWood is produced from a mixture of specialty polymer and acrylic resins. The result is a product that is more solid, tougher and engineered to look like real wood. The surface is then colored by a  technology called “SuperCap™” which is fused into the core materials during the production process.


CompositWood windows provide excellence in performance due to they combine the most up to date technology in composite materials but with better performing glass too. The CompositWood material offers the durability of vinyl with the resemblance of natural wood. The insulation is phenomenal as well compared to other competitive products such as aluminum or wood. Combine all of this with the top glazing performer, and you have the most energy efficient window ever to be created.

Front Porch View
Black Windows


• Thermally superior composite material reduces the transfer of energy better than the competitors

• A better energy efficient window = a noticeable reduction in utility bills

• Higher performing glass system for more savings

• Surpasses ENERGY STAR® energy performance criteria

• CompositWood windows reduce air infiltration with many weather-strip paths with beveled compression-sealed sashes and jambs.

• Comfort due to fewer drafts resulting in a better climate controlled house with no effects from the outdoor elements

• Enhances the inside and outside of your house with the look of real wood

• Premium performance hardware ensures easy cleaning and operation


SuperCap, a permanent pre-finished surface which undergoes 4 years of outdoor sun exposure testing in both Florida and Arizona. A lifetime of virtually zero-maintenance benefits, SuperCap continues to keep doors and windows looking their best over time. The cap raises protective ingredients to the profile surface, where they provide superior weathering performance.


CompositWood® does not absorb water which will leave your windows resistant to wood rot and free of insects. CompositWood is also beneficial to those who live in coastal regions and are familiar with corrosion brought on by the salt in the air. 


With CompositWood windows you can say goodbye to cracking, peeling, chipping and chalking. Your new windows can withstand the extreme elements of where you reside and have exceeded industry standards in structural stability and heat resistance testing. In independent lab testing, CompositWood is 2.7 times stiffer than hollow PVC, and as measured by screw retention, CompositWood is over 500% more secure than fiberglass and 400% better than hollow vinyl.



CompositWood® provides excellence in performance with the rigid pre-finished SuperCap™ surface, it has the lowest thermal conductivity compared to competitive window frame materials. CompositWood can be chemically or fusion welded to create superior, weather-proof joints – unlike fiberglass, aluminum or wood that require mechanical fastening and sealants that can fail over time. Due to the chemical makeup, the window is also recyclable friendly. 

BACKED BY A LIFETIME WARRANTY Interstate’s CompositWood® windows are lifetime warranted against defects in material and workmanship under normal use and service.



With thermal performance values that are high, CompositWood® windows exceed Energy Star criteria. CompositWood products are AAMA and NFRC certified, then independently 3rd party verified to further ensure they meet or exceed industry structural and energy efficiency standards. CompositWood windows can double the Energy Star U-factor insulating efficiency value in the most extreme northern climate, and surpass up to three in the Energy Star U-factor window insulating qualification for the southern climate zone.

U FACTOR: Measures the rate of window heat transfer. The lower the U Value, the better the window insulates.

K-VALUE: Measures the ability of a material to allow the flow of heat from its warmer surface through the material to its colder surface. The lower the K-Value, the better.

A newer way to distinguish and recognizes products which deliver energy efficiency along with the latest technological innovation. This is an award that  represents the very best of energy star. In 2016, many CompositWood windows earned the ENERGY STAR Most Efficient mark.


  • Double Pane: Low E + Clear; Argon
  • U-factor:

.25 – Double Hung, Slider

.23 – Casement, Awning

.21 – Double Hung w/Dual Energy Saver IS

.22 – Slider w/Dual Energy Saver IS

.20 – Casement, Awning w/Dual Energy Saver IS*


  • Triple Pane: Low E + Low E + Clear; Argon + Argon
  • U-factor:

.19 – Double Hung, Slider *

.18 – Casement, Awning *

.17 – Direct Set Picture Window*


Triple Pane: Low E + Low E + Clear; Krypton + Krypton

  • U-factor:

.16 – Double Hung *

.15 – Slider

.14 – Casement, Awning *

.13 – Direct Set Picture Window*

+All values based on 2.3 mm glass pane thickness. Results may vary with different glass thicknesses, tempered glass, grid applications and other specialty glass types.


The Duralite Spacer System insulates glass edges better than solid foam or metal spacers. The hollow design traps air to deliver the maximum thermal performance.The patented air pocket design creates the lowest U-value available.

CompositWood windows have been designated as “Envirosealed” windows through the use of the Duralite Spacer System technology, which saves energy, the environment and more.


  • Interstate has a 95% argon/krypton gas fill rate—which is an industry best.
  • The OptiGas advanced, precise gas filling system allows individual insulated glass units to reach full potential to create ultimate U-factors.
  • OptiGas is able to measure the exact amount of argon or krypton gas flowing into each insulated glass unit to control the gas fill, which ensures optimal thermal performance and energy efficiency.


• Multistage water purification system eliminates over 90% of tiny particles which creates smooth and clean glass units.

  • Ionized water is introduced to ultraviolet lighting which kills bacteria.
  • Exceptionally clean glass, minimal detergent use, and glass panes that aggressively adhere to the DuraLite spacer for the very best insulated glass seal.
  •  Water use is at a minimum to conserve natural resources.


• Air entering the clean room is filtered to eliminate dust and other pollutants, keeping the glass clean.

  • Technicians wear specialized gloves and surgical masks to prevent finger print contamination of the insulated glass units.
  • Positive pressurization forces filtered air from the clean room, eliminating potentially dusty regular plant air from entering.
  • Climate controlled for optimal air temperature application of DuraLite insulating glass spacer while created a comfortable work atmosphere for the technicians.
  • Air is dehumidified to assure the perfect humidity levels, which helps aid in the creation of the best insulated glass seal.

LIGHT-LIFT™ SP (Superior Performance) New 3rd Generation Double Hung Window Sash Balance System

  • Smooth and quietly operates – sashes raise & lower with ease
  • Enables full egress without limiting sash travel
  • Interlocking pivot bar provides a higher structural performance rating
  • Tilts in for easy cleaning. Lifts out for easy sash removal
  • High-quality stainless steel coils prevent rot and lengthen the lifetime of the product
  • The same high-quality coils are used in the aerospace and military industries for counter-balance on Mars Rover Curiosity, tanks, submarines and more. 

Window Options

Tilt-In Double-Hung

  • Classic wood window designed frame and sash to create a classy look.
  • Solid core frame and sash for superior thermal performance and durability
  • True sloped sill for quick water run-off and easy to clean
  • An off-set compression sash design for an air-tight seal and added security. Light Lift™ SP balances for easy opening and closing
  • Integral off-set balance pockets and multiple weather-strip paths to reduce air infiltration
  • Tripled-secured sash & frame corners: mortise & tenon joined and chemically or fusion-welded sash, fusion-welded frame, stainless-steel screw fastened
  • Tilt in sashes for easy cleaning from the interior of your home

Horizontal Slider WINDOW STYLES

  • Classic wood window designed frame and sash for added style
  • Solid core frame and sash for superior thermal performance and strength
  • An off-set compression sash design for air-tight seal and added security
  • Multiple weather-strip paths to reduce air infiltration
  • Tripled-secured sash & frame corners: mortise & tenon joined, fusion welded frame, stainless steel screw fastened
  • Lift-out sashes for easy cleaning from the interior of your home

Casement & Awning

  • Classic wood casement window designed frame and sash for a stylish look
  • Solid core frame and sash for superior thermal performance and strength
  • An off-set 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 or fusion 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 which blocks insects
  • 90° sash pivot for easy cleaning from the interior of your home

Picture Windows

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

Bays & Bows

  • 3/4” #1 Eastern White Pine struts allow for unlimited angles from 0 to 55 degrees on bows BAY STRUCTURE BOW STRUCTURE
  • Two interior finishes – wood or vinyl, end fillers, and stops
  • Easy to install
  • 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

CUSTOM PAINT FINISHES 34 Special Order Exterior Colors:*


Inside, select solid SuperCap® white or CompositWood’s Eastern pine veneer that can be stained or painted to suit your needs. Outside, choose from SuperCap white or SuperCap bronze (white interior); 14 in-stock factory painted colors; over 30 special order colors; and virtually unlimited custom matched colors (15-year paint warranty)


CUSTOM PAINT FINISHES 14 In-Stock Exterior Colors*

CUSTOM PAINT FINISHES Unlimited Color Match Exterior Colors Custom blended colors available to suit your design needs – limited only by your imagination!

Hardware Options


All CompositWood windows arrive with the industry’s finest hardware system. The operators, locks, and hinges have all been developed to work together to meet or exceed industry performance requirements. CompositWood utilizes only the strongest, beautiful design, easy to operate and highest performing hardware available in the market.

Grid Options

COMPOSITWOOD® Grids add a specialized look to your home’s curb appeal. Grids Between Glass (GBGs) afford easy cleaning. Simulated Divided Lites (SDLs) are permanently adhered to the glass panes inside and out and are designed to look like a true multi-paned window.

CompositWood Grids:


  • White
  • Adobe
  • Bronze Exterior/White Interior
  • Custom Painted


  • White
  • Adobe
  • Bronze Exterior/White Interior


    • White (exterior & interior)
    • Bronze exterior/White interior
    • White exterior/Pine Interior
    • Removable Grids with Frame Surround, interior mounted
    • Custom Painted

* Only Flat and exterior Simulated Divided Lites can be custom painted.

Check Rail

A 2- inch wide Simulated Divided Lite installed on the exterior and interior glass surfaces of Casement or Picture windows, creates the appearance of Double Hung windows

3rd party endorsements


The National Fenestration Rating Council is a non-profit organization created by the window, door and skylight industry. It is comprised of manufacturers, suppliers, builders, architects and designers, specifiers, code officials, utilities and government agencies. NFRC provides consistent and accurate information to measure and compare the energy performance of window, door, or skylight products. The NFRC label rates U-factor, Solar heat gain (SHGC), Vis


ENERGY STAR was created to help consumers easily identify products, homes, and buildings that save energy and money, and help protect the environment. As the government-backed, trusted symbol for energy efficiency, the ENERGY STAR label identifies highly efficient products and designates superior energy performance in homes and buildings. ENERGY STAR qualified windows today are, on average, twice as efficient as the average window made ten years ago and can help reduce your energy bills significantly.


Products that are recognized as the Most Efficient of ENERGY STAR in 2016 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 2016.


The Keystone Certification Program provides independent third party assurance that CompositWood windows meet ANSI/AAMA/ WDMA 101/IS2-97 structural specifications. All CompositWood windows with low E/argon are NFRC, Energy Star and Keystone certified. We proudly display our Gold Keystone Certification label in the head of each window, which assures that your window meets the requirements of the American National Standards Institute


The AAMA VMC members include manufacturers of windows, doors, skylights and related building products and their component and material suppliers. Collectively they advocate the development of voluntary technical standards, extrusion, profile certification, marketing, green and sustainable fenestration products and educational programs.

The Hatch Difference

Each window that Hatch Homes provides our customers is installed by certified and trained craftsmen. Let us show you the difference that new high-performance windows can make on your home!