Garage Door and Door Cores
Graphite Polystyrene (GPS) is a high-performance solution for garage door insulation and entry door cores, offering enhanced thermal performance in thinner profiles. GPS’s high R-value, dimensional stability, and lightweight structure make it ideal for door manufacturers seeking energy efficiency, acoustic insulation, and manufacturing precision.
We provide custom-routed GPS panels for garage door inserts and precision-cut GPS door cores for use with fiberglass or metal skins, manufactured to meet tight tolerances and consistent quality standards.
Why Use GPS for Garage and Entry Doors?
GPS offers higher thermal resistance per inch than standard EPS, making it a smart choice for door systems that must meet strict energy codes or insulation requirements. Its closed-cell structure also provides noise reduction, air sealing, and moisture resistance, all while being easy to handle and cut during production.
Key Benefits of GPS for Doors
High and consistent R-values (4.7–5.1 per inch)
Custom-routed garage door inserts for exact panel fit
Sound-dampening and air filtration properties
Puncture-resistant and structurally stable
Laminated surfaces available for clean appearance
Door cores precision-cut to ±1/16″ tolerance
Ideal for lamination with fiberglass or metal skins
Lightweight for easier handling and shipping
Resistant to moisture, mold, and warping over time
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Our Foam Products
Foam questions?
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Learn more about the applications for our foam products.
What types of foam products do you manufacture?
Our specialties are expanded polystyrene (EPS), expanded polypropylene (EPP), and graphite polystyrene (GPS), These products have many applications, and can be used in roofing, insulation, landscaping, stabilization, exterior siding, and more.
Do you offer custom foam manufacturing?
We do have the capability to customize our products to your specific needs. In addition, we offer custom packaging, either to ensure your product arrives damage-free, or for your own shipping and packaging needs.
Which types of foam are best for each application?
Most of our applications can be made with multiple foam types, and we’ll guide you to choose the best one for your requirements. Here’s a list of what we manufacture:
- Custom packaging: EPS or EPP
- Insulated shipping containers: EPS or GPS
- Precast: EPS or GPS
- Garage doors and door cores: EPP, EPS, or GPS
- Sheathing: EPS or GPS
- EIFS: EPS or GPS
- Geofoam: EPS
- Roofing: EPS
- OEM: EPP, EPS, or GPS
Which type of foam is the best for my project?
If multiple foam types are able to be used in your project, we’ll discuss the benefits of each product and decide together what will be the best choice for your project.
Are your products sustainable or LEED-certified?
Many of our products can contribute to LEED points, depending on application and use.
