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THERMAX™ Insulation

Rigid foam insulation is a great solution for insulating homes and buildings when you need maximum energy efficiency. Gold Star Insulation is proud to offer foam insulation from top manufacturers in the industry—including THERMAX™.

Dow THERMAX™ insulation products are ideal for both residential and commercial applications and are high-quality. They have heavy-duty and light options to meet every need.

THERMAX™ Rigid Foam Board Insulation

THERMAX™ products are made of polyisocyanurate (polyiso) rigid board insulation. This typically comes with reflective foil facing on both sides, making it ideal for the attic, because foil helps your home reflect the sun’s energy.

THERMAX™ products include:

  • THERMAX™ Sheathing – This rigid foam insulation effectively reduces condensation for exceptional moisture control.
  • THERMAX™ (Ci) Exterior Insulation – This foil facer has one of the highest R-values available and can remain uncovered up to six months.
  • THERMAX™ Heavy Duty Insulation – This insulation has a durable finishing perfect for use in moderate-impact areas, and can be installed exposed to interiors without thermal barriers.
  • THERMAX™ Metal Building Board – This insulation is ideal for metal buildings, but is also useful for tilt-up concrete wall panels and parking garage ceilings.

Rigid foam insulation can help:

  • Reduce your utility bills and maximize the energy efficiency of your home or building
  • Make your home or building more comfortable year round
  • Reduce noises from outside and also from inside your home or building between different rooms and levels
  • Improve the performance of your air conditioner and furnace
  • Contribute to a healthier environment

We work with homeowners and builders/contractors to install rigid foam, or rigid board, insulation in homes and commercial buildings, typically for new construction projects. Contact Gold Star Insulation to learn more about our insulation manufacturers or if you want to install THERMAX™ insulation in Sacramento!

Where should you insulate in your home? Check out our interactive infographic:

Products We Install
Energy Audits

Our team can help you save money with a home energy audit and air sealing services.


Our insulation team installs batt and blown-in fiberglass insulation.


Environmentally friendly and effective, cellulose works well in homes and buildings.

Spray Foam

Gold Star Insulation is a leading installer of spray foam insulation in the Sacramento area.

Radiant Barrier

An attic radiant barrier can help keep your home cooler and more comfortable.

Insulation Removal

Gold Star Insulation provides home insulation removal services.

Air Sealing

We are committed to saving you money by sealing your attic—which is the main source of air leaks in the home.

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