A subsidiary of Saint-Gobain, one of the world’s largest and oldest building products companies, CertainTeed and its affiliates have more than 6,300 employees and more than 60 manufacturing facilities throughout the United States and Canada.

Product Types

  • Fiberglass - Fiberglass insulation delivers long-lasting energy efficiency and thermal performance for quiet and comfortable spaces.
  • Batts & Rolls - Easily insulate any part of the home, from the basement to the attic, with these pre-cut sheets of fiberglass insulation designed to manage temperature and acoustics.
  • Blown-in - Easily insulate those hard to cover areas such as ceilings, floors, and walls with this energy-efficient, loose-fill fiberglass insulation.
  • Mold Prevention - Creating healthier indoor living environments with innovative moisture management and mold-inhibiting products.
  • Air Tightness - Meet growing air tightness requirements and successfully manage comfortable temperatures, moisture, sound, and allergens by creating superior building envelopes.
  • Fire Performance - Our comprehensive product line helps prepare you to meet fire safety codes and requirements for any new build, retrofit, or remodel job, big or small.

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Moisture in homes is unavoidable, making moisture in wall cavities nearly inevitable -- and dangerous if not properly addressed.  CertainTeed's MemBrain™ Continuous Air Barrier & Smart Vapor Retarder is the industry's most advanced technology to create a better performing home.

In "mixed climate" parts of the country, where homes heat in the winter and cool in the summer, homeowners using traditional polyethylene vapor retarders may actually trap moisture in the cavity during the summer -- increasing the risk of costly moisture and mold issues, structural damage, health consequences, and liability.

This patented, revolutionary solution can provide a continuous air barrier along with advanced moisture management in a single product, helping achieve complete comfort. It's another reason why choosing CertainTeed means you're installing much more than trusted high-performance insulation products. You're installing confidence.

membrainLow Humidity

Remains tight in winter when humidity in the cavity is low, to prevent moisture from entering.

High Humidity

Increases permeability in summer to let moisture escape, helping to keep the wall dry.

  • Continuous indoor air barrier creates a better performing building envelope.
  • Dynamic performance and permeance rating compared to traditional kraft insulation or polyethylene sheeting.
  • Senses and adapts permeance to varying humidity throughout the year to keep the cavity dry.
  • When installed with standard tape and sealing practices, creates an air barrier that has been tested under stringent performance guidelines.

Where to Use MemBrain?

Vapor retarders are required by code in zones 4C and above. However, MemBrain is ideal for any area where the home cools in the summer and heats up in the winter.

  • Ceilings
  • Crawl Spaces
  • Basements
  • Bathrooms
  • Laundry Rooms
  • Kitchens
  • Exterior
  • Walls

InsulSafe SP

From the company that invented Premium Blowing Wool

InsulSafe SP is a fiberglass blowing insulation used in residential and commercial construction as a thermal and sound absorbing insulation. It is designed for pneumatic installation in open (attic) and closed (sidewalls/floor) construction cavities. It may be used in retrofit applications.

Prinsulsafeoduct Benefits

  • Better coverage
  • Thermally efficient
  • Excellent sound control
  • Won't settle
  • Lasts for the life of the home to reduce energy demand and costs
  • Environmentally sustainable
  • Non-combustible
  • Non-corrosive
  • Won't rot or decay
  • Won't absorb moisture or support fungus growth
  • GREENGUARD Gold Certified
  • Limited lifetime warranty
  • Formaldehyde-free

Sustainable Insulation

CertainTeed is dedicated to Building Responsibly™ with fiberglass insulation products that are engineered, produced, and shipped with a commitment to minimizing environmental impact and improving energy savings.

Quality of Living. Easy to Maintain.

CertainTeed Sustainable Insulation® brings you long-lasting comfort through thermal performance, reduced noise levels and exceeds California's strict Indoor Air Quality Requirements, all the while saving 12 times as much energy in its first year as the energy used to produce it. Plus, it will last for the life of the building as it won't settle, accumulate moisture, or lose its R-value over time.

Renewable. Recycled. Plant Based.

CertainTeed Sustainable Insulation is made of fiberglass that consists of rapidly renewable content, a high percentage of recycled glass, and a new plant-based binder that has no formaldehyde, harsh acrylics, dyes, or unnecessary fire retardants added.

Make it. Move it. More Efficient.

For years, CertainTeed has efficiently produced and delivered high performance insulation, creating a positive impact on the environment. By reducing energy and water during manufacturing, CertainTeed continues our commitment to zero waste production. In addition, our highly compressed packaging allows us to move more products from our strategically located distribution centers, minimizing transportation needs.

Installation. Easy for Everyone.

Reducing energy is easy for everyone. Sustainable insulation is easy to handle, with a new softer touch, without compromising its rigidity or recovery. Installers can also expect less itch, dust, odor, and improved cutability.

High Performance Batts

For Extra Comfort

High-Performance Fiberglass Building Insulation Batts are intended for use in walls and cathedral ceilings where maximum thermal performance is desired and only limited space is available.


Installing High-Performance Fiberglass Building Insulation is an easy, cost effective method to help conserve energy in the residential and commercial new construction, remodeling, and re-insulation markets. In addition to its thermal properties, High-Performance Fiberglass Building Insulation also provides excellent acoustic performance. It is compression packaged for ease of handling, and its broad availability of R-values, sizes, and facings ensures the right product for the job. High-density sidewall batts are available in sizes to fit standard construction without the loss of R-value due to compression.

High-density cathedral ceiling batts allow airspace between the insulation and roof deck for ventilation. These batts meet the energy-saving requirements of today's codes without requiring changes in construction techniques.