• {{msg}}


  • {{msg}}
Resources FAQs GMS / Parent Company Career Opportunities Credit Application Dust & Debris Protection Georgia-Pacific Dens® Products DeWalt® Lasers and Leveling Tools Quality FRP Products Fry Reglet Products Owens Corning Mineral Wool Insulation DeWalt® 60V Max Tools TapeTech® Products Knauf Insulation® Products Armstrong® 24/7 Defend™ Products STI Firestop Babcock-Davis® Access Doors Guardian Safety Products Drywall from Rocky Top Hyde Tools Armstrong VIDASHIELD Air Purification Systems Armstrong WoodWorks E-commerce Impact USG Joint Compounds Super Stud Steel National Gypsum eXP Wallboard Armstrong Drywall Grid Systems Makita 18V Brushless Tools ROCKWOOL Stone Wool DuPont Thermax Insulation USG UltraLight Drywall BlazeFrame Firestop Guardian Fall Protection DeWalt 20V Max Tools Compartmentalization Commercial Delivery Residential Delivery Fleet Capabilities Expert Advice Ordering Specialty Products Safety / Site Reviews Showrooms & Customer Pick-ups Drywall Steel Studs Joint Treatment & Finishes Acoustical Ceilings Insulation EIFS & Exterior Finishes Tools Accessories Safety Coca-Cola TownePlace Suites Miller-Motte Uncle Bob’s Self Storage Douglas Heights UTC Holiday Inn & Suites Walnut Commons Erlanger Hospital Blue Cross Blue Shield Children’s Hospital National Fitness Greystone Apartments Provision Physical Therapy ORNL Federal Credit Union Holiday Inn Express & Suites Courtyard Marriott Margaritaville LeConte Center Governors Crossing Theater Laney Crossing Retail Outlet Wilderness at the Smokies Johnson City, TN Knoxville, TN Pigeon Forge, TN

Owens Corning Mineral Wool Insulation at Rocky Top Materials

For construction customers across TN

With roots that reach back to an 1800s lab experiment that unexpectedly resulted in the creation of mineral wool, the Owens Corning Corporation has been a force of innovation from its very beginning. Today, its Thermafiber® line – the #1 specified brand of commercial mineral wool – continues to set a high standard for exceptional insulation performance.

At Rocky Top Materials, we understand the peace of mind that comes from knowing your projects are well-protected. Owens Corning Thermafiber mineral wool insulation products are available* from Rocky Top Materials at our construction yards in TN or can be delivered directly to your commercial or residential jobsites.

Contact us today or search our inventory online to learn more.

*Inventory varies by location. Call your local yard to confirm specific product availability. If we do not have it in stock at your local yard, we will be glad to order it for you.

Mineral Wool – A Strong, Smart Insulation Solution

A dense, fibrous material made from combining natural fibers (molten volcanic rock, slag, or glass), mineral wool is offered in rolls or batts and is found in a wide range of construction applications, including insulating walls, attics, ceilings, floors, and roofs.

Thermafiber® Mineral Wool Covers You in Quality

Rocky Top Materials stocks several Thermafiber mineral wool insulation products for construction pros in the southern U.S. and beyond.

Thermafiber® RainBarrier® continuous insulation products provide excellent performance in rainscreen and exterior cavity wall construction applications and are compatible with various mechanical attachment methods and air barrier systems. All RainBarrier® products are non-combustible, fire-resistant, vapor permeable, and easy to fabricate and install.

Thermafiber® SAFB™ (Sound Attenuation Fire Blankets) are mineral wool insulation batts that provide sound control and fire protection within a variety of interior UL Solutions fire-rated wall designs and floor-ceiling assemblies.

Thermafiber® Safing mineral wool provides enhanced fire protection in perimeter fire containment systems (tested to ASTM E2307), floor and wall penetrations, construction joints, and other firestopping applications. These products are noncombustible, moisture-resistant, non-corrosive, non-deteriorating, mildew-resistant, and vermin-resistant.

Thermafiber mineral wool insulation products offer:

  • Minimum 70% recycled content
  • Fire containment in rated assemblies
  • Fire-resistant to temperatures above 2,000°F (1,093°C)
  • Mold-resistance
  • Enhanced acoustical performance
  • Considerable conservation of energy and reduction of greenhouse gas emissions
  • Credit contributions in several green building programs, such as LEED® and Green Globes®

Buy Thermafiber Mineral Wool at Rocky Top Materials in TN

Tennessee construction pros — learn more about Owens Corning mineral wool insulation or start your order now. Rocky Top Materials is here to help.

Use your online account to request a quote or make a purchase now.


Don’t have an online account yet? Request an online account now. Our Customer Portal can help you work smarter and faster. Talk to your salesperson or contact us at your local yard. We are always here to help!

About Rocky Top Materials

Rocky Top Materials is a proud member of the GMS family of companies. Serving both commercial and residential customers, we offer a comprehensive inventory of construction supplies through our yards in Tennessee (Johnson City, Knoxville, Pigeon Forge). Our employees pride themselves on being hard-working, safe, and professional. Whether you need drywall, insulation, acoustical tile, tools, or other construction accessories, we've got your Tennessee construction needs covered.

About Owens Corning

In 1935, two of America’s leading glassworks companies (Corning Glass Works and Owens-Illinois) forged a partnership to share in the exploration and development of an emerging new material – fiberglass. A few years, and many advancements in the processing and application of glass in insulation later, the Owens Corning Fiberglass Corporation was born. Today, Owens Corning continues to lead the insulation industry it helped pioneer, leveraging the talent of thousands of global employees to develop sustainable insulation solutions that improve the future – for customers, suppliers, partners, and the world.

Need to talk to an expert to help with your next project?

Experienced and helpful customer service representatives are standing by ready to help.