Fire-Rated Thermal Insulation

Superior thermal insulation simply makes your building better.

A well-insulated structure, no matter what the shape or size, is energy efficient, comfortable, and tranquil – ideal conditions for your employees and your customers.

International Cellulose Corporation has developed and delivers high-performing, long-lasting cellulose spray-applied fire-rated thermal insulation solutions for a wide range of applications.

ICC’s durable, reliable commercial fire-rated thermal insulation solutions are expertly engineered, skillfully manufactured, and rigidly tested to:

  • Conserve energy
  • Reduce noise
  • Enhance work environments
  • Protect valuable construction investments
  • Resist heat flow and air circulation

Find an Installer

Our spray-on thermal insulation bonds to most commercial exposed ceiling finishes, such as concrete, steel, gypsum board, wood, and rigid insulation. Our factory-trained applicators can install our thermal insulation products to the most complex configurations, and cover exposed ceiling areas quickly, easily, and efficiently in a wide range of buildings and structures, including:

  • Office Buildings
  • Parking Garages
  • Event Centers
  • Stadiums
  • Hotels
  • Museums
  • Houses of Worship
  • Fitness Centers
  • Warehouses
  • Schools
  • Restaurants

International Cellulose Corporation is dedicated to delivering the finest thermal insulation products available to conserve energy, reduce noise, protect construction investments, and create better working environments.

Our premium insulation solutions are:

Expertly manufactured

Our products are made in the United States under the ISO 9001:2015 Quality Management System – an international standard we stringently follow to provide quality products that meet your most demanding requirements and expectations.

Environmentally safe

Our thermal insulation consists of natural, plant-based fibers and specialty water-based adhesives. Our systems contain 80% pre-consumer recycled content and are the natural choice for sustainability and green building initiatives.

Our sustainable spray-on thermal insulation systems also meet and exceed some of the world’s most rigorous and comprehensive standards for low emissions of VOCs into indoor air.

Deliver superior performance

Our products are tested for performance & durability to meet your exacting specifications for insulation, energy conservation, and noise reduction.

Available in appealing colors, assorted finishes

We offer appealing custom colors and varying finishes that meet your design objectives while solving your thermal insulation challenges.

Providing the thermal insulation solutions you need

International Cellulose Corporation manufactures an array of spray-on thermal insulation solutions that will meet – and exceed – your exacting requirements:

K-13 Thermal Insulation

Spray-applied thermal insulation typically used as exposed ceiling insulation, that has a Class 1, Class A Fire Rating.

K-13 High-R System

Mechanically supported insulation system for projects requiring a higher R-Value. This is a system that uses our popular product K-13 that can be spray-applied up to 10 inches thick for maximum thermal control.


A 15-minute thermal barrier coating sprayed overexposed polyurethane foam. Ure-K provides a code-approved thermal fire barrier overexposed, open, and close cell foam in existing buildings and new construction projects. Ure-K is not foam insulation.


Versatile spray-applied cellulose insulation used in wall, floor/ceiling cavities, and attics for thermal control in residential and commercial projects.

Delivering the service you deserve

International Cellulose Corporation is dedicated to delivering the finest thermal and acoustical insulation products available to conserve energy, reduce noise, protect construction investments, and create better working environments.

International Cellulose Corporation has the expertise and experience to manufacture high-performing, long-lasting superior spray insulation and commercial acoustical finishes.

We are a leader in the thermal and acoustic insulation field – our products provide the quality, durability, sustainability, and performance you need for the most challenging applications.

We are your perfect thermal and acoustic insulation partner.


  • Operating for over 50 years
  • Serving the global building materials industry


  • ISO 9001:2015 Certified
  • Factory-trained applicators
  • Customer-based service
  • Dedicated research team continually improving manufacturing processes
  • Rigid product testing