Nu-Seal Polyurethane Spray Foam

The GREEN Alternative
Nu-Seal Spray Polyurethane Spray Foam

High in performance, Nu-Seal is a foam insulation system that contains high bio-based raw material making Nu-Seal one of the greenest foam insulation systems in the marketplace. Nu-Seal Polyurethane Spray Foam passes all ASTM testing for foam insulation products.

Formulated exclusively for resale by Nu-Wool Co., Inc., the oldest cellulose insulation manufacturer in the world, Nu-Seal Polyurethane Spray Foam is installed by trained Nu-Wool Dealers.  Due to its renewable content, Nu-Seal Foam Insulation is a more environmentally friendly foam insulation product for insulating the walls and attic of structures.  Likewise, Nu-Seal Foam Insulation is the best product to complement Nu-Wool Premium Cellulose Insulation to cost-effectively seal a structure’s thermal envelope.  Nu-Seal Polyurethane Spray Foam is the recommended GREEN alternative to fiberglass and other petroleum based foam products to insulate rim joists, knee walls, cathedral ceilings, and other areas difficult to spray with cellulose insulation.  Nu-Seal Polyurethane Spray Foam can be used in commercial, residential or agricultural structures and meets ICC-ES code requirements.

Green Product and Development

Traditional chemistry used to make foam insulation is based solely on petroleum building blocks. Utilizing renewable content such as natural agricultural oils and sucrose, the amount of petroleum in Nu-Seal Polyurethane Spray Foam is reduced by 15-30% compared to other 100% petroleum based foam systems.

As a result, Nu-Seal contains more renewable content, but still maintains the performance and physical properties of 100% petroleum based systems- truly a GREEN product.  In addition to using less petroleum in the development process, Nu-Seal 0.50 is water blown instead of chemically blown, which is also better for the environment.

Product Lineup 

Nu-Seal 0.50 pcf Polyurethane Spray Foam

  • B-component of a two-component polyurethane foam insulation system
  • Water blown
  • 0.50 pcf spray in place density
  • R-Value - R13 at 3.5” and R38 at 10.1”
  • Open cell
  • Contains 26% bio-based content (ASTM D-6866)

Nu-Seal 2.0 pcf Polyurethane Spray Foam

  • B-component of a two-component polyurethane foam insulation system
  • EPA approved Zero ODP blowing agent
  • 2.0 pcf spray in place density
  • R-Value - R21 at 3.5” and R38 at 6.5”
  • Closed cell
  • Contains 15% bio-based content (ASTM D-6866)
  • Code compliant

Introducing:  Nu-Seal Plus Polyurethane Spray Foam

Nu-Wool has successfully launched the latest spray polyurethane foam (SPF) insulation specifically designed with the homeowner and contractor in mind.  The trusted brand you know, now offers over 40% more yield compared to traditional closed cell insulation. 

Nu-Seal Plus is a ZERO Ozone Depleting insulation with NO Global Warming Potential (GWP).  This two-component, semi rigid spray polyurethane foam insulation complies with the International Code Council’s AC377 standard for foam insulation and certified by GreenGuard for its non-emissive low VOC technology.  Nu-Seal Plus offers a self-adhering, seamless insulation that can be used in many areas of the building envelope, including, open wall cavities, crawlspaces, perimeter rim joists, cathedral ceilings and garage ceilings.

As the industry is required to reduce Global Warming Potential in the insulation products they offer, Nu Seal Plus exceeds the standard that will need to be met by 2020, TODAY!


  • ZERO Global Warming Potential (GWP)
  • Superior yield with over 40% improvement to traditional closed cell Spray Foam Insulation.
  • Allows contractors ease of application with excellent substrate adhesion!
  • Low VOC formulation with UL GreenGuard Gold Certification
  • Achieves R-21 in a 2 x 4 wall
  • Class II Vapor Retarder at 2 inches


  • Attics & Crawl Spaces
  • Walls
  • Ceilings
  • Metal Buildings
  • Concrete Walls

Nu-Seal Equipment and Service 

Known for superb dealer support and service in the cellulose industry, Nu-Wool Co., Inc. is now dedicated to providing similar support to dealers who install Nu-Seal Spray Polyurethane Foam through a new division, Nu-Seal Equipment and Service.  Nu-Seal Equipment and Service offers foam equipment sales, service and parts supply for Graco spray foam installation equipment.  Technical support will continue to be provided to help customers effectively install Nu-Seal Foam Insulation.

Please call 800-748-0128 or email for more information on equipment and service.