Continuous Insulation Systems

Continuous Insulation, (CI) is defined by The American Society of Heating, Refrigerating and Air-conditioning Engineers, (ASHRAE), as "insulation that is continuous across all structural members without thermal bridges other than fasteners and service openings", and has been an energy code requirement since 2007. Thermal bridging occurs when an area or component has higher thermal conductivity than the surrounding material.

Building components such as steel studs are very good thermal conductors. Without a layer of continuous insulation in the building envelope, a wall can lose up to half of its R-value through thermal bridging. R-value is is the measure of a building partition's resistance to heat flow through a given thickness of material. The higher the R-value the greater the insulating effectiveness. Continuous Insulation is fabricated from materials with high R-values such as Owens Corning Thermofiber RainBarrier® Rain Screen & Cavity Wall Continuous Insulation.

Zero thermal bridging can be accomplished with the use of proprietary sub-girt and universal cladding attachments fabricated from non-thermally conductive materials such as fiberglass reinforced plastics, (FRP), such as the StronGirt™ Continuous Insulation System manufactured by Strongwell.


  • Light weight 100% FRP system (no metal to rust or react).
  • Thermally efficient replacement to metal cladding attachment systems.
  • Superior pullout strength and can be installed vertically or horizontally depending on construction requirements.
  • Works with all non-proprietary insulation.
  • No in-field fabrication required.
  • Invisible in rainscreen cavities.
  • Double fastening system on front flange.
  • Code compliant

Continuous insulation systems can dramatically reduce the cost to heat and cool a building, as well as reduce moisture damage.

Strongwell's STRONGIRT™ is the ideal continuous insulation (CI) cladding attachment support system. This all-FRP (fiberglass) pultruded composite uses a custom fire-retardant resin system and unique laminate design to offer superior pull out strength, excellent thermal efficiency, and the ability to work with any non-proprietary insulation no routing or fabricating of rigid insulation is required).


  • Fiberglass Reinforced Plastic, (FRP), Girt Attachment Members
  • Insulation: Polyisoyanurate, polystyrene, mineral wool, fiberglass, and spray foam
  • Open or Closed Frame Installations
  • Horizontal or Vertical Girt Orientation
  • Structurally and Thermally Superior To Steel
  • ASTM E84 Class A Rating, UL94 V0, NFPA 285 Compliant

Why should I choose the Strongwell StronGirt™ Continuous Insulation Cladding Attachment Support System?

Made in The U.S.A., Strongwell is the preferred supplier, best value producer, and leading innovator of pultruded composites and structures. Their mission is to manufacture high quality pultruded fiber reinforced polymer composites and structures that solve problems and provide value for their customers.

With many manufacturer's to choose from, the most important thing to consider is who will you be working with? The role of manufacturer's representative is crucial in being the liaison between the customer and the continuous insulation system manufacturer. Are they knowledgeable, responsive, and dedicated to your project?

A.L Harding & Co. LLC has been proudly servicing the architectural community, construction industry, and building owners in Western Pennsylvania and West Virginia since 1986. We are dedicated to our customers, and will be there right along side you to ensure a successful project.


To get started on a project or learn more about continuous insulation systems, give us a call at 724-745-3001, or CLICK HERE to send us a message.


SmartCi Continuous Insulation Specifications