Structural Insulated Panel (SIP) Testing

A Structural Insulated Panel, or SIP, is a composite building material. It consists of an insulating rigid core sandwiched between two layers of structural panels, and is often used in floors, walls, and roofs for either residential or light commercial buildings.

SIPs were added to the International Residential Code, or IRC, in 2009. The code specifies applicability limits and production materials (core, facing, adhesive, lumber, screws, and nails). Section R610 of the 2015 IRC requires that all Structural Insulated Panels be manufactured under a quality control program verified by an approved third-party quality assurance agency. Each Structural Insulated Panel must be identified by a certificate of inspection or grade mark issued by the approved quality assurance agency as part of a certification program to ensure code compliance.

What NTA can do

NTA can provide testing for:

  • Core shear testing – ASTM C393: Standard test method for core shear properties of sandwich constructions by beam flexure. Watch our video.
  • Transverse testing – ASTM E72: Standard test methods for conducting strength test of panels for building construction. Watch our video.
  • Axial load testing – ASTM E72: Standard test methods for conducting strength test of panels for building construction. Watch our video.
  • Racking testing – ASTM E72: Standard test methods for conducting strength test of panels for building construction. Watch our video
  • ASTM E1803: Standard test methods for determining structural capacities of insulated panels
  • ASTM C578: Standard specification for rigid, cellular polystyrene thermal insulation
  • ASTM C518: Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

Industry Leaders in SIP Testing

Our ‘Engineered Design of SIP Panels’ white paper offers all the most current design practices for working with SIPs (you can read the Design Guide here). NTA is accredited by International Accreditation Service (IAS), under ISO/IEC 17025 to test, ISO/IEC 17020 to inspect, and ISO/IEC17065 to certify SIPs. In fact, the DIY Network chose NTA to perform SIP testing for the television series “Deconstruction”!

Industry Leaders in Certification of SIPs

In 2009, NTA partnered with the Structural Insulation Panel Association, or SIPA, to design a comprehensive certification code report for their members. NTA can issue a report showing code compliance for your Structural Insulated Panel. While the IRC covers only SIPs used in walls, with a thickness of 4-1/2 or 6-1/2 inches and a span of 8 to 12 feet, NTA can provide alternate certification for SIPs used in floors and roofing, as well as spans exceeding 12 feet. Our SIP certification program  is highly customizable (learn about our SIP Certification Program here). We work with and certify SIPs that utilize a variety of facing, core materials, and adhesive bonding systems. We offer additional code compliance testing and certification for:

  • SIPs intended for use in roofs or floors
  • SIPs intended for use in basements or single-family residential homes
  • Unusual dimensions
  • Headers and openings: windows and doors
  • Seismic resistance
  • Wind resistance
  • Fire-rated assemblies

View current and past SIP Manufactures NTA has worked with here.

For more information about our SIP Panel Testing, contact us.

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