Insulspan® Structural Insulating Panels

The Insulspan Structural Insulating Panel (SIP) system consists of performance rated oriented strand board (OSB) structurally laminated to a core of insulation. Insulspan SIPs provides building owners with a proven method of constructing walls and roofs resulting in real energy cost savings while adding resale value to the building. Insulspan SIPs use closed-cell rigid EPS insulation cores which helps reduce air leakage and thermal bridging by providing a continuous layer of thermal insulation in both wall and roof assemblies.

The Insulspan SIP System is a versatile building system that can be used in application such as Single-Family Residential, Multi-Family/Multi-Use Residential, Commercial, Community Buildings and ADUs (Accessory Dwelling Units).

Insulspan Structural Insulating Panels with EPS Cores are available in the following thicknesses:

  • 4 ½ - R 15
  • 6 ½ - R 22.6
  • 8 ¼ -R 29.2
  • 10 ¼ - R 36.8
  • 12 ¼ - R 44.4

Insulspan R-Plus Structural Insulating Panels with NEOPOR Cores are available in the following thicknesses:

  • 4 ½ - R 18.3
  • 6 ½ - R 27.7
  • 8 ¼ -R 35.9
  • 10 ¼ - R 45.3
  • 12 ¼ - R 54.7
  • Most comprehensive Ready to Assemble System in the industry
  • Energy Efficiency Construction
  • Reduced site time due to faster installation
  • On-staff design team
  • Advisors and installers available
  • Code Listed in US and Canada
Material Properties of Insulspan® SIP System

The Insulspan® SIP (Structural Insulating Panel) System is an energy efficient building system consisting of a PlastiSpan® insulation core with oriented strand board (OSB) structurally laminated to the interior and exterior faces. PlastiSpan insulation is an expanded polystyrene (EPS) insulation manufactured to meet ASTM C578, Type I, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation, and CAN/ULC-S701, Type 1, Standard for Thermal Insulation, Polystyrene, Boards and Pipe Covering.

SIP Total Thickness Thickness EPS Core & OSB Thermal Resistance Thermal Transmittance SIP Weight
Inches mm Inches mm ft2•h•ºF
BTU 		m2•ºC
W 		BTU
ft2•h•ºF 		W
m2•ºC 		lb/ft2 kg/m2
4 1/2 114 7/16
3 5/8
7/16 		11
92
11 		15.0 2.64 0.067 0.379 3.2 15.7
6 1/2 165 7/16
5 5/8
7/16 		11
143
11 		22.6 3.98 0.044 0.251 3.4 16.5
8 1/4 210 7/16
7 3/8
7/16 		11
187
11 		29.2 5.15 0.034 0.194 3.5 17.2
10 1/4 260 7/16
9 3/8
7/16 		11
238
11 		36.8 6.49 0.027 0.154 3.7 18.1
12 1/4 311 7/16
11 3/8
7/16 		11
289
11 		44.4 7.83 0.022 0.128 3.9 18.9

Note: The thermal resistance (R-value/RSI-value) and thermal transmittance (U-factor) values above are for an Insulspan SIP only at a mean temperature of 75 °F (24 °C) and do not include panel framing or connection material, interior/exterior cladding or finish materials and interior/exterior air films.

Insulspan SIP wall and roof assemblies require fewer framing members than conventional wood frame construction resulting in energy efficient building construction with higher overall thermal resistance (lower overall thermal transmittance). In addition, air leakage is one of the biggest sources of energy loss in most buildings. Air leakage rate and overall thermal resistance (or thermal transmittance) are measures used to determine the energy efficiency of building construction. Significantly lower air leakage rates are achievable for energy efficient buildings constructed using the Insulspan SIP System.

The combined higher overall R-value/RSI-value and lower air leakage characteristic for building assemblies built with the Insulspan SIP System results in significant long-term energy cost savings versus other construction methods such as wood frame construction.

Insulspan® SIP System Projects
Blogs Featuring Insulspan® SIP System

Solana

MEC Head Office

R-2000 Net Zero Energy Ready Home

Innovative First Nations - Penticton

Scouts Camp McLean

MEC North Vancouver

Energy Efficient Commercial Roofing with Insulspan SIPs

8 Reasons you Should be Building with Ready-to-Assemble SIPs from Insulspan

Plasti-Fab Commercial Construction Series – Insulated Roofing Solutions

Next Steps


Talk to a Rep

Talk to an EPS Product Specialist in your area who will help you with products and pricing.


Connect with Us

Send us your questions and one of our EPS experts will get back with you.