Jasper Plastics

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Polyurethane Thermal Column Bearing Blocks

Jasper Plastics is an industry leader in medium and high density rigid polyurethane foam products.

Product Description

Performance and Simplicity


JP Series Column-Bearing Blocks are a high density, high-compressive-strength polyurethane foam that are installed between the concrete foundation and steel columns. The blocks provide a thermal break between the building interior and the supporting soils below, providing an effective thermal barrier between steel columns and the concrete foundation in low-temperature buildings, such as freezers and refrigerated warehouses. Offering a higher R-value than lightweight concrete, treated wood blocks and other materials typically used in this application, the JP Series closed-cell foam blocks are stable, non-corrosive and customized for each job for fast, easy installation. Unlike wooden blocks, these foam blocks are resistant to moisture and will not rot, dissolve or absorb water. When installed below a column, they do not promote corrosion of steel.

 Each product in the JP Series is named for its design compressive strength at 2% deflection: JP-1000 (1000 psi) JP-1500 (1500 psi) JP-1800 (1800 psi)

Advantages of JP Series Thermal Column Bearing Blocks

  • Energy Savings – Reduced thermal bridging through steel columns
  • Strength and Stability – High comprehensive strength helps meet load support needs
  • High Moisture Resistance- Closed-cell polyurethane foam resists moisture, has chemical stability and does not promote  corrosion of steel
  • Easy Installation- Cut to size blocks are delivered to the job site and factory-drilled upon request.

Easy Installation


JP Series Column-Bearing Blocks are supplied cut-to-size with pre-drilled, anchor bolt holes available per customer specifications. Delivered directly to the job site, the product is fully cured and ready to use, streamlining installation.



Custom Made For Each Job.

The JP Series Column-Bearing Blocks are made to order and delivered directly to the job site. Call or email us for delivery estimates and pricing.

Anchor bolt holes can be drilled at the factory. (Customer-supplied drawings or templates are required for factory pre-drilled anchor bolt holes. Pre-drilled anchor bolt holes should be oversized by approximately 3/8″ to allow for minor variations during installation.)


Available in three compressive strengths, JP-1000, JP-1500 and JP-1800, JP Series Column Bearing Blocks support allowable load capacity up to 1800 PSI.

Technical Data


Applicable Standards

ASTM International

  • C518 – Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
  • D1621 – Standard Test Method for Compressive Properties of Rigid Cellular Plastics
  • D1622 – Standard Test Method for Apparent Density of Rigid Cellular Plastics



Install JP Series Polyurethane Column-Bearing Blocks on clean, smooth surface. Wet blocks should be wiped or allowed to air dry before installation. Do not allow blocks to bridge voids/gaps or to sit on surface projections greater than 1/8″ high. Fast-setting cementitious leveling grout should be applied between the JP Series Column-Bearing Block and mating structure whenever possible. Do not use any damaged or broken blocks. Contact a Jasper Plastics Solutions representative for more specific instructions.

Fire Protection


JP Series Polyurethane Column-Bearing Blocks are combustible. Protect from high heat sources.

Design, use and installation must comply with the requirements of all applicable codes and is the responsibility of a qualified design professional. Product code acceptance is determined by the local authority having jurisdiction. Jasper Plastics is not design responsible.

All designs incorporating these blocks should include appropriate engineering safety factors to ensure safe and adequate performance. The designer or specification writer is responsible for product selection as well as the use and application of this information, and should contact the manufacturer to ensure that all options are available and that the associated specification information is valid and correct.

To find out more about t,he JP Series Polyurethane Column-Bearing Blocks, call 574-457-2062 or email us at contact@jasperplasticsolutions.com 

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