Rigid microporous insulation board

SilthermSiliCore

A low-density microporous board available as a bare core or prepared format for space-efficient insulation systems.

Close-up of the Siltherm SiliCore board surface and textured edge
Product formRigid microporous board
Thickness range5-50 mm
Maximum size1200 x 650 mm
Application temperature-70 to +80°C

Product configuration and performance

Low conductivity. Tailored dimensions. Practical handling.

SiliCore is a rigid microporous board with low density and low thermal conductivity. It can be supplied bare or with an application-matched covering.

Bare white SiliCore microporous insulation board
01 / Rigid SiliCore board

Low thermal conductivity in a lightweight core.

The opacified pyrogenic-silica blend and filament reinforcement form a rigid, handleable microporous board for use as vacuum-panel core insulation.

SiliCore board in an aluminised covering
02 / Application-specific format

Dimensions and covering matched to the design.

Tailored board dimensions reduce off-cuts. Where needed, a selected covering or encapsulation can be reviewed against handling, moisture exposure and the finished panel construction.

01

Performance under vacuum

Thermal conductivity below 1 mbar is 0.0042 W/mK for Standard and 0.0038 W/mK for Plus.

02

Ambient performance

Thermal conductivity at ambient pressure is 0.020 W/mK for both Standard and Plus.

03

Temperature boundary

The application temperature range is -70 to +80°C. The covering, barrier film and finished assembly must be matched to the operating conditions.

Typical applications

Core insulation for space-critical vacuum-panel applications.

SiliCore can be used bare or prepared for thermal systems in buildings, cold-chain equipment and appliances.

01

Building and construction

Vacuum-panel core insulation for roofs, floors and facades where usable space is limited.

Open building context
02

Temperature-controlled packaging

Core insulation for vacuum panels used in boxes and packs carrying medicines, vaccines and other temperature-sensitive contents.

Open application context
03

Appliances

Vacuum-panel core insulation for water heaters, boilers, refrigerators, chill cabinets, cold-storage units, vending machines and heated food displays.

Application support available
04

Oil and gas

Core insulation for vacuum panels used to help maintain the low temperatures required for liquefied natural gas.

Application support available
05

Transport

Vacuum-panel core insulation for cabin comfort and cold-storage areas in marine, rail, automotive and aerospace applications.

Application support available

Technical documentation

Product data for design and specification.

Available in 5-50 mm thicknesses, with tailored dimensions up to 1200 x 650 mm. Contact Siltherm for current Standard and Plus data, tolerances and configuration support.

Controlled technical document

Siltherm SiliCore

Siltherm SiliCore Product Data Sheet / July 2025

Provide your professional details to request the current controlled copy. No project drawing or confidential design information is required.

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Thermal CalculationEngineering support