Whispertone® Wallboard & Tackboard Fiberglass Boards

Whispertone® Wallboard & Tackboard Fiberglass Boards

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Whispertone Fiberglass Board Insulation for Applications Focusing on Reducing Thermal Transfers and Reducing Sound Transmissions

Whispertone® Wallboard acoustical panel fiberglass insulation can be used in a variety of applications. Fiberglass insulation is the most widely used insulation because of its excellent thermal and acoustical properties. As a Select Master Fabricator for Johns Manville, Pacor has access to the broadest line of industrial fiberglass insulation products in the industry. Whispertone® can be made into specialty cut shapes and pieces to particular customer specifications. Contact a Pacor insulation specialist today to find out if Whispertone® fiberglass board is the solution to your insulation needs.


Whispertone® is a rigid, board-type fiberglass insulation manufactured from fine, rotary-process glass fibers bonded with a special thermosetting resin. The top surface is smooth and uniform in color. This fiberglass board provides superior acoustical as well as thermal capabilities.


Whispertone® fiberglass insulation is well-suited for use in office partitions, ceiling panels, wall panels, and HVAC equipment in an effort to reduce thermal transfer and reduce sound transmission. Because the glass fibers in Whispertone® are extremely fine, they create an enormous number of minute air spaces, making the insulation highly effective for sound and heat absorption.

This product is available plain or with fiberglass mat facers on one or both sides for use in a variety of applications. FSK can be adhered to the bottom side only.


Whispertone® fiberglass board has excellent acoustical performance. The countless air spaces in Whispertone® creates effective sound absorption. Perceived noise from air movement and mechanical equipment is noticeably reduced.

The high tensile fibers resist settling, breakdown, or sagging from vibration. They yield readily to impact and protect facings from puncture. The properties of this product assure easy handling and fabrication. This fiberglass board also is moisture and fungi resistant.

Custom Fabrication

Pacor can provide specialty cut shapes and pieces to particular customer specifications. As an industrial insulation specialist with over 90 years of experience, Pacor provides fabricated insulated parts to major manufacturers both in the US and Globally. Contact one of our product specialists for your industrial insulation solution today.


Temperature Limit: 250°F (121°C)
Width: 24 – 96 inches
Density: 3.0 to 6.0 pfc
Thickness: 5/8 – 2 inches