Fiberglass Board vs. Rockwool Board

Among various ceiling materials, for spaces such as meeting rooms and audiovisual areas where specific requirements for sound absorption and thermal insulation are needed, we typically recommend users choose fiberglass boards or rockwool panels.

Of course, these two materials also have their own differences. Let’s start with safety. For instance, fiberglass boards, in addition to glass fibers, contain a large amount of epoxy resin (commonly known as glue). When used in the construction field, we typically rely on GB 8624-2012 "Classification of Fire Performance for Building Materials and Products" specifies the testing and classification process; generally, high-quality fiberglass boards can be categorized as non-combustible Class A2. ， However, in reality, due to cost constraints, most of the fiberglass boards available on the market fail to meet the measured standards. This is yet another typical case where sample testing differs significantly from actual product sampling. As for what we’ve observed—some fiberglass boards even directly label their combustion performance test as "non-combustible." A1—well, that’s purely to save on testing fees. The cost of testing for non-combustible A1 materials is more than double that of A2 materials. And since fiberglass boards are classified as composite materials, they can actually only undergo testing compliant with the non-combustible A2 grade. ; Meanwhile, some manufacturers refer to rock wool boards as basalt boards (since basalt is the primary raw material for rock wool). As for the specific production process, we won’t go into detail here—after all, even we ourselves know very little about it. All we really need to know is that basalt and other mineral materials are fed into a furnace, where they’re melted at high temperatures, and then processed through a high-speed centrifuge. Shake Fibrous, made of a single homogeneous sheet material, non-combustible Level A1 ， Rock wool exhibits outstanding high-temperature resistance, Even in high-temperature environments, it does not release toxic gases, making it significantly safer than most composite panels.

Comparing from a security perspective While fiberglass boards do possess some fire-resistant properties, their actual performance often falls short of the advertised levels due to limitations in materials and manufacturing processes. Therefore, users should carefully verify the manufacturer's qualifications and ensure the authenticity of the test reports before making a decision. The test for users is even greater.

Secondly, in terms of stability and aesthetics, we prefer fiberglass boards. Why is that? Currently, the rockwool boards available for ceiling installations typically come in lengths of... Within 1200mm, this is because rock wool boards are more prone to moisture absorption and deformation compared to fiberglass boards. As ceiling panels used for suspended ceilings, aesthetics is an indispensable factor to consider. Many applications require large-format boards, especially in today’s public corridor ceilings, where a single, continuous horizontal panel is often installed to minimize seams. This, however, places higher demands on the boards’ ability to resist deformation. In daily life, we frequently encounter instances of ceiling collapse in certain spaces—ceilings sagging downward, commonly referred to as "big bellies"—which not only detract from the visual appeal but also pose potential safety risks. These are precisely the issues we need to avoid when selecting materials.