When comparing gypsum board, fiber cement board, fire-retardant plywood or other interior backing boards, evaluate non-combustibility, thickness and weight, cutting and forming quality, edge integrity, moisture stability and compatibility with the pelmet framing, lighting and curtain-track fixings.

The concealed cavity of a curtain box usually holds curtain tracks, brackets, lighting drivers and service pipes, and how sulfate and chloride MgO boards differ in moisture uptake and metal corrosion risk is set out in a separate guide.

Comparison statements must be checked against the actual models and equivalent test conditions. No competitor brand is implied.

Curtain-box backing materials should be compared for non-combustibility, thickness and stiffness, edge quality, fixing compatibility, finishing quality and moisture stability. This product can be selected in 15 mm or 18 mm according to the intended construction.

What the documents behind those figures should contain, and how to read the test scope they quote, is set out in the guide to reading an MgO board test report.

The boards below are the other MgO board roles that usually appear in the same building project. Broader combinations are grouped by application in the Massif MgO board solutions.

MgO Board Application Thickness Reference

These thicknesses support initial matching by application. Board construction and performance requirements vary by use; final supplied model, thickness and technical data remain subject to the applicable product confirmation. Load-bearing flooring rows are listed for reference only; load-bearing floors require a dedicated flooring product and separate structural design.