Fire-rated Interior Lining Solution
Fire-Rated Interior Lining Solution
This fire-rated interior lining solution uses a chloride-free sulfate MgO board as a class A1 lining board for non-load-bearing interior positions. It covers partition wall lining, window pelmets and curtain boxes, service and elevator shaft linings, and suspended ceilings — each with its own thickness, surface and assembly requirement.
A1 classifies the panel's reaction to fire. It does not establish the fire-resistance period of a complete partition or shaft wall, which still depends on framing, board layers, fasteners, infill, joints and perimeter seals. Start from the partition lining board for partitions, or from the non-combustible lining board for shaft walls for shaft constructions.
Solution Configurations by Application
| Application | Configuration principle |
|---|---|
| Interior non-load-bearing partition wall | Partition lining 8–18 mm; confirm board layers, stud spacing, finish and local fixture requirements. The board is a lining layer, not a load-bearing wall. |
| Window pelmets and curtain boxes | Window pelmet 15 / 18 mm; confirm forming, cutting, substrate flatness and track-support position. Curtain-track loads must transfer to the designed support. |
| Service and elevator shaft linings | Select shaft lining by shaft-wall construction, board layers and validated model; no universal thickness applies. |
| Suspended ceilings | 8, 9, 10 or 12 mm ceiling lining board with non-combustibility and moisture resistance; coordinate with hangers, primary and secondary framing, joints and finish. |
Suitable Projects and Buyers
This solution is intended for building-material distributors, wall-system companies, project buyers and commercial or public projects such as offices, hotels, hospitals and schools.
Its purpose is to distinguish the thickness, surface and assembly-validation requirements of different interior positions rather than apply one specification to every use. Partition wall, ceiling, elevator shaft, service shaft and curtain box each carry different fire, fixture and impact requirements.
For adjacent applications, see the ceiling and roof lining solution.
Selection Logic: Board Layers, Studs and Finish
Board layer and stud configuration come first. Confirm single or double layer, stud spacing and framing type before fixing thickness — the lining spans between studs and the complete wall carries the performance target.
Position sets the starting thickness. Partition lining 8–18 mm, window pelmet 15 / 18 mm, ceiling lining 8–12 mm, and shaft lining selected by shaft-wall construction — no universal thickness applies.
Finish build-up follows the surface. A non-woven surface suits general lining and lamination; a sanded surface suits projects needing closer control of flatness, bonding or coating.
Fire-resistance, fixture and penetration requirements are assembly-level. Target fire resistance, local fixtures, impact and service penetrations must be validated for the complete assembly, not for the panel alone.
Common Project Questions
Can one specification serve partitions, window pelmets and shaft linings?
Does an A1 panel establish the required fire-resistance period of the complete wall?
How should thickness and surface be coordinated with coating or lamination?
How do board layer and stud configuration change the lining performance?
What finish build-up is needed for a ceiling or curtain box detail?
Shared Value and Use Boundaries
A1 Non-Combustible Fire Performance
The board achieves Euroclass A1 fire rating, providing superior fire resistance as a material. This classifies the panel's reaction to fire, not the fire-resistance period of a complete partition or shaft wall system.
Ultra-Low Chloride Ion Content (≤0.01%)
Minimal chloride ions support long-term durability and corrosion resistance around studs and screws, making the board suitable for demanding interior environments.
Formaldehyde-Free and Asbestos-Free
Zero formaldehyde and asbestos content for healthier indoor air quality and safe handling during installation.
Versatile Surface Options
Available with non-woven or sanded surface finishes to meet different finish build-up and application requirements.
Information Required for Project Selection
Board position and role within the wall
Partition wall, ceiling, elevator shaft, service shaft or curtain box, plus the board's role in the assembly.
Thickness, panel size, board layers and framing
Target thickness, panel size, board layer and stud configuration, including stud spacing and framing type.
Surface type and downstream finish build-up
Non-woven or sanded surface, plus coating, wallcovering or lamination requirements.
Fire-resistance, fixture and penetration requirements
Fire-resistance, fixture, impact and service-penetration requirements of the complete assembly.
Products Applied In This Project
Chloride-Free Sulfate MgO Board for Partition Lining
A1 non-combustible partition lining board, 8–18 mm, with non-woven or sanded surface.
Fireproof MgO Board for Window Pelmet Backing
15 / 18 mm non-combustible backing for window pelmets, curtain boxes and fit-out details.
Non-Combustible MgO Board for Elevator Shaft Lining
A1 shaft lining board for elevator shaft and service shaft wall constructions.
Basic Quality Evidence
Test reports, certificates and production evidence shown externally should correspond to the actual product model, specification and test conditions. This fire-rated interior lining solution page provides basic evidence and does not use unrelated certificates to infer complete-system performance.
With the currently available materials, evidence of real production, finished-product inspection and principal certificates is sufficient. Detailed test data can remain on the relevant product or quality-certification page.
FAQ
Send Your Fire-Rated Interior Lining Requirements
Share the lining position (partition wall, curtain box, shaft or ceiling), board layer and stud configuration, target fire resistance and planned finish build-up — our team will confirm the board and complete assembly details. Contact Massif or browse the FAQs.
