Gyproc GI Ceiling Section

• Manufacturer: Gyproc (Saint-Gobain)
• Product: GI Ceiling Section — the main supporting member of a false ceiling grid
• Function: The section your plasterboard screws directly into
• Dimensions: 80 x 26 x 53 x 3660 mm
• Length: 3660 mm (12 feet)
• Material: GI — galvanised steel, for a humid ceiling void
• Knurled surface so screws bite instead of skating

Gyproc GI Ceiling Section is the main supporting member of a suspended plasterboard ceiling — the section the boards are screwed directly onto, in a 3660 mm (12 foot) length.

In a false ceiling grid this is the member that does the visible work. The intermediate channels run perpendicular above it and carry the load; the ceiling sections clip to them at regular centres and present a flat, continuous face for the plasterboard. Every screw holding your ceiling up goes into one of these, which is why the section's straightness and stiffness decide whether the finished ceiling reads as a flat plane or as a series of shallow waves under a raking light.

GI — galvanised steel — is the right material for the job, and not only for strength. A ceiling void is a humid, unventilated space where condensation forms on cool surfaces and nobody ever looks. Plain steel corrodes there quietly for years. The galvanised coating is what stops that, and it is why a ceiling grid is specified in GI rather than plain mild steel.

The knurled surface is a detail worth noticing. Those dimples give the screw tip something to bite into so it does not skate across smooth galvanised steel — which matters a great deal when you are driving a fixing overhead, at arm's length, with a board held up by somebody else.

Technical Specifications

Applications

1) Is this everything I need for a false ceiling?

No — this is one component of a grid. A complete Gyproc suspended ceiling also needs intermediate channels, perimeter channels, soffit cleats, connecting clips and hangers, plus the plasterboard and drywall screws. Work out the full list against your ceiling area before ordering, or the delivery will not let you start.

2) What is the difference between a ceiling section and an intermediate channel?

They do different jobs and run at right angles to each other. The intermediate channel carries the load and is suspended from the slab. The ceiling section clips beneath it and is what the plasterboard actually screws into. One supports, the other receives the board — you need both.

3) Why galvanised steel rather than plain steel?

Because of where it lives. A ceiling void is humid, unventilated and never inspected — condensation forms on cool surfaces and plain steel corrodes there quietly for years before anything shows. The zinc coating prevents that, which is why ceiling grids are specified in GI.

4) What is the knurled surface for?

Screw grip. The dimples give the screw tip something to bite into so it does not skate across smooth galvanised steel. That sounds minor until you are driving fixings overhead at arm's length with someone else holding the board up — a screw that wanders is a screw that misses the section entirely.

5) How far apart should the sections be spaced?

That depends on your board thickness and the span, and it should follow the design or Gyproc's system guidance rather than a rule of thumb. The trade-off is straightforward: wider centres use fewer sections and cost less, but a ceiling that is under-supported sags into shallow waves that become obvious under raking light — and by then the boards are up and skimmed.

1. Return within 24 hours of delivery for:
   • Damaged or defective product
   • Wrong or missing item
2. Product cannot be returned once installed or used
3. Refer to Refund Policy for complete details

Please check the sections for bends or transit damage on delivery — a bent section transfers its bend into the finished ceiling.