Name: SUPACEIL™
Brand: Gyprock

Gyprock Supaceil stands above the rest when it comes to plasterboard in ceilings. Optimised Core technology provides significantly improved strength, handling, and performance in this lightweight 10mm thick plasterboard.

Product Details

SUPACEIL™ was the first plasterboard in Australia manufactured with Optimised Core technology. CSR Gyprock developed it specifically to address the most common ceiling complaint on residential sites: boards that sag, especially when heavy ceiling insulation is loaded above. The Optimised Core delivers a superior strength-to-weight ratio — greater breaking strength in a board that weighs only 6.1 kg/m² (6.2 kg/m² in WA), meaning it resists sag and resists fixings pulling through under load.

The board spans up to 600mm joist centres, making it the correct choice for modern open-plan residential builds where ceiling frames are typically set at that spacing. The thicker face paper also produces cleaner cuts and squarer edges, reducing waste and finishing time.

SUPACEIL™ is available from Aussie Plasterboard's Osborne Park warehouse and delivered across WA. It is part of the broader plasterboard range stocked by Perth's most experienced wall and ceiling supplier.

Best For

Residential ceilings on 600mm joist centres
Ceilings with heavy bulk insulation installed above
Open-plan living areas where ceiling span and flatness matter
Renovations and extensions where existing framing is at 600mm centres
Projects where SUPACEIL™ is used for ceilings and Gyprock PLUS™ is used for walls — an efficient two-product residential system
Any non-wet-area ceiling in residential or light commercial applications

Why Builders Specify It

Spans 600mm joist centres — no need to add extra ceiling battens or change the framing set-out
Stays flat under heavy insulation loads — the reinforced core resists fixture pull-through
Lightweight at 6.2 kg/m² (WA) — reduces fatigue during overhead installation
Non-combustible per BCA Clause C1.12 — compatible alongside Fyrchek™ in buildings requiring fire-rated ceiling systems
AS/NZS 2588 compliant — accepted by building certifiers across WA without special approval

Installation Notes That Prevent Callbacks

Always fix SUPACEIL™ to framing — never unsupported. Use Gyprock fixings at the spacing recommended in the Gyprock installation guide for the joist spacing being used.
Install ceiling insulation batts before boarding where possible. If insulation is loaded after boarding, confirm the joist spacing and load are within SUPACEIL™'s rated span. For higher insulation loads, pair with Fletcher Insulation chosen to match the ceiling load specification.
Cut using a sharp knife and straight edge — the thicker face paper scores cleanly, but a worn blade will tear rather than cut.

Finish using appropriate jointing compounds. Explore the Compounds range for setting and drying compounds.

Ready to spec SUPACEIL™ on your next project? Request a quote and our team will confirm availability and delivery to your WA site.

What is the maximum joist spacing SUPACEIL™ can span?

SUPACEIL™ is rated for ceilings with joist or batten centres up to 600mm. For 450mm centres, Gyprock PLUS™ is an equally valid and slightly lighter option. SUPACEIL™ is the correct product when the framing is set at 600mm — a common residential standard in Perth new construction.

Can SUPACEIL™ handle heavy ceiling insulation above it?

Yes. The Optimised Core technology increases the board's resistance to sagging under load, which is particularly important when thick batt insulation is placed on top of the ceiling lining. This is the primary reason builders in WA specify SUPACEIL™ over a standard 10mm board for ceilings.

Is SUPACEIL™ suitable for wet areas such as bathroom ceilings?

No — SUPACEIL™ does not have moisture resistance treatment. For bathroom, ensuite, or laundry ceilings, specify Aquacheck™ or Sensitive, both of which offer moisture-resistant properties for wet area use.

What jointing compound should I use with SUPACEIL™?

Use a setting compound for the tape coat and first fill coat to build strength, then follow with a drying compound for finish coats. See the Compounds range for current options.

How does SUPACEIL™ differ from Gyprock PLUS™?

Both boards use Optimised Core technology and are 10mm. The key difference is span capacity and core optimisation: SUPACEIL™ is engineered specifically for ceiling applications up to 600mm joist centres, while Gyprock PLUS™ is designed for wall and ceiling use at 450mm centres. Using SUPACEIL™ on ceilings and Gyprock PLUS™ on walls is a common and efficient Perth residential specification.

Can I get SUPACEIL™ delivered to regional WA?

Yes — Aussie Plasterboard delivers across all of Western Australia from Osborne Park. Request a quote to confirm lead times for your site.

Related Products

Compounds — Jointing and finishing compounds for the SUPACEIL™ system.

Gyprock PLUS™ — The wall-and-ceiling Optimised Core board for 450mm joist centres; often used as the wall board alongside SUPACEIL™.

Fyrchek™ — Fire-rated plasterboard for ceiling systems requiring a tested fire assembly.

Standard 13mm — The commercial 13mm ceiling and wall lining; heavier but suited to commercial spans.

Fletcher Insulation — Ceiling batts to pair with SUPACEIL™ for thermal and acoustic performance.

Data Sheet

Safety Data Sheet

Product Options

Gyprock Supaceil is available in the following sizes:

Thickness	Width	Length
		2400	2700	3000	3600	4200	4800	6000
10mm	900	x		x	x		x
10mm	1200	x	x	x	x	x	x	x
10mm	1350	x		x	x	x	x	x

Stockholdings of specific sizes may vary in different regions.

Product Manufacture

Gyprock Supaceil is manufactured by CSR Gyprock in Australia to stringent product specifications.

Product Handling

Transportation and manual handling: Refer to the Gypsum Board Manufacturers of Australia (GBMA) website for recommended OH&S practices.

Storage: Protect plasterboard and cornice from weather and moisture. Avoid products sagging by storing horizontally, supported on a level platform or full-width support members spaced at max. 600mm centres.

Health and Safety

Safety Data Sheets are important documents in the construction industry and assist in the continuing focus on occupational health and safety on and off sites.

Manufacturing Tolerances

Nominal Thickness	10mm ± 0.4mm
Nominal Widths	900mm, 1200mm and 1350mm ± 3mm
Nominal Lengths	From 2400mm to 6000mm ± 5mm, typically in 300mm increments
Squareness Cut ends	Cut ends ± 3mm in the width of the board

Physical Properties

Nominal Board Weight*	6.1kg/m², 6.2kg/m² in WA
Thermal Performance	0.04 – 0.05 m²K/W R-Value
Fire Hazard assessed to AS/NZS3837 AS/NZS3837 cone calorimeter test	Average Specific Extinction Area (ASEA) <250m²/kg Group Number 1 Report Reference WRA 45759
Combustibility	In accordance with BCA Clause C1.12, Gyprock Supaceil may be used wherever a non-combustible material is required by the Code.
Total Recycled Content	6.,%

*Subject to reasonable manufacturing variance.

Perth's Plasterboard Experts

Request a free Quote from our Experts

Quote Request

View the rest of our Range of plasterboards

Gyprock PLUS ™

Standard plasterboard doesn’t get better than this – ideal for use on walls and ceilings in residential environments, Gyprock Plus features Optimised Core technology, making it stronger and lighter with significantly improved board handling.

SUPACEIL™

Sensitive

Make a healthy choice with Gyprock Sensitive. This moisture resistant wall and ceiling plasterboard contains powerful antifungal properties to resist mould and mildew making it the ideal choice for wet areas and the homes of asthma and allergy sufferers.

Soundchek ™

Gyprock Soundchek provides sound control worth shouting about. This high density gypsum plasterboard has improved sound transmission properties to help maintain the peace when used in residential and commercial walls and ceilings.

Standard 13mm

This board sets the Standard for commercial applications. Gyprock Standard 13mm works as a general internal wall and ceiling lining in a huge range of commercial applications.

Impactchek ™

Bustling household or commercial environment? Gyprock Impactchek is a high-strength 13mm thick plasterboard with a reinforced core that is an ideal wall lining for high impact areas.

Fyrchek™

Gyprock Fyrchek has been developed to take the heat. Fyrchek’s specially processed glass fibre-reinforced gypsum core makes it ideal for use in fire rated wall and ceiling systems and where improved acoustic performance is required.

Fyrchek™* MR

Gyprock Fyrchek MR combines a fire and acoustic grade board with additional moisture resistance to create the ideal lining for fire rated wall and ceiling systems in wet areas.

ECO8™ Extreme

For internal linings where the highest impact resistance is critical in a multi-attribute board, such as Health Care projects especially Mental Health Facilities, as well as Correctional Facilities, Sporting Facilities, Schools and Hotels.

ECO8™ Complete

Complete by name and Complete by nature: for commercial environments, this ultimate plasterboard is specifically engineered to meet the highest standards across a broad range of performance requirements.

Aquachek™

The blue board for wet areas — moisture-resistant plasterboard for residential and commercial bathrooms, laundries, and soffits that meets BCA […]

Shaft Liner MP

Gyprock Shaft Liner MP provides enhanced protection against mould growth for extra peace of mind during the early stages of construction.

Flexible

Designed to impress, Gyprock Flexible 6.5mm plasterboard enables specifiers, designers and installers to easily create curved walls and ceilings and add visual interest to a space.