Flexible

Product Details

Gyprock Flexible is a 6.5mm thick plasterboard sheet with an enhanced gypsum core specifically developed to allow the board to bend and conform to curved substrates. Designers and installers can create convex curves with a minimum radius of 250mm and concave curves with a minimum radius of 450mm, opening up a range of architectural possibilities that standard flat plasterboard cannot achieve.

The board is lightweight at 4.3 kg/m² — the lowest board weight in the Gyprock plasterboard range — which simplifies handling on curved frames and reduces the effort required when bending the board around a form. Gyprock Flexible is installed in two layers to achieve the required wall thickness and structural performance; the double layer also improves the finished surface quality.

For curved walls requiring acoustic performance, consider combining Gyprock Flexible with Soundchek™ as the second layer. For jointing curved walls, flexible jointing compound from the

Best For

• Curved feature walls in residential living areas, master suites, and entry halls
• Column encasements in commercial lobbies and public areas
• Curved cinema and home theatre walls
• Artistic curved ceiling elements and bulkheads
• Designer residential projects where curved walls complement contemporary architecture — pairs with Gyprock PLUS™ for flat wall areas in the same project
• Commercial fitouts with curved reception counters or curved partition walls

Why Specifiers and Installers Use It

• Achieves convex curves to 250mm radius and concave curves to 450mm radius — tighter radii than standard plasterboard can achieve
• At 4.3 kg/m², it is the lightest board in the Gyprock range — easy to handle on curved frames, reduces fatigue during radius work
• Non-combustible per BCA Clause C1.12 — can be used in buildings requiring non-combustible linings without design compromise. For curved walls in fire-rated assemblies, discuss system compatibility with CSR Gyprock
• Double-layer installation improves surface flatness and finishing quality on radius work
• Manufactured to consistent dimensions — reduces waste from boards that do not bend uniformly

Installation Notes That Prevent Callbacks

Specifying Gyprock Flexible for a Perth architectural project? Request a quote and our team will confirm availability.

• Always install Gyprock Flexible in two layers. The first layer forms around the curve and is fixed to the framing; the second layer is laminated to the first to achieve full thickness and a flat surface for finishing.
• Use a flexible jointing compound from the Compounds range for all joints on curved walls. Standard setting compounds are brittle and will crack if the substrate experiences any seasonal or structural movement.
• Wet the board lightly with a damp sponge or roller on the side that will be compressed (the inner face of a concave curve) — this softens the gypsum core and allows a tighter radius to be achieved without cracking the board.
• Frame the curve with a timber or steel form that matches the desired radius before installing the boards — do not try to flex boards directly onto studs set in a flat plane.

What is the minimum radius Gyprock Flexible can achieve?

Gyprock Flexible can achieve convex curves (curving outward) with a minimum radius of 250mm, and concave curves (curving inward) with a minimum radius of 450mm. For tighter radii, the board may need to be lightly wetted on the compression face to soften the core. Do not exceed the minimum radius without consulting CSR Gyprock installation guidance.

Why is Gyprock Flexible installed in two layers?

The first layer conforms to the curved frame and provides the structural base. The second layer is laminated over the first to achieve the combined thickness needed for a flat, gap-free surface that can be finished normally. Two layers also improve the surface stiffness and prevent the joints of the first layer from telegraphing through to the finished surface.

What jointing compound should I use on curved walls?

Always use a flexible jointing compound on curved plasterboard walls. Standard setting compounds are designed for flat surfaces and will crack if the substrate has any residual movement after installation. See the Compounds range for available flexible compound options.

Can Gyprock Flexible be used in wet areas?

No — Gyprock Flexible is not moisture resistant. Do not use it in bathrooms, shower recesses, or other wet areas. For curved walls in wet areas, specify Aquachek™ in the standard 10mm profile and create the curve with a radius framing system — Aquachek™ can flex slightly but is not designed for tight radius curves.

Can I get Gyprock Flexible delivered to Perth?

Yes — Aussie Plasterboard can supply Gyprock Flexible from our Osborne Park warehouse. Request a quote or call (08) 9244 4250 to confirm current stock.

Related Products

Full Plasterboard Range — The complete range of Gyprock plasterboard products stocked at Aussie Plasterboard Osborne Park.

Gyprock PLUS™ — Standard flat wall board for the same project; Flexible is used only where curves are required.

Compounds — Flexible jointing compounds for curved wall joints; standard compounds will crack.

Soundchek™ — Acoustic board; can be used as the second layer in curved acoustic partitions.

SUPACEIL™ — Ceiling board for the same project where curved feature walls meet flat ceilings.

Technical Specifications

Product Manufacture

Gyprock Flexible 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.