Description
Geberit – SIGMA8 Toilet In Wall Cistern
The Geberit SIGMA8 Toilet In Wall Cistern is a premium solution for modern bathrooms where design, functionality, and space-saving are top priorities. Known for its innovation and durability, Geberit offers concealed flushing systems trusted by professionals and homeowners across Australia.
Available at Builders Warehouse Online, this in-wall cistern delivers reliable performance, sleek aesthetics, and long-term value. Designed to integrate seamlessly into tiled or plastered walls, it allows for a clean and minimalist bathroom finish without sacrificing performance.
With a compact profile, the SIGMA8 is ideal for tight spaces or slimline installations. Whether you’re upgrading a powder room or building a new designer bathroom, this model provides excellent flexibility for wall-hung or back-to-wall toilet pans.
Installation is straightforward, supported by Geberit’s precision engineering and universal compatibility with Sigma flush plates. The water-saving dual-flush system (3L/4.5L or adjustable) reduces water consumption without compromising flush power, making it a sustainable choice for eco-conscious households.
Geberit SIGMA8 Toilet In Wall Cistern – Trusted Performance and Modern Design
Engineered in Switzerland, Geberit’s concealed systems are known for quiet operation, durability, and leak protection. The SIGMA8 In Wall Cistern features a robust tank construction, backed by Geberit’s
- 15-Year Warranty:This applies to concealed cistern tanks and frames.10-Year Warranty:This covers Monolith installation frames and all other Geberit concealed cistern tanks.3-Year Warranty:This covers inlet and outlet valve products, and mechanical flush/access plates.25-Year Spare Parts:Geberit ensures spare parts availability for 25 years for concealed cisterns.
This unit is compatible with a wide range of flush plates, giving you customisation options to match your bathroom aesthetic. From matte black to brushed nickel or chrome, Geberit plates provide design freedom and modern appeal.
It’s built for easy servicing too. The access panel is located behind the flush plate, allowing maintenance without opening the wall—perfect for both home and commercial bathrooms.
Explore our flush plate collection to customise your Geberit system.
This in wall cistern is built for solid wall or drywall installations and includes all mounting and fixing hardware. With water inlet options from the top, rear, or side, it’s designed for flexible plumbing arrangements—whether you’re renovating or starting from scratch.
The steel frame includes adjustable legs and a powder-coated finish, adding stability and corrosion resistance. This makes it perfect for long-term installations behind tiles, marble, or rendered surfaces.
Designed to comply with Australian standards and WaterMark certification, the SIGMA8 is a trusted choice for both residential and commercial bathrooms across Australia.
Why Choose an In Wall or Concealed Cistern?
Opting for a concealed cistern delivers two major benefits: space and style. An in wall cistern hides the bulky tank behind the wall, creating a more open and modern look—especially when paired with a wall-hung toilet.
By reducing visible components, it also makes the bathroom easier to clean, with fewer edges or crevices for dust and bacteria to build up. Geberit’s reputation for quiet, powerful flushing systems ensures you get minimalist design without sacrificing performance.
Need help selecting a toilet pan? Explore our toilet suite collection.
The Geberit SIGMA8 In Wall Cistern is the smart choice for a clean, contemporary bathroom. Its ultra-slim design, high-efficiency flush system, and durable concealed tank make it ideal for anyone upgrading their home or specifying commercial bathrooms.
Order yours today from Builders Warehouse Online and enjoy fast delivery, expert advice, and Australia-wide support. Experience the comfort and quality of Swiss engineering—hidden in plain sight.
The Geberit Sigma8 Concealed Cistern is designed for use with a floor mounted back to wall pan and fits within a standard 90mm wall cavity. The cistern is designed in Switzerland and made in Germany from a single piece of blow moulded HDPE making it permanently leak proof.
