UniSlope is a complete wet room floor system that combines a pre-formed gradient board, a Unidrain drain and a compatible waterproofing membrane in a single package.

The key advantage over purchasing a drain separately is that all components are designed to work together. Rather than creating falls on site and coordinating products from multiple manufacturers, installers receive a fully engineered system with the correct gradient already built into the floor element.

The pre-formed gradient removes the need to form falls using screed on site, reducing installation time and avoiding delays associated with screed curing. Factory-manufactured falls also provide greater consistency than site-formed gradients, helping to minimise the risk of drainage issues caused by inaccurate floor falls.

The integrated design also simplifies waterproofing around the drain area and reduces the potential for compatibility issues between products from different manufacturers. For architects, specifiers and contractors, this provides a single-system solution with clear responsibility for performance and warranty coverage.

UniSlope kits are backed by a 10-year system guarantee, giving confidence that drainage, waterproofing and floor construction have been designed to work together as a complete wet room solution.

The UniSlope range includes four configurations, each designed around a different drain position and floor fall arrangement. Every UniSlope kit includes a pre-formed gradient board, a Unidrain drain and a compatible waterproofing membrane, all backed by a 10-year system guarantee.

The difference between the models is how water is directed towards the drain and where the drain is positioned within the wet room.

• UniSlope 1K – Features a single-direction fall towards a wall-mounted linear drain. This configuration is particularly popular in contemporary wet rooms, as it allows large-format tiles to be laid without complex cuts around the drain and keeps the drainage channel outside the main showering area.
• UniSlope 2K – Uses a three-direction fall towards a corner-positioned drain. It is well suited to layouts where a wall-mounted drain is not practical or where corner drainage provides the most efficient solution.
• UniSlope 3K – Incorporates a free-placement linear drain that can be positioned almost anywhere within the floor. This provides greater design flexibility and can be particularly useful where joist layouts, structural constraints or drainage runs limit drain positioning options.
• UniSlope 4K – Features a four-direction fall towards a centrally positioned linear drain. This configuration is typically used where a central drainage position is preferred for design or installation reasons.

All four UniSlope systems are available in a range of sizes and drain finishes, and can be installed on both timber and concrete subfloors.

The Unidrain linear drain used within the UniSlope system carries BBA (British Board of Agrément) certification, providing independent assessment of its suitability for use within UK construction projects. The drainage system has also been tested to BS EN 1253, the recognised standard for floor drains, with performance testing carried out by the University of Dublin, providing additional independent validation of its performance.

For wet room installations, compliance with Building Regulations typically centres on two key areas: effective drainage and protection against moisture ingress. In England and Wales, these requirements are covered principally by Part H (Drainage and Waste Disposal) and Part C (Site Preparation and Resistance to Contaminants and Moisture).

The UniSlope system has been designed as an integrated wet room solution, combining drainage, pre-formed falls and waterproofing components that work together to support compliance with these requirements when installed in accordance with the manufacturer's instructions.

For architects, specifiers and contractors, the use of independently assessed drainage components can provide additional confidence when specifying wet room systems and preparing project documentation.

All UniSlope kits are backed by a 10-year system guarantee, providing reassurance on long-term performance when installed correctly

Yes. UniSlope kits are compatible with both timber and concrete subfloors, making them suitable for a wide range of residential and commercial wet room projects.

For contractors and specifiers, this simplifies product selection, as the same UniSlope system can be used across different construction types without the need to specify different systems depending on subfloor type.

Installation is largely the same regardless of subfloor type. On timber floors, the UniSlope board is installed directly onto the prepared subfloor. On concrete floors, a 2mm layer of wet room adhesive should be applied beneath the board before installation to provide a stable and level base. Mechanical fixings are also recommended on concrete substrates to provide additional security, although they may not be required in every installation depending on the project and substrate conditions.

As with any wet room installation, the substrate must be structurally sound and suitable for the intended load. On timber floors in particular, adequate joist depth and floor rigidity are important to minimise movement and support long-term waterproofing performance.

Where joist layouts or structural constraints limit drain positioning options, the UniSlope 3K configuration can provide additional flexibility, allowing the linear drain to be located around structural obstacles without compromising the overall design.

All UniSlope systems are backed by a 10-year guarantee when installed in accordance with the manufacturer's instructions.

The Unidrain drain supplied with every UniSlope kit is available in a range of finishes, covering everything from understated stainless steel to fully tiled invisible drains. This allows the drainage element to be specified to match the wider bathroom design rather than being treated as a purely functional afterthought.

Finishes fall into three broad categories:

ClassicLine – The original Unidrain grate design, available in brushed stainless steel in several pattern variations. A practical and widely specified option that suits both contemporary and traditional interiors.

HighLine – A panel-style drain that replaces the traditional grate with a brushed steel panel, creating a cleaner, more minimal aesthetic. The HighLine range also includes HighLine Custom, where a cut tile matching the surrounding floor is inset into the drain to create an almost invisible finish - particularly popular on high-end residential and hospitality projects.

HighLine Colour – An extension of the HighLine range with finishes in black, brass, copper and polished stainless steel. These finishes are created using a PVD (Physical Vapour Deposition) coating - a highly durable surface treatment widely used in demanding architectural and commercial environments. PVD provides excellent resistance to wear, corrosion and fading, making it particularly well suited to wet room applications where the drain is regularly exposed to water, cleaning products and everyday use. The coloured finishes are designed to coordinate with brassware and bathroom accessories throughout the space.

The number of finish options available varies across the 1K, 2K, 3K and 4K configurations, so it is worth checking individual product pages for the full options applicable to a specific kit.