For decades, the central drain dominated the shower area: four screed slopes converging toward a single point, diagonally cut tiles, and a complex installation geometry that required great precision to avoid stagnant water. The linear drainage channel has radically changed this logic. With a drain positioned along a wall or at the shower’s entrance edge, the screed slopes in only one direction; the slope is unidirectional, and tile installation—especially with large-format tiles—becomes much simpler and more precise. This technical feature has made the channel the benchmark drain for walk-in showers, not only for its aesthetic appeal but for the construction logic it entails. However, designing a shower with a linear channel means addressing a series of technical decisions that cannot be postponed: the position of the drain, the level of the screed, and compatibility with the existing plumbing system. These are choices that must be defined before installation, because modifying them during construction carries a high cost in terms of time and labor.
Which model to choose: aesthetics and function as design criteria
Minuta Profili shower channels are all made of stainless steel, with a DN 50 mm horizontal drain and K3 load class certification, which guarantees resistance of up to 300 kg. What distinguishes them is their aesthetic result and water flow capacity, two variables that depend on the type of shower and the overall project.
The Minimal Channel has a low-profile design with ultra-thin edges that integrate into the floor with maximum discretion. The grate features a reversible system that allows you to choose between the visible stainless steel version and the tileable one, with the same floor tile inserted into the grate for near-total visual continuity with the surrounding surface. It is the natural choice for bathrooms with a rigorous aesthetic, where every element must earn its place with sobriety.
The Tileable Channel takes visual continuity to its most extreme level: the grate disappears under the same ceramic as the floor, making the drain practically invisible to the naked eye. It is the most requested model for projects where the shower area must blend with the rest of the bathroom without interruptions, from large-format coverings to continuous stone or concrete-effect stoneware surfaces.
The Plus Channel is the high-performance model of the range: it guarantees a flow rate of up to 48 liters per minute, the highest in the line, while maintaining the same low profile as the other models. The grate offers a double aesthetic result, with interchangeable tileable and visible steel sides, making it suitable both for projects where visual continuity is a priority and for those where the drain is intended as a recognizable design element. It is the most suitable choice for generous showers, contract environments, and all contexts where water flow capacity is a critical parameter.
How to install it: the technical variables that determine the success of the project
Installing a linear channel requires precise planning that involves the plumber and the tiler even before the construction site begins. The first parameter to check is the position of the existing drain: the channel connects to the drain pipe through a horizontal tube that must have a minimum slope of 1% toward the drain to ensure proper water runoff. If the existing drain is already centrally located and cannot be moved, this must be evaluated before choosing the linear channel as a solution.
The position of the channel in the shower is not just an aesthetic choice: it determines the direction of the screed slope and the installation geometry of the covering. The most common solution in contemporary walk-in showers is the channel installed against the back wall or at the entrance edge, which leaves the shower area completely free and allows for a single, clean slope toward one side. The correct screed slope is between 1% and 2%: enough to guide the water toward the channel without creating a perceptible height difference underfoot.
Waterproofing is the technical step that allows for no approximations. Before tiling, the entire shower area must be treated with a certified waterproofing system, with particular attention to the joints between the channel and the floor and the corners between the floor and the wall, which are statistically the points most vulnerable to infiltration. Once the tiling is complete, the joint between the edge of the channel and the ceramic must be sealed with an elastic sealant, which allows for differential movement between the two materials without creating cracks over time. Throughout the installation phase, it is important to protect the channel from debris and residue: a channel clogged with lime or cement before even being used is one of the most common and least simple problems to resolve once the work is finished.
A well-chosen channel lasts as long as the shower that houses it
The linear drainage channel is one of those components that, when chosen well and installed correctly, becomes invisible in the most positive sense of the term: it does its job, resists daily humidity, and maintains its aesthetic result over time. Minuta Profili's stainless steel channels are designed to meet this logic: a material that does not suffer from the corrosion of the shower environment, a construction that guarantees adequate flow and resistance, and a grate that adapts to the character of the project. Choosing the right channel, in the right position, with the right screed preparation, is the most effective way to ensure a walk-in shower has the durability and quality it deserves.
