Solid Floor

The modern planning and design approach for public, commercial, manufacturing and even residential buildings requires maximum flexibility and maximum technical performance for every system involved in creating the areas they are made up of.

The SOLID FLOOR system is a raised screed that allows for a variety of different solutions with dry laying at a limited cost: it makes it easy to compensate for, or to create, variations in height on a floor, create underfloor system cavities, integrate heating and cooling systems and much more.

It is a quicker, cheaper replacement for any light screeds, raised floors with igloo, air chambers for the evacuation of Radon gas, etc.

Components: milled panels, various types of steel supports with high-density rubber seals, glue for the joints, profiles for trap doors.

The distinguishing feature of the system is the possibility to create continuous raised screeds, thanks to the original Knauf calcium sulphate panels, with tongue and groove edges, able to offer maximum performance in static, acoustic, resistance and fire protection terms. This surface is ideal for laying porcelain stoneware tiles of any size, using both cement adhesives and dry-laying solutions.


Mechanical resistance

The mechanical performance and durability of the system are guaranteed thanks to the high standards of production, the uniform quality of the materials and a compression process during the manufacturing of the panels that makes it possible to obtain a product with a density of more than 1500 kg/m3. SOLID FLOOR is available in a variety of thicknesses and sizes, in order to satisfy a full range of planning and design requirements. .

Easy to lay

At the production stage, the panels are milled along the edges for perfect assembly. A primer is also applied to protect them during transport and protect them from abrasion once laid on-site.

Acoustic performance and comfort

When combined with the appropriate accessories, the system allows for noise reduction of up to 29 db, making it suitable for most projects.

Fire resistance and reaction

This system is classified as A1 according to the UNI EN 13501-1 standard, since it is “nonflammable” and is classified as REI30 according to the Uni EN 13501-2 fire protection standard.

Flexibility and ease of inspection

The system comes complete with all the accessories necessary to install all components properly. Metal elements are also available to create trap doors for inspection in the same finish as the rest of the floor. It is also possible to install diving walls directly on top of SOLID FLOOR surfaces.

Surface finishes

Once Solid Floor has been correctly positioned, it has the appearance of a seamless, flat and rigid surface on which porcelain stoneware can be fitted in the desired layout.


If standard, cement-based adhesives for porcelain stoneware tiles are used, it is possible to fit slabs of any size and thickness on top of Solid Floor.
It is also possible to create any pattern, using tiles of different or identical sizes with aligned or staggered layouts, regardless of the structure and texture of the floor beneath.


The totally flat, rigid surface makes it ideal for self-laying porcelain stoneware tiles and slabs, without the need for adhesive. Also in this case, it is possible to work with any size and layout, thus maximising the efficiency, functionality and flexibility of systems that are designed to be fitted without the use of adhesives and cement-based grouts. Floor tiles can be removed at any time, allowing the floor to be re-fitted without the need for masonry.

Special systems


Milled panels can be integrated into the raised calcium sulphate screed to house underfloor heating and cooling systems. The system uses two layers of panels; the top panels are milled specifically for each application. Once the systems have been laid, the milled edges can be sealed as the chosen finish is being laid.
This system is a prime example of how building techniques and utility systems can be integrated, so as to simplify construction site management, boost energy efficiency and improve living area comfort.


Where floors have to be laid fast, the solution is SOLID FLOOR panels with pre-assembled stoneware slabs. The system involves extremely precise gluing of stoneware slabs in the same shape and size of the calcium sulphate panel, but with the sides that lie slightly inside the milled edges, so as to leave a minimum joint between the stoneware slabs once the panels have been assembled. This joint can then be sealed with traditional grouting, for a surface with a unique end result. A system of this kind is ideal to reduce construction site operations to a minimum and to obtain a raised floor with closed joints, suitable for any setting, from private homes to medical facilities, offices, factories, craft workshops and industrial kitchens.