Express, very strong and
guarantee exceptional durability! So
in a few words you can define Baumit Rapido 1 Speed - an instant cement floor that allows
you to quickly make all kinds of floor underlays, and can also be used as a
final floor layer. And if the priority is not extra speed and / or very high
strength, you can use other ready cement foundations from the Baumit offer,
which also significantly accelerate the implementation of works and guarantee
very good and stable properties.
Preparation of the
substrate
The method of preparing
the substrate depends on the construction system that we apply to the floor
underlay / floor being made. However, always the substrate must be sufficiently
strong and stable and free from loose fragments. It is necessary to ensure
proper separation (expansion joints) from walls and other elements (eg poles)
located in the room, arranging, for example, dilatation tape, special profiles
or using thin polystyrene foam strips.
Complex foundation
(bonded to the ground)
It is carried out
directly on a load-bearing structural foundation. The key is to ensure a permanent connection to the
ground through a primer or adhesion layer. All contamination and layers that
may weaken adhesion should be removed. Properly prepared, cleaned and vacuumed
substrate should be thoroughly primed with a suitable preparation.
Foundation not
associated with the substrate (on the separating layer)
The solution is used in
the case of substrates of poor quality (low strength, difficult to remove
impurities, eg oiling) and when it is difficult to ensure adequate adhesion. The
floor underlay is separated from the ground by, for example, PE foil with a
suitable thickness, e. g. 0. 2 mm .
On substrates exposed to moisture, separating layer may be moisture insulation.
Floating foundation on
insulation (thermal / acoustic) and underfloor heating
This primer is separated
from the substrate by a layer of insulation (EPS boards, extruded polystyrene
XPS or mineral wool, acoustic mats). In the case of this solution, it is
necessary to use specially designed (with appropriate hardness) boards made of
expanded polystyrene or wool and to ensure thorough insulation on the whole
surface. It allows to obtain the expected parameters of thermal and / or
acoustic insulation. In case when the floor underlay additionally fulfills the
function of space heating, the water (heating pipes) or electric installation
(wires or mats) installed therein is used.
Regardless of the
construction system, Baumit ready floor underlays can be used in any of the
solutions described above. They can be used not only inside but also outdoors. Additionally,
they are perfect for both dry and wet and wet places (eg swimming pools, baths,
industrial kitchens).
Minimum thickness when
using the Baumit Rapido 1 Speed light floor:
ground related primer: ≥ 10 mm (on tack coat)
primer on the separating
layer: ≥ 35 mm
underlay on thermal / acoustic
insulation: ≥ 40 mm
underfloor underfloor: ≥ 45 mm + d *
d * - thickness of
heating elements
Drying speed of Baumit
Rapido 1 Speed floor
Residual moisture
content over time, results were obtained at approx. 20oC and 65% humidity.
Before laying the
cladding, eg PVC, the parquet should be tested with humidity (CM method).
Execution of works
Laying dilatation
The substrate must be
load-bearing, hard, stable, dry and free from impurities that impair adhesion. It
is necessary to check the deviations of the substrate from the assumed level,
ie perform leveling using, for example, a leveler or a laser level. When
determining the upper level, take into account the recommended minimum
thickness of the undercoat as well as the thickness of all layers that will be
laid on it.
In addition to the
peripheral dilatations mentioned earlier (and the separation of the foundation,
among others from poles or stairs), it is also necessary to make expansion
joints between the rooms.
Note: perimeter
expansion joints must be of appropriate thickness (usually 1 cm, for example ). It should also be remembered to transfer (reconstruct) the structural
dilatation existing in the ground.
Proper care
The freshly laid
foundation should be protected against exposure to high temperatures, direct
sunlight, low air humidity and drafts. To ensure optimal binding and maturing
conditions, a freshly made surface is recommended to be protected from too
rapid drying by, for example, sprinkling with water and covering with foil. Uneven
binding and drying of the mortar can lead to scratches and delamination.
Priming
With complex layers,
thoroughly vacuum the substrate and prime with Baumit Grund or Baumit Super
Grund (depending on the absorbency of the substrate). Leave the primed surface
to dry. For thinner layers of primers, i. e. from 1 to 3 cm ,
the so-calledsludging the substrate using
Baumit Connect and laying the
primer on a fresh bonding layer ("wet on wet" method).
In the case of
foundations on the insulation, after preparing and leveling the substrate, a
thermal / acoustic insulation layer should be laid, followed by a construction
foil (minimum 10 cm overlap) with a curvature on the walls.
Laying the mortar
Laying the mortar
The floor foundation
should be laid on the ground immediately after preparation. The mortar should
be removed with a patch that is slid over pre-arranged guides (eg metal
direction strips). It should be ensured that the thickness of the undercoat in
any place is not less than that recommended for a given product and
construction system. For a better spreading and compacting of the undercoat,
you can apply a spin with a patch. After laying and leveling the foundation,
the guides should be removed, filled with mortar and smoothed / trowelled or
used with power trowels. With the planned finishing ceramic tiles, we can omit
the scuffing of the undercoat.
Preparation of the
mortar
Use clean water and
observe the recommended amount of mixing water! Adding more water than recommended
amountweakens the strength of the floor / undercoat, extends the drying time,
may cause the formation of "cement milk" on the surface and result in
increased shrinkage and cracking of the undercoat.
Ready underlay / Laying
carpets
Pedestrian traffic is
possible after a time depending on the underlay used. For Rapido 1 Speed after approx. 3 hours. Laying of
floor coverings can be started after a time depending on the type and thickness
of the foundation as well as temperature and humidity. If Rapido 1 Speed is used, the cladding can be laid
after 24 hours.
List of Baumit sleeper /
screed parameters
A wide range of
applications
Baumit cementitious
primers are perfectly suited for any finishing materials, eg ceramic tiles,
stone, carpet, PVC *, cork, panels and wooden floors, eg parquet.
(* - before laying PVC
thin-layer flooring, it is recommended to apply a smoothing layer to the
underlay, eg from Baumit Nivello 10 or Nivello Quattro).
The Baumit Rapido 1
Speed instant floor can be
successfully used also for large format and exotic parquet flooring, as well as
resin coatings and floors. Thanks to fast binding and drying, it is
irreplaceable also for quick renovations and places where short time of work is
important. Due to the high abrasion resistance Rapido 1 Speed can also be the final floor layer.
Cement screeds (screeds)
Baumit are also designed to form inheritances allowing for the formation of
ramps and leveling thresholds.
The products are
resistant to temperature changes, which allows them to be used in systems with
underfloor heating. In addition, they are frost-resistant and are ideal as
primers for use on terraces and balconies.
Contractors looking for
a proven and effective solution will probably also appreciate the fact that
Baumit primers are designed for both manual and machine placement. They can be
used in both residential and public buildings as well as warehouses and
industrial facilities.
