Sikafloor® Level-25

Use a conventional floor screed dual stage mixer and pump and control the water dosage to achieve a flowable consistency [4.25 L (1.12 US gal) per 25 kg (55 lb)]. After pumping onto the pre-primed surface, spread by trowel or pin screed rake to the required thickness. Thoroughly spike roll in two directions (90°) to remove trowel marks and any entrapped air.

Careful consideration should be given to the selection of the method of mechanical surface preparation and the timing of application of the primer and underlayment. Immediately following mechanical preparation on some excessively porous substrates, outgassing will increase for a short period of time (approx. 48 hours) until an equilibrium in the slab vapour pressure and the ambient environment is reached. Before overall installation begins, Sika Canada recommends the application of several small test patches to determine primer application requirements and acceptability of final product performance. In general, a one-coat application of the Sika® Level-01 PrimerCA should be sufficient. However, allowance should be made for double priming on excessively porous substrates. Where multiple coats are required, do not apply excessive material.

Tensile strength must be a minimum of 1.5 MPa (218 psi) at the time of application of Sika® Level-01 PrimerCA primer

Prepare concrete- and cement-based substrates by mechanical means, such as shot blasting, sandblasting, water-jetting, scarifying, or other appropriate methods, to achieve an open-textured, fine-gripping surface profile (ICRI / CSP 4 minimum). Weak concrete should be removed and surface defects such as blowholes and spalls fully exposed and repaired with a suitable Sika mortar prior to priming and levelling. All cracks and holes should be similarly filled to prevent seepage of the primer through to lower areas. Consult Sika Canada for recommendations.

Pour the mixed material onto the pre-primed surface and spread by trowel or pin screed rake to the required thickness. Thoroughly spike roll in two directions (90°) to remove trowel marks and any entrapped air.

The compressive strength of the concrete substrate should be at least 25 MPa (> 3625 psi) at 28 days.

Add 4.25 L (1.12 US gal.) of potable water to a suitably sized mixing container and while mixing slowly add the powder (25 kg/55 lb). Once all the powder has been added continue mixing with a low-speed electric mixer (300 - 400 rpm) for a minimum of three (3) minutes until a uniform mix has been achieved. Let material stand until most air bubbles have dispersed.

The substrate must be dry, clean, and stable before priming and applying the self-levelling screed material. Remove all existing treatments such as coatings, sealers, wax, latex compounds, impregnations and curing agents, together with all contaminants i.e., dirt, dust, laitance, grease, oils, and foreign matter, which will interfere with the penetration of Sika® Level-01 PrimerCA and the adhesion of Sikafloor® Level-25CA.

For foot traffic : 4 h
For Lightly serviceable : 1 day
For Fully serviceable 2 days
In addition, low temperatures extend the drying time.

Water-based materials: 8 h
Solvent-free materials: 24 h
Solvent-based materials: 36 h

With a thickness of 25 mm (1 in), the working time is 20 min.
Temperature variations will affect working time.

4.25 L (1.12 US gal) of water per 25 kg (55 lb) bag.

Approximately 14 L (3.7 US gal) (0.5 ft3) per bag.

The minimum temperature is +10 °C (50 °F), while the maximum temperature is +25 °C (77 °F) .

For best results, condition the product to +18 °C to +29 °C (65 °F to 84 °F) prior to mixing and installation. Lower temperatures may result in slower strength development and longer cure times.

No, Sikafloor® Level-25CA is only applicable for indoor use.

Not suitable for slopes or inclines > 0.5 %

Sikafloor® Level-25CA allows excellent underlay for tiles, sheet systems, wood floor bonding systems and underlay for resin flooring.

Sikafloor® Level-25CA is pumpable and can be applied manually.

Typical application thickness 5 mm - 25 mm (3/16 in - 1 in).