SikaLevel®-25 N

• Conforms to the requirements of EN 13813: CT-C40-F8-AR0,5
• Reaction to fire: Class A1_(fl)

Polymer modified hybrid binder

9 months from date of production

Store in original, unopened and undamaged packaging in dry conditions at temperatures between +5°C and +30°C.

4.8 to 5 litres of water for 25 kg of SikaLevel®-25 N

3 mm minimum / 25 mm maximum

+8°C min / +30°C max
Protect from direct sunlight, hot or strong winds and extremes of temperature to avoid cracking or crazing.

~ 80 % max

Beware of condensation! 
The substrate and uncured floor must be at least 3°C above dew point to reduce the risk of condensation, blooming or laitance on the floor finish.

+8°C min / +30°C max
Protect from direct sunlight, hot or strong winds and extremes of temperature to avoid cracking or crazing.

Test method: Sika-Tramex meter or CM measurement.
No rising moisture according to ASTM D 4263 (Polyethene sheet test).
< 4% CM if priming with Sikafloor®-150 Plus or Sikafloor®-151
Please consult the product data sheet for the primer used for further information.

Normal intended use of the floor
The one-part acrylic primer Sikafloor®-01 Primer is recommended for a pore-free surface with very good surface adhesion. Refer to the relevant PDS for the recommended application details, etc.

High loads intended use of the floor
Priming with epoxy resins like Sikafloor®-155WN, Sikafloor®-150 -151 or Sikafloor®-151 fully broadcasted with quartz sand 0.3–0.8 mm.

The temperature will affect the pot life.
Application at temperatures above +20°C will have reduced pot life and working time. Temperatures below +20°C will increase the pot life and working time.

Times are approximate be affected by changing substrate and ambient conditions, particularly temperature and relative humidity.
Make sure the moisture content has achieved the required value for the application of the coating product.

~ 1.7 kg/m²/mm

This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level or wastage etc.

• The concrete substrate must be sound and of sufficient compressive strength (> 25 N/mm2), with a minimum pull-off strength of 1.5 N/mm2.
• The surface must be clean, dry, and free of all contaminants, such as dirt, oils, grease, coatings, and surface treatments.
• If in doubt, apply a test area first. Weak concrete must be removed, and surface defects such as blow holes and voids must be fully exposed.
• Cement laitance, paints or other surface treatment agents must be removed entirely.
• Suitable methods for surface preparation are high-pressure water jetting or abrasive blast cleaning. Other pretreatments such as scarifying, milling, etc. must necessarily be followed by another post with a Jet/blast method to eliminate the remaining structural faults, to remove cement laitance and achieve an open and sound textured surface.
• An appropriate roughness of the substrate is a prerequisite for a good bond between the substrate and levelling screed. The mean surface roughness should be as large as possible, at least 1mm.
• Repairs to the substrate, filling of blowholes/voids must be carried out using appropriate products from the SikaTop®, Sika® MonoTop®, Sikafloor®, SikaDur® and Sikagard® range of materials.
• All dust, loose material, and friable material must be completely removed from all surfaces before the product is applied, preferably by brush and/or vacuum.
• Dewpoint: Beware of condensation! The substrate and uncured floor must be at least 3 °C above the dew point to reduce the risk of condensation, blooming or laitance on the floor finish.
• A suitable one part acrylic primer such as Sikafloor® - 01 Primer.
• Alternative: If the substrate is strong and has a sufficiently rough texture, SikaLevel®-25 N can be applied directly onto it. Dampen the substrate until it achieves an SSD (Saturated Substrate Dry) condition to avoid bubbles.
• High mechanical forces on the floor, a floor placed on soil or poor, weak substrates, must be primed with Sikafloor®-150 or Sikafloor®-151, fully broadcast with quartz sand 0.3 – 0.8 mm. Remarks: Quartz sand must not be applied in excess, and grains must not be fully sealed with the resin.
• Do not apply to substrates with rising moisture. If rising moisture can occur, an effective damp-proof membrane must be applied and in compliance with the relevant national standard.

• Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured surface. Weak concrete must be removed and surface defects such as blow holes and voids must be fully exposed. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum.
• If to be sealed with an impervious material, ensure that an effective damp proof membrane is in place before installation of SikaLevel®-25 N.
• Repairs to the substrate, filling of blowholes/voids must be carried out using appropriate products from the Sika Patch®, Sika Level®, Sikafloor® or Sikadur® range of materials.
• Prime the substrate using the appropriate primer, and if broadcasting quartz sand, ensure full blinding of the wet primer, without any bald spots. Remove any excess or loose sand from the surface when cured.
• Use primer according requirements - see system structure.
• For all the ancillary products, please refer to their relevant PDS.

Add the dry powder (25 kg SikaLevel®-25 N) into a mixing container with clean water.
The water amount must be between 4.8 - 5.0 L per 25 kg of material.

Mix thoroughly for a minimum of 3 minutes with a low-speed electric stirrer (300 - 400 rpm).

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.