Sika Sikafloor 131 Level Latex Ultra

Sika Sikafloor®-131 Level Latex Ultra is a high performance, latex modified, cement based, self levelling compound for floor smoothing and levelling uneven rigid internal floors.

Best Uses

Sika Sikafloor 131 Level Latex Ultra is also suitable for exterior applications such as sheltered balconies and walkways, prior to laying ceramic tiles, slabs and natural stone. Sikafloor®-131 Level Latex Ultra can be overlaid with common floor coverings or left as a final wearing surface.

Best Uses

Sika Sikafloor 131 Level Latex Ultra is ideal for levelling floating floors, floors with underfloor heating, sand/cement screeds (not anhydrite), concrete slabs and pre-cast elements. Alos ideal for levelling existing ceramic and rigid plastic tiles.

• Fast setting, foot trafficable within 2 hours, can be tiled within 3 hours
• Interior & exterior use
• Can withstand vehicular traffic
• Final wearing coat, overpaintable
• Water and frost resistant
• Application depth 2-10 mm

Application

SUBSTRATE QUALITY / PRE-TREATMENT
Wet or humid rooms, such as bathrooms: Sikafloor®-131 Level Latex Ultra should be covered with a damp proofing membrane such as SikaBond® Rapid DPM. Switch off any underfloor heating systems 24 hours before, and until 24 hours after, application. Ensure floor temperature is >5 °C.  Holes/cavities: use a suitable cement based repair mortar and allow to fully cure. Ensure that all joints and cavities in the substrate are protected to prevent leakage. Concrete/screed should be at least 28 days old. The surface must be clean, dry, structurally sound and possess an effective damp proof membrane, such as Sika-Bond® Rapid DPM. The surface should be free from residual adhesives, dampproof membranes, bitumen-based materials, oil, grease, wax, loose flaky paint, dust, laitance, etc. that could reduce adhesion.

PRIMING

• Normal Absorbent Concrete/Screed - These substrates do not normally require priming. Damp down floor with clean water without leaving puddles, and allow to surface dry. If water is absorbed immediately into substrate, treat as porous surface.
• Porous Concrete/Screed - Seal surface with SikaBond® PVA+ (1 part PVA to 4 parts clean water) internally, or SikaBond® SBR (1 part SBR to 3 parts clean water) externally, ensuring surface is well coated, then allow to dry. For highly porous substrates it may be necessary to apply more than one coat to prevent pinholes and cracking/debonding of Sikafloor®-131 Level Latex Ultra.
• Non Porous/Dense Substrates (quarry/ceramic tiles, terrazzo and smooth concrete etc) - Mechanically roughen surfaces by grinding or scarifying to provide a mechanical key. Alternatively, apply a bonding coat of undiluted Sika-Bond® PVA+ (or SBR if used externally) and allow to become tacky before applying levelling compound.

APPLICATION
25 kg of Sikafloor®-131 Level Latex Ultra will require 5 L of water. DO NOT USE EXCESS WATER. Always add the powder to water. This should be carried out by stepwise addition whilst stirring until a free flowing creamy compound is produced. Pour the mixture out onto the prepared floor and allow it to find its own level. Trowel down lightly to achieve an overall thickness not exceeding 10 mm. For depths above 10 mm (up to 25 mm) add 1 part of clean, dry sharp sand to 1 part Sikafloor ®-131 Level Latex Ultra. The sand should be added after mixing powder with water. It is advisable to
reduce the amount of mixing water before adding sand, then top up with water to achieve the correct consistency.

Note: the flow characteristics will be affected by addition of the sand. Allow 3 days cure prior to subjecting to vehicular traffic @20 °C, longer at lower temperatures.