Sikafloor 151 is a two part, low viscosity, multipurpose, epoxy resin which can be used as an epoxy primer, levelling mortar and mortar screed.

Sikafloor®-151 may only be used by experienced professionals.

Sikafloor 151 can be used for priming concrete substrates, cement screeds and epoxy mortars. It is ideal for low to medium absorbent substrates. It can also be used as a binder for levelling mortars and mortar screeds.

Please Note: The 435kg and 1200KG pack sizes are available as a special order item only with an extended lead time. Please contact our Sales Department on 0113 2455450 (option 1) or send a message to [email protected] for details

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• Features & Benefits
• Product Information
• Surface Preparation
• Application
• Limitations
• Health And Safety

Features & Benefits

• Two part, low viscosity, multipurpose, epoxy resin.
• Can be used as an epoxy primer, levelling mortar and mortar screed.
• For low to medium absorbent substrates.
• Primer for the Sikafloor®-263 SL N and Sikafloor®- 264 N flooring systems.
• Binder for levelling mortars and mortar screeds.
• Low viscosity.
• Good penetration.
• Good bond strength.
• Easy application.
• Short waiting times.
• Multi-purpose.

Product Information

Shelf Life: 24 months from date of production.

Storage Conditions: The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5°C and +30°C. Always refer to packaging.

Chemical Base: Epoxy.

Density: 1.47 kg/l.

Solids By Volume: 100%.

Mixing Ratio: Part A : Part B = 85 : 15 (by weight).

Pot Life: 25 minutes.

Surface Preparation

• Cementitious substrates (concrete / screed) must be structurally sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum tensile strength of 1,5 N/mm².
• Substrates must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
• Cementitious substrates must be prepared mechanically using suitable abrasive blast cleaning or planing / scarifying equipment to remove cement laitance and achieve an open textured gripping surface profile suitable for the product thickness.
• High spots can be removed by grinding.
• Weak cementitious substrates must be removed and surface defects such as blow holes and voids must be fully exposed.
• Repairs to the substrate, filling of cracks, blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor®, Sikadur® and Sikagard® range of materials. Products must be cured before applying Sikafloor®-151.
• All dust, loose and friable material must be completely removed from all surfaces before application of the product and associated system products, preferably by vacuum extraction equipment.

Mixing

• Prior to mixing all parts, mix separately part A (resin) using a low speed single paddle electric stirrer (300–400 rpm).
• Add part B (hardener) to part A and mix part A + B continuously for 3 minutes until a uniform mix has been achieved. When parts A and B have been mixed.
• Using a double paddle (axis) electric stirrer (>700 W), pan type revolving or forced action mixer or other suitable equipment (free fall mixers must not be used).
• If required, gradually add the appropriate granulometry of dried quartz sand and if required Extender T.
• Mix for a further 2 minutes until a uniform mix has been achieved.
• To ensure thorough mixing pour materials into another container and mix again to achieve a smooth consistent mix.
• Excessive mixing must be avoided to minimise air entrainment.
• During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing.
• Mix full units only. Mixing time for A+B+quartz sand = 5 minutes.

Application

• Strictly follow application procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
• Prior to application, confirm substrate moisture content, relative air humidity, dew point, substrate, air and product temperatures. If moisture content > 4 % parts by weight, Sikafloor® EpoCem® may be applied as a Temporary Moisture Barrier (T.M.B.) system.

Primer

• Pour mixed Sikafloor®-151 onto the prepared substrate and apply by brush, roller or squeegee then back roller in two directions at right angles to each other.
• Ensure a continuous, pore free coat covers the substrate. If necessary, apply two priming coats. Confirm primer waiting/overcoating time has been achieved before applying subsequent products. Refer to individual primer Product Data Sheet.

Levelling Mortar

• Apply the levelling mortar by squeegee/trowel to the required thickness.

Intermediate Layer

• Pour mixed Sikafloor®-151 onto the prepared substrate and spread evenly using a serrated trowel to the required thickness.
• Roll immediately in two directions at right angles to each other with a spiked roller to ensure even thickness and if required broadcast with quartz sand.
• Broadcast between ≥ 15 minutes minimum, ≤ 30 minutes maximum (at +20°C), lightly at first and then to excess.

Bonding Bridge

• Pour mixed Sikafloor®-151 onto the prepared substrate and apply by brush, roller or squeegee.
• For epoxy screed, back roller in two directions at right angles to each other.
• Ensure a continuous, pore free coat covers the substrate.
• If necessary, apply two priming coats.

Epoxy Screed/Repair Mortar

• Apply the repair or screed mortar onto the “tacky” bonding bridge.
• For the screed, use levelling battens and screed rails as necessary.
• After a short waiting time, compact and smoothen the mortar with a trowel.
• For the screed, a teflon coated power float (~20–90 rpm) is recommended.

Cleaning Of Tools

• Clean all tools and application equipment with Thinner C immediately after use.
• Hardened material can only be removed mechanically.

Limitations

• After application, Sikafloor®-151 must be protected from damp, condensation and direct water contact (rain) for 24 hours.
• If temporary heating is required, do not use gas, oil, paraffin or other fossil fuel heaters, these produce large quantities of both CO² and H²O water vapour, which may adversely affect the finish. For heating use only electric powered warm air blower systems.
• Discard any material over the pot life recommendations.
• Do not apply on substrates with rising moisture.
• Sikafloor®-151 mortar screed is not suitable for frequent or permanent contact with water unless sealed.
• Pre-trials must be carried out for mortar mixes to assess suitable aggregate grain size distribution.
• For external applications, apply on a falling temperature. If applied during rising temperatures “pin holing” may occur from rising air. These pinholes can be closed after light grinding by applying a scratch coat of Sikafloor®-151 mixed with ~3 % of Sika® Extender T.

Health And Safety

Further information about hazardous influences and protection are detailed in individual health and safety data sheets.

Please contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.

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