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SikaEmaco® N 307

(former MEmaco N 307)

Single component polymer modified fairing coat and cosmetic mortar for concrete

SikaEmaco® N 307 is a single component acrylic polymer modified repair mortar for use as a "fairing coat" or cosmetic mortar.  When mixed with water, as directed, a fine grey trowellable mortar results which can readily be applied to fill in pores, blowholes and blemishes on a concrete surface. 
SikaEmaco® N 307 can be used as a 'skim' coat prior to the application of protective coatings. 
SikaEmaco® N 307 is specially formulated to produce a shrinkage compensating mortar with no cracking when applied in a thin section. Suitable for use in hot and tropical climatic conditions. 

  • Precision made, consistent results
  • Requires only the addition of mixing water
  • Shrinkage compensating
  • Excellent adhesion to concrete
  • Flexible
  • Smooth, easily produced finish
  • Low permeability
  • Excellent resistance to freeze / thaw action and carbonation
  • Reduces ingress of water borne salts, such as chlorides and atmospheric / chemical attack
  • Subsequent paint coats can be applied with greater economy.
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Usage

  • As a fairing or skim coat to cover and make good blemishes in concrete surfaces such as slight honeycombing, blowholes, defects caused by 'sand runs', patch repairs, shutter movement and grout loss.
  • Preparatory treatment to concrete to receive a thin film protective coating.
  • To produce a uniform surface over repaired area.
 

Advantages

  • Precision made, consistent results
  • Requires only the addition of mixing water
  • Shrinkage compensating
  • Excellent adhesion to concrete
  • Flexible
  • Smooth, easily produced finish
  • Low permeability
  • Excellent resistance to freeze / thaw action and carbonation
  • Reduces ingress of water borne salts, such as chlorides and atmospheric / chemical attack
  • Subsequent paint coats can be applied with greater economy.

Packaging

20 kg bags

Colour

Light Grey

Product Details

Product Information

Shelf life

12 months from date of production

Storage conditions

Store in original unopened packaging in cool and dry condition between +5 °C and +35 °C. Protect from direct sunlight, heat and moisture.

Density

~1.7 kg/l (25°C)

 
Technical Information

Tensile adhesion strength

~1.5 N/mm² 

(ASTM D4541)

Application

Application Information

Layer thickness

5 mm max.
Consumption

Consumption

One 20 kg bag will cover ~16 m2 when applied at 1 mm thickness.

This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

Yield

One 20 kg bag of SikaEmaco® N 307 will typically yield ~16 L of mortar
Application steps

APPLICATION INSTRUCTIONS

SURFACE PREPARATION

It is essential that the surfaces to be bonded are sound, clean and uncontaminated. All loose powdering material must be removed. 
Concrete surfaces should be thoroughly soaked prior to application of SikaEmaco® N 307, to ensure a saturated, but surface dry condition.

MIXING

SikaEmaco® N 307 is formulated to give an easily mixed material. For full bag quantities, it is preferable to mix the material in forced action mixer.  Alternatively, a slow speed, handheld electric mixer with a suitable paddle can be used. Overmixing should be avoided.  When mixing full bags, pour 3-4 litres water in the mixing vessel and commence mixing.  Add the powder to the water whilst mixing, add water as required to achieve the desired consistency.  No more than 7.5 litres of water per 20 kg of SikaEmaco® N 307 should be added. 

 

 

Void Filling: Deeper voids should be filled prior to the application of a cosmetic coating by reducing the amount of water added when mixing, to produce a trowellable putty like mortar. 

 

CURING TREATMENT

Good curing practice is essential even though SikaEmaco® N 307 is specially formulated to prevent shrinkage and cracking. Particular care is required in hot and windy conditions. 

Cure with a single coat of Sika® Antisol®-181 which is compatible with most subsequent protective coatings, or by covering the work with a properly secured plastic sheeting. 

CLEANING OF EQUIPMENT

Tools should be washed with water immediately after use. 

 

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