Sika Concrete Primer

Sika4886
SIK4886

Sika Concrete Primer, a two component, rapid curing, high solids, solvent based polyurea primer that is used as a bonding agent on cementitious substrates for Sikafloor 405/406.

  • Significantly reduces the likelihood of outgassing from susceptible substrates
  • Seals and primes substrates enabling over-coating at a minimum of 30 minutes (under ideal conditions)
  • Long pot life
  • Helps to stabilise substrates
  • Can be used between coats to locally address pin-holing

Colour
Size
£102.76
£123.31 Incl. VAT
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

Description

Sika Concrete Primer is a two component, rapid curing, high solids, solvent based polyurea primer, used as a bonding agent on cementitious substrates for Sikafloor 405/406

Used as the primer for the Sika Balcony Fast Cure I system.



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Features & Benefits


  • Significantly reduces the likelihood of outgassing from susceptible substrates
  • Seals and primes substrates enabling over-coating at a minimum of 30 minutes (under ideal conditions)
  • Combines a rapid cure time with a long pot life
  • Helps to stabilise substrates
  • Easy application by brush or roller
  • Can be used between coats to locally address pin-holing



Product & Technical Data


Appearance / Colour Colourless to pale yellow
Packaging 11.5 litre (~ 11.78 kg) containers; 9l part A + 2.5l part B
Storage Conditions / Shelf Life 12 months from date of production if stored properly in original, unopened and undamaged sealed container in a cool, dry location away from direct sunlight
Chemical Base Two component solvent based polyurea
Density ~1.02 kg/l
Flash Point Part A: 40°C
Part B: 73°C



Application Details


Substrate Quality

Substrates should be free from laitance, dust, oil and grease achieved by wire brushing or mechanical preparation.

 

Substrate Preparation

Allow a minimum of 28 days before overcoating new concrete. The concrete should have a Pull off strength ≥1.5 N/mm 2 . Defects or damage to concrete decks must be made good using a proprietary polymer modified repair mortar. Any repairs should be allowed a minimum of 72 hours to cure and until such time as the moisture content has fallen to the permissible level.



Application Conditions / Limitations


Substrate Temperature 5°C min. / 30°C max.
Ambient Temperature 5°C min. / 30°C max.
Substrate Moisture Content Visible damp free (maximum 18% wood moisture equivalent).
< 6% pbw moisture content Test method: Sika ® -Tramex meter, < 4% CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene sheet).
Dew Point Beware of condensation! Surface temperature during application must be at least +5°C above dew point.
Consumption 1 or 2 coats with a consumption of ~0.130 kg/m 2 per coat depending upon surface roughness and absorption.



Application Instructions


Mixing

  • Part A : Part B = 78 : 22 ( by volume)
  • Part A : Part B = 82 : 18 ( by weight)

 

Application Method / Tools

Ensure surface is dry and free from dust and laitance. Previously primed areas must be free from contamination before re-priming or top coating. Product may be applied to damp surfaces but these must not be visibly wet (see substrate moisture content).

Prepare primer by mixing the base until uniform. Add the activator and re-mix until homogeneous.

Apply between 5 and 30°C. Air and substrate temperatures should remain a minimum of 5°C above dew point throughout the application and curing periods.

Apply by brush or roller.

Brush or roller. Use brushes for small areas only.

 

Potlife

  • 1 hour at 20°C
  • Note: Pot life will decrease at higher temperatures.

 

Waiting Time / Overcoating

At 20°C:

  • Dry to touch 10 minutes
  • Dry through 30 minutes
  • Apply an additional coat if more than 24 h pass before coating

Note: The product turns brown/yellow when kept exposed/unprotected by a coating

 

Cleaning of Tools

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

 

Notes on Application / Limitations

Do not apply in wet weather or to wet surfaces.

Product Details
Sika4886

Data sheet

Manufacturer
Sika
Interior / Exterior Use
Exterior
Water / Solvent Based
Thinner C
For Use On
Concrete
Application Method
Brush, Roller
Colour
Colourless to pale yellow
VOC Levels
See safety sheet
Single, Two or Three Pack
Two-pack
Pack Size
11.5 litre (~ 11.78 kg) containers; 9l part A + 2.5l part B
Dry to Recoat (at 20°C)
30 minutes
Pot Life (at 20°C)
1 hour at 20°C
Density
~1.02 kg/l
UN Number
UN1263
Attachments
Download


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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