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2 component, low odour, rapid curing, high solids, hybrid polyurea primer used as a bonding agent on cementitious substrates for consistent and durable adhesion of Sikaroof, Sikalastic and Sikafloor Systems.
- Low odour application
- Fast curing - overcoating possible after 30 minutes
- Significantly reduces the likelihood of out-gassing from susceptible substrates
- Consolidates dusty or friable surfaces
- Easy application by roller or brush
- Can be filled with quartz sand and used as a scratch coat
- Versatile primer on cementitious substrates for use with:
- Sikalastic roofing systems
- Sikafloor balcony waterproofing systems
Sika Concrete Primer LO is a two component, low odour, rapid curing, high solids, hybrid polyurea primer that used as a bonding agent on cementitious substrates for consistent and durable adhesion of Sikaroof, Sikalastic and Sikafloor Systems.
Low odour version of Sika Concrete Primer.
Quick Links - Click To Jump To Section:
- Features & Benefits
- Product & Technical Data
- Application Details
- Application Conditions / Limitations
- Application Instructions
Features & Benefits
- Low odour application
- Significantly reduces the likelihood of outgassing from susceptible substrates
- Fast curing - overcoating possible after 30 minutes
- Helps to stabilise substrates
- Easy application by brush or roller
Product & Technical Data
Attribute | Information |
---|---|
Appearance / Colour | Colourless to pale yellow |
Packaging |
1 litre; 0.77 part A + 0.23 part B 4.5 litre; 3.48 part A + 1.02 part B 11.5 litre; 8.89 part A + 2.61 part B |
Storage Conditions / Shelf Life | 12 months from date of production. The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 0 °C and +25 °C. |
Chemical Base | Hybrid polyurea |
Density | ~1.05 kg/l |
Flash Point | Part A: > 61 °C |
Part B: > 61 °C |
Application Details
Substrate Quality
- The surface must be sound, of sufficient strength, clean, dry and free of dirt, oil, grease and other contamination
- The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum pull off strength of 1.5 N/mm²
Substrate Preparation
- All surfaces to be coated should be thoroughly cleaned by conventional means
- Inspect the substrate
- Spalling, flaking or damaged areas should be repaired using compatible materials to match surroundings or replaced as necessary
- If in doubt apply a test area first
- Tiles must be prepared mechanically; glazing must be removed
- Grinding may be necessary to level the surface
- For detailed information regarding substrate quality / preparation and primer chart please refer to the Product data Sheet
Application Conditions / Limitations
Attribute | Information |
---|---|
Substrate Temperature | 5°C min. / 30°C max |
Ambient Temperature | 5°C min. / 30°C max |
Substrate Moisture Content | < 6% pbw moisture content |
Test method: Sika ® -Tramex meter, < 4% CM | |
No rising moisture according to ASTM (Polyethylene sheet) | |
Dew Point | Beware of condensation! Surface temperature during application must be at least ≥3 °C above dew point |
Consumption |
Apply in one to two coats, with a consumption of ~0.15–0.2 kg/m²/coat depending upon surface roughness and absorption NOTE: These figures are theoretical and can be influenced due to surface porosity, surface profile, variations in level and wastage etc |
Application Instructions
Mixing
- Part A : Part B = 3.4 : 1 (by volume)
Application Method / Tools
- Prepare Sika Concrete Primer LO by mixing component A until uniform
- Add the component B into component A container and re-mix until homogeneous
- Sika Concrete Primer LO can be applied by short-piled roller or brush
- Allow primer to dry sufficiently (see waiting time / overcoating) before overcoating
Potlife
- Sika Concrete Primer LO is designed for fast curing
- High temperatures combined with high air humidity will increase the curing process
- Thus, mixed material in opened containers should be applied immediately
- In opened containers, the material will form a film after approx. 30 minutes
Waiting Time / Overcoating
At 20°C:
- Minimum waiting time: 30 minutes
- Apply an additional coat if more than 24 h pass before coating
- Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity
Notes on Application / Limitations
- Do not apply Sika Concrete Primer LO on substrates with rising moisture
- Do not use Sika Concrete Primer LO for indoor applications
- Protect freshly applied Sika Concrete Primer LO from damp, condensation and water for at least 24 hours
- Do not apply close to the air intake vent of a running air conditioning unit
- The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking (for further information please contact Sika technical service)
- If 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
- Allow new concrete to cure/hydrate for a minimum of 10 days prior to application, preferably 28 days
Data sheet
- Manufacturer
- Sika
- For Use By
- Professional Use
- Interior / Exterior Use
- Exterior Use
- For Use On
- Cement
Concrete
Balconies
Floors
Roofs - Application Method
- Brush
Roller - Single, Two or Three Pack
- Two-Pack
- Pack Size
- 1L
4.5L
11.5 litre - Mixing Ratio
- 3.4:1
- Dry to Recoat (at 20°C)
- 30 minutes
- Max. Application Temperature
- 30°C
- Min. Application Temperature
- 5°C
- Density
- ~1.05kg/L
- Shelf Life (from date of manufacture)
- 12 months
- UN Number
- N/A
- Consumption
- ~0.15–0.2kg/m² per coat
- Suitable For Use On
- Concrete
- Suitable For Use On
- Floors
- Suitable For Use On
- Cement
- Suitable For Use On
- Roof
- Suitable For Use On
- Balconies
- Application Method
- Brush
- Application Method
- Roller
- Manufacturer
- Sika
- Usages
- Quick Drying
- Usages
- Low Odour
- Product Usage Type
- Primer
- Product Type
- Polyurea
Questions
Question about the product
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Sika Concrete Primer LO is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT