Hydraulic Cement Underlayment and Overlayment
Technical advice / Where to buy?
Sika® Level-01 Primer
Sika® Level-01 PrimerCA is a one-component, water-dispersed, solvent-free, acrylic-based solution used to prime and seal floor surfaces prior to the application of Sika® Level-125CA underlayments and Sikafloor® Level-25CA and Sikafloor® Level-50CA overlayments.
Use
As a primer/sealer for absorbent substrates including concrete and cement screeds. Particularly suitable as an adhesion promoter and surface sealer beneath Sika® Level-125CA, Sikafloor® Level-25CA and Sikafloor® Level-50CA, enhancing the bond and integrity of the underlayment/overlayment when applied onto porous substrates.
Characteristics and Advantages
- Ready to use, no dilution required.
- Water-based and solvent-free; user and environmentally friendly.
- Penetrates substrate to reduce outgassing and formation of bubbles in the underlayment/overlayment.
- Prevents water loss from the underlayment/overlayment into the substrate.
- Quick-drying and fast film formation to increase productivity.
- Achieves excellent bond values throughout the recommended range of application temperatures.
- Effectively seals concrete surfaces in a single, economic operation.
Colour
WhitePackaging
3.78 L (1 US gal.) jug (4/carton) and 18.9 L (5 US gal.) pail


Product Data Sheet
Sika Level-01 Primer CASafety Data Sheet
Sika Level-01 Primer CASika® Level-03 Primer CA
Sika® Level-03 PrimerCA is a one-component, water-dispersed and low solvent-containing, acrylic-based solution used to prime concrete and wood surfaces prior to the application of Sika® Level-125CA underlayments.
Use
As a multi-substrate primer on absorbent substrates, including concrete, cement screeds and suitable wooden subfloors. Sika® Level-03 PrimerCA is particularly effective as an adhesion promoter beneath Sika® Level underlayments, consolidating porous substrates and enhancing bond strengths.
Characteristics and Advantages
- Versatile primer, suitable for concrete and wood, so reducing number of materials on-site.
- Ready to use, no dilution or mixing required.
- Water-based and low solvent content; user and environmentally friendly.
- Pigmented to ensure coverage and indicate time to apply the underayments.
- Penetrates substrate to reduce outgassing and bubble formation in self-levelling underlayments.
- Provides consolidated substrates to promote bond of underlayments.
- Prevents water loss from the underlayment into the substrate.
- Quick-drying and fast film formation to increase productivity.
- Achieves excellent bond values throughout the recommended range of application temperatures.
- Very convenient where a single primer is required for differing surfaces.
Colour
Green tintPackaging
1 L (33.8 fl. oz) jug, 4/carton
4 L (1.05 US gal.) jug, 4/carton

Product Data Sheet
Sika Level-03 Primer CASafety Data Sheet
Sika Level-03 Primer CASika® Level-125 N
Polymer-Modified and Sika® ViscoCrete® Improved, Self-Levelling Cementitious Underlayment for Use at 1 to 38 mm (1/25 to 1 1/2 in) Thickness
Use
Interior floor levelling and smoothing applications in pedestrian areas, where floor coverings are to follow, such as:
- Institutional - schools, colleges, hospitals, clinics, libraries, galleries, museums.
- Commercial - offices, corridors, hallways, canteens, cafeterias, stores, hotels, restaurants.
- Residential - domestic properties, condominiums and high rise construction.
Characteristics and Advantages
- Easy and quick to install.
- Zero VOC content and low odour.
- Highly fluid and self-levelling.
- Manual or pumpable application.
- Feather-edging acceptable in pedestrian areas.
- Levels new and renovates old floors.
- Rapid drying, can be walked on after 8 hours at 23°C (73°F).
- Ceramic tiles and natural stone can be installed after 24 hours.
- Floor coverings (carpet, vinyl, PVC, rubber, engineered wood flooring) can be installed after 1 to 3 days.
- Suitable on floors with in-floor radiant heating.
- Excellent underlayment for tiles, sheet products and wood floor bonding systems.
Colour
Concrete GreyPackaging
22.7 kg (50 lb) bagProduct Data Sheet
Sika Level-125 CASafety Data Sheet
Sika Level-125 CASika® Level SkimCoat CA
Fast-Setting, Cement-Based Skim Mortar for Thin-Layer Repair and Re-Profiling Applications, for Use under Sika Level Underlayments and Other Floor Coverings.
Use
- Use to repair minor defects, holes and cracks in concrete and wood subfloors before installing underlayment or final covering.
- To pre-fill non-moving joints and seams in concrete and wooden substrates.
- To skim correctly-prepared tiles and stable, non bleeding adhesive residue.
- Used to re-profile rough substrates or subfloor surfaces from feather edge to 13 mm (1/2 in) prior to applying levellers or floor finishes.
Characteristics and Advantages
- Easy to prepare and quick to apply.
- May be feather-edged.
- Zero VOC content.
- Repairs new and renovates old floors.
- Good adhesion to substrates, subfloors and stable adhesive residue.
- Rapid setting: primers, levellers, adhesives and coverings can be applied without delay.
- Excellent standard of finish achievable: coverings can be applied directly over skim coat.
Colour
GreyPackaging
4.5 kg (10 lb) bag - 4/caseProduct Data Sheet
Sika Level SkimCoat CASafety Data Sheet
Sika Level SkimCoat CASikafloor® Level-25
Cementitious Self-Levelling Floor Screed.
Use
- Factories.
- Commercial buildings.
- Cellars.
- Corridors.
- Warehouses.
- Hospitals.
- Domestic.
- Fast track construction.
- Levelling pre-cast concrete slabs.
Characteristics and Advantages
- Self-levelling and highly fluid.
- Pumpable or manual application.
- Levels and renovates old floors.
- Rapid drying.
- 4 hour walk on time [23°C (73°F)].
- Excellent underlay for tiles, sheet systems and wood floor bonding systems.
- Excellent underlay for resin flooring.
- Low odour.
Colour
Concrete GreyPackaging
25 kg (55 lb) bag
Product Data Sheet
Sikafloor Level 25 CASafety Data Sheet
Sikafloor Level 25 CASikafloor® Level-50
Deep Section, Cementitious, Self-Levelling, Sub-Floor Screed.
Use
- Factories.
- Commercial buildings.
- Cellars.
- Corridors.
- Warehouses.
- Hospitals.
- Domestic.
- Fast track construction.
- Levelling pre-cast concrete slabs.
Characteristics and Advantages
- Self-smoothing and highly fluid.
- Levels and renovates old floors.
- Rapid drying.
- 6 hours walk on time [23°C (73°F)].
- Excellent underlay for tiles or sheet systems.
- Excellent underlay for resin flooring.
- Low odour.
Colour
Concrete GreyPackaging
25 kg (55 lb) bag