Sika® Level-01 Primer Plus
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Sika® Level-01 Primer Plus is a one-part, water-dispersed and solvent-free, acrylic-based solution used to prime and seal floor surfaces prior to the application of Sika® Level products.
- Water-based and solvent-free
- Penetrates substrate to reduce outgassing and formation of bubbles in the underlayment
- Prevents water loss from the underlayment into the substrate
- 10 minutes on concrete
- Effectively seals concrete surfaces in a single, economic operation
- Low VOC and low odor
- Interior and exterior use
Usage
- For absorbent substrates
- Concrete and cement screeds.
- Suitable on OSB and plywood
- Particularly suitable as an adhesion promoter and surface sealer beneath Sika Level products, enhancing the bond and integrity of the underlayment when applied onto porous substrates.
Advantages
- Water-based and solvent-free
- Penetrates substrate to reduce outgassing and formation of bubbles in the underlayment
- Prevents water loss from the underlayment into the substrate
- 10 minutes on concrete
- Effectively seals concrete surfaces in a single, economic operation
- Low VOC and low odor
- Interior and exterior use
Packaging
1 gal. (3.8 L) jugs
Color
White liquid
Product Details
Shelf Life
12 months in original, unopened container. Protect from high heat and freezing; if frozen, discard
Storage Conditions
Store dry at 41–77 °F (5–25 °C), if frozen, discard.
Condition material should be 65–75 °F (18–24 °C) before using.
Density
62 lb./ft3
Solid content by mass
30 %
Application
Ambient Air Temperature
50–95 °F (10–35 °C)
Relative Air Humidity
Max 75 %
Substrate Temperature
50–95 °F (10–35 °C)
Cure Time
| Substrate | Dilution | Coat | Drying Time |
| Concrete and mortar | 1:3 | 1 | 10 min. |
| SikaLevel®-825 Lite over Gypsum Base | 1:3 | 1 | 10 min. |
| Extremely porous Concrete and mortar | 1:3 then 1:1 | 2 | 30 min. |
| OSB/Plywood | Undiluted | 1 | 2 hrs. |
| Cementitious over Gypsum Base | 1:1 | 1 | 16 hrs. |
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To ensure proper adhesion, Sika® Level products have to be applied within 24 hours of the application of the Sika® Level-01 Primer Plus, but only once the primer is clear (without milky spots) and tack-free.
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Lower temperatures and/or humid conditions may extend the drying time between priming coats or before installation of the underlayment.
Coverage
| Coverage per 1 gal. jug | |
| Undiluted | ~500 ft2 (46.5 m2) |
| 1:1 (primer:water) dilution | 600–700 ft2 (55.7–65 m2) |
| 1:3 (primer:water) dilution | 700–1,000 ft2 (65–92.9 m2) |
(Coverage figures do not include allowance for surface profile and porosity or material waste)
MIXING
- Before applying Sika® Level-01 Primer Plus, thoroughly shake the container in which the material is supplied in to agitate the contents and to ensure all solids are distributed throughout the dispersion and a uniform consistency is achieved.
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Mix with potable water (approx. 70 °F, 21.1 °C) into a suitable sized and clean mixing container. Mix for 1 minute with a low-speed drill (300 rpm) and a paint mixing paddle.
APPLICATION
- Apply with a stiff bristle, exploded tip push broom.
- Sika® does not recommend the use of paint rollers or spray equipment.
- When first applied, Sika® Level-01 Primer Plus appears white; once dry, it is clear. This facilitates quality control in terms of complete coverage and clearly confirms when the underlay can be installed
- Where temperatures exceed 86 °F (30 °C), refer to and follow ACI hot weather application and protection guidelines.
FAQ
Sika® offers high-quality products such as Sika® Level-325, a cementitious self-leveling underlayment, and Sika® Level SkimCoat, ideal for minor surface imperfections. For improved adhesion, Sika® Level-01 Primer Plus helps ensure a strong bond, while Sika® MB acts as a moisture barrier in high-humidity environments.
Failures often result from improper mixing, inadequate priming, excessive moisture, or application in extreme temperatures. Using Sika® Level-01 Primer Plus, following correct mixing ratios, and applying in recommended conditions (41–86°F) help prevent these issues.
No, they are not. For standard-size tile < 15”, the substrate flatness tolerance is no more than ¼” variance in 10”. For tile > 15”, the substrate flatness tolerance is no more than 1/8” variance in 10’. This applies to any substrate whether it is a wall, floor, ceiling etc.
No. Thinset is an adhesive, not a patching or leveling compound. Thinsets are
designed to be a certain thickness and when that thickness is greater than what the thinset can handle, shrinking will occur. Use a product that is designed for patching or leveling.
Almost all self-leveling underlayments require a primer. A primer helps with drying, flowability and bonding. Check with the manufacturer to see if the selected SLU needs a primer. For SikaLevel® SLUs, a primer is required for each pour.
Some old “cutback” black residues may contain asbestos. If the residue has asbestos, a professional will need to remove it. If the black residue does not contain asbestos, it may be removed by mechanical means such as sand blasting or grinding. Some products can encapsulate the black residue, preventing mechanical removal. Check Technical Services to find the correct products.
In most cases, flat is better than level. For example, an exterior deck needs to be flat and not level. Building codes require the deck to be pitched away from the building, which would make the deck not level. But, to install tile the deck must be flat. So, it all depends on the application.
When a flooring substrate does not meet industry flatness tolerances or when a substrate needs to be raised/lifted. Every self-leveling underlayment has a thickness threshold it can be used for. Speak with a SikaTile® Technical Representative for assistance.
No, they are not. For standard-size tile < 15”, the substrate flatness tolerance is no more than ¼” variance in 10”. For tile > 15”, the substrate flatness tolerance is no more than 1/8” variance in 10’. This applies to any substrate whether it is a wall, floor, ceiling etc.
No. Thinset is an adhesive, not a patching or leveling compound. Thinsets are
designed to be a certain thickness and when that thickness is greater than what the thinset can handle, shrinking will occur. Use a product that is designed for patching or leveling.
Almost all self-leveling underlayments require a primer. A primer helps with drying, flowability and bonding. Check with the manufacturer to see if the selected SLU needs a primer. For SikaLevel® SLUs, a primer is required for each pour.
Some old “cutback” black residues may contain asbestos. If the residue has asbestos, a professional will need to remove it. If the black residue does not contain asbestos, it may be removed by mechanical means such as sand blasting or grinding. Some products can encapsulate the black residue, preventing mechanical removal. Check Technical Services to find the correct products.
In most cases, flat is better than level. For example, an exterior deck needs to be flat and not level. Building codes require the deck to be pitched away from the building, which would make the deck not level. But, to install tile the deck must be flat. So, it all depends on the application.
When a flooring substrate does not meet industry flatness tolerances or when a substrate needs to be raised/lifted. Every self-leveling underlayment has a thickness threshold it can be used for. Speak with a SikaTile® Technical Representative for assistance.