| Sika® Primer MB is a 2-component epoxy primer and moisture barrier for SikaBond wood flooring adhesives applied on difficult substrates. - 2-Component
- Reactive epoxy
- Solvent-free
- Easy to apply, low viscosity
- Allows quick completion
- Good penetration and stabilization of the substrate
- Suitable for refurbishing existing substrates
- Suitable for use with underfloor heating
|
Usage Sika® Primer MB is designed for use in conjunction with SikaBond wood flooring adhesives: - For moisture control on cement-based substrates with moisture contents of up to 6 % CM (carbide meter).
- For substrate consolidation on concrete, cement and anhydrite screeds and refurbished substrates.
- For adhesion promotion for broadcast mastic asphalt and on old adhesive residues.
Advantages - 2-Component
- Reactive epoxy
- Solvent-free
- Easy to apply, low viscosity
- Allows quick completion
- Good penetration and stabilization of the substrate
- Suitable for refurbishing existing substrates
- Suitable for use with underfloor heating
Packaging | Component A+B | 5 kg metal pail | | Component A+B | 10 kg metal pail |
|
Technical Information Compressive Strength ~70 N/mm2 (after 7 d) | (EN 196 part 1) |
Thermal Resistance Sika® Primer MB can be permanently exposed to dry heat ≤ +50 °C and temporarily exposed to dry heat ≤ +80 °C. Note: In order to avoid damage to the installed wood floor elements, surface temperature must not exceed +25 °C.
Service Temperature −40 °C min. / +70 °C max.
|
Application Information Mixing Ratio Component A : Component B = 100:37 (by volume) Ambient Air Temperature +10 °C min. / +30 °C max., min. 3 °C above dew point temperature Relative Air Humidity < 80 % Substrate Temperature During laying and until Sika® Primer MB has fully cured, the substrate and ambient temperatures shall be between +10 °C and +30 °C without and between +20 °C and +30 °C with underfloor heating. Substrate Moisture Content Permissible substrate moisture content without underfloor heating | For cement screeds | <6 % CM (carbide meter) | | For anhydrite screeds | <0.5 % CM | | For magnetite flooring | 3–12 % CM (depending on the organic content) |
Permissible substrate moisture content for use with underfloor heating | For cement screeds | <6 % CM | | For anhydrite screeds | <0.3 % | | For magnetite flooring | 3–12 % CM (depending on the organic content) |
To check the moisture content, use the “Rubber Mat Test”, according to ASTM. A polyethylene sheet of > 1x1 m in dimension shall be taped to the concrete surface. Leave the polyethylene sheet in place for > 24 hours prior to testing. This test allows for the detection of any condensed vapour transmissions.
Note: CM: carbid method, to determine the moisture content of the substrate. For all moisture contents, the quality of the substrates and surfaces, always follow the guidelines of the wood flooring manufacturer. Pot Life | Ambient air temperature | Pot life | | +10 °C | ~60 min | | +20 °C | ~30 min | | +30 °C | ~15 min |
Note: Do not use mixed material after pot life. Curing Time | Conditions | Curing time | | +10 °C | ~18 h | | +20 °C | ~12 h | | +30 °C | ~6 h |
Note: Curing speed is dependent on temperature, relative humidity and absorption of substrates. High temperature and low r.h. decrease curing time. Cured material becomes transparent. |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
