Non-pigmented, solvent-based primer for bonding and sealing timber decking strips Sika® Primer-290 DC is a solvent-based colourless to slightly yellow primer, which reacts with moisture and forms a thin layer. This layer acts as a link between substrates and adhesive/sealant. Sika® Primer-290 DC is specifically formulated for the treatment of timber decking strips prior to caulking with Sikaflex®-290 DC or bonding with Sikaflex®-298. |
Usage Sika® Primer-290 DC is used to improve adhesion on Teak, Mahogany, Oregon pine and GRP based on polyester.
Seek manufacturer’s advice and perform tests on original substrates before using Sika® Primer-290 DC on materials prone to stress cracking.
This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility. Advantages Removes dirt, dust, oil and grease. |
Typical Product Data| Chemical base | | Solvent-based Polyurethane solution | | Colour (CQP001-1) | | Colourless, slightly yellow | | Solid content | | 34 % | | Application temperature | | 5 ─ 40 °C | | Application method | | Brush or spray | | Consumption | depending on substrate porosity | 50 ml/m2 | | Flash-off time | ≥ 15 °C< 15 °Cmaximum | 60 minutes 120 minutes 24 hours | | Shelf life | | 12 months A |
| CQP = Corporate Quality Procedure | A)stored in sealed container in up-right position in a dry place at ≤ 25 °C |
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Technical Information IMPORTANT NOTE Sika® Primer-290 DC is a moisture reactive system. In order to maintain product quality it is important to reseal the container with the inner plastic liner immediately after use. Once the surface pre-treatment operation is completed, the cap has to be screwed on. Dispose of product approx. one month after opening if used frequently or after two months in case of infrequent use. 30 ml cans are for single application only. If gelling, separation or a significant increase in viscosity is noted, discard the primer immediately. Never dilute or mix this product with any other substances. If used on transparent or translucent substrates such as plastics, etc., an adequate UV protection is mandatory.
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Application Information METHOD OF APPLICATION Surfaces must be clean, dry and free from grease, oil, dust and contaminants. Adhesion on substrates may be improved by adding and/or combining pre-treatment processes such as scuffing and cleaning. Primer Application Apply a thin but covering coat of Sika® Primer-290 DC with a clean, dry brush.
Be sure that the teak is completely covered by the primer but avoid excess of material.
Primed surfaces should be left for a minimum of 60 minutes before sealing or bonding with Sikaflex® products.
In case of spray application contact the Technical Department of Sika Industry.
Ideal application and surface temperature are between 15 °C and 25 °C.
Sika® Primer-290 DC has to be applied once only. Care must be taken to ensure that this single application gives adequately dense coverage. Consumption and method of application depend on the specific nature of the substrates. Tightly reseal container immediately after each use. For advice on selecting and setting up a suitable spray equipment, contact the System Engineering Department of Sika Industry. |
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.
