Sikaflex 290DC PRO is a one part polyurethane sealant which has been specially developed for grouting deck joints (teak). Sikaflex 290DC PRO has very good weather resistance, making it suitable for exposed joints in the marine sector, which are exposed to direct weathering. Packaging: 300 ml cartridge.
Sikaflex 290DC PRO meets the requirements of the International Maritime Organisation (IMO).
Advantages
- Very good weathering resistance
- Tough and durable
- Quick and easy to sand
- Optimum flow properties
- Stays smooth for a long time
- Saltwater and freshwater resistant
Application areas:
Sikaflex 290DC PRO is used to cover strips (teak) on marine vessels.
This product is only suitable for experienced users. In order to ensure adhesion and material compatibility, preliminary tests must be performed with the original materials under the respective conditions.
Processing instructions
Substrate Preparation
Surfaces must be clean, dry and free of dust, oil and grease.
A suitable primer must be used for wooden substrates, e.g. Sika Primer 290DC. Additional pre-treatment steps, e.g. for connecting joints at the deck edge, depend on the respective substrates and must be tested in advance.
Application
Apply the sealant with a suitable pump system or piston rod pneumatic gun. Sikaflex 290DC PRO can be applied between +5 ° C and +35 ° C. Changes in reactivity and application must be observed. The ideal application temperature is between +15 ° C and +25 ° C.
| Chemical base |
1-K polyurethane |
| Colour |
Black |
| Hardening mechanism |
Moist hardening |
| Application temperature |
+5 °C to +35 °C |
| Skin formation |
approx. 90 min |
| Volume change |
approx. -3% |
| Hardness (ISO868) |
approx. 40 |
| Operational temperature |
-40° C to +90° C |
Which grout is suitable for my boat?
Before starting work, check which sealant was previously used and make a
burn test. This involves removing a small amount of the grout and burning it in a controlled manner. The following reaction to the combustion gives an indication of the chemical composition of the joint sealant:
- Silicone is difficult to ignite, usually only burns briefly and goes out quickly. Often smells of burnt rubber and leaves a white, powdery residue.
- Polyurethane is relatively easily flammable, burns persistently with a sooty, yellowish-bright flame. Strong chemical, often strong odour. Charred or ash-like residues.
- Epoxy is highly flammable, burns with a bright, intense flame and chars quickly. Very strong smell of chemicals. Hard, glassy residues that are often brittle or charred.
- Silane-modified polymers are less flammable and burn with a weaker, less sooty flame. Chemical, but not very intense odour. Sticky or slightly charred residue.