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Sika Primer-290 DC, Clear Primer for Bonding Timber Decking Strips, Interior & Exterior, Yellow

Sika Primer-290 DC, Clear Primer for Bonding Timber Decking Strips, Interior & Exterior, Yellow

Primers, Paints & Pigments
Sika

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 250 ml
Chemical Base Solvent-based Polyurethane solution
Usage Improves adhesion on woods and GRP; professional use only
Application Method Brush or spray
Usage Area Interior & Exterior
Color Colourless, slightly yellow
Service Temperature +5 °C min. / +40 °C max.
Storage Conditions N/A
Density N/A
Consumption 50 ml/m2

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.
Packaging

Can

250 ml
1000 ml
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

Consumptiondepending 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 ProcedureA)stored in sealed container in up-right position in a dry place at ≤ 25 °C
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.

 

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.