Sika® Primer-190

12 months from date of production

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +35°C. Protect from direct sunlight, heat and moisture.

~ 0.98 g/ml (mixed)

+5°C min. / +40°C max. (3°C above dew point temperature)

+5°C min. / +40°C max. 

For 15 mm deep joints (2x15 mm adhesion area): approx. 6 ml/m' or 200 ml/m². These consumptions are theoretical, and they can vary according to the roughness of the substrate. During the application, coverage can decrease up to 50 % due to surface roughness. It is essential to carry out representative trials on site to evaluate the exact consumption.

• Old coating systems of unknown composition must always be removed.
• All substrates (new and old) must be structurally sound, dry, free of laitance and loose particles and clean of oil, grease, rubber skid marks, paint stains and other adhesion impairing contaminants.
• When the primer is applied, the concrete must be at least seven days old and have reached at least 70 % of its 28-day strength value.
• Apply masking tape on the outer sides of the joint to prevent staining. When priming the contact surfaces of joints, the round polyethylene string must be positioned in the joint before the primer is applied.
• For metal substrate, remove rust oil stains and grease from the substrate with a suitable oil remover. Do not allow flash rusting of the surface.
• Fill deep joints with closed cell polyethylene backer rod which must not be damaged during the application. Do not use backer rods containing bitumen or tart.
• For metal substrate application, please contact Sika Technical Service for advice.

• Sika® Primer-190 is supplied with A-component and B-component in the correct ratio. When mixing the two components, you must observe the following points. Make sure that you pour the entire B-component out of its container into A-component. Continue mixing until you have produced a homogeneous mixture without any residue – you must mix the components for at least one minute or until you have produced a homogeneous mixture, whichever is longer. You can also use a suitable hand-held stirrer.
• When you have mixed the components, you may remove part of the primer from the container. You must then close the container tightly.
• The appearance of Sika® Primer-190 does not change, even if it is no longer suitable for application. You must therefore make sure that all the material is used within 6 hours after mixing (at 23°C). During this time, the consumption might increase due to increasing viscosity.
• Please note that after mixing A and B components, the mixture might turn into slight pink colour in the container. This is normal and it will not color stain the substrate.

• Apply the primer generously to the adhesion surfaces for the joint sealing material using a brush.
• In order to ensure full curing, the material and substrate temperatures must not be lower than the minimum limit at any location or at any point during the curing time.
• Primer must not be applied on the surface of polyethylene backer rod. After the primer becomes tack free, sealant application should be started.
• The joint sealant has to be applied within the open time of minimum 2 hour to maximum 6 hours at 23°C.
• In case the primer become completely dried, or time exceeded 6 hours, then sealant application should not be started, joint surfaces must be reprimed again with Sika® Primer-190. No surface preparation needed, only make sure the surfaces are clean and dust-free.
• If the joint is not sealed withing 24 hours, the cured primer should be removed and joint reprimed.

• Fresh material may be removed from tools using a solvent. Once the primer has hardened, it can only be removed mechanically.
• Safely dispose all the used brushes.