Cromar Elasta-Thane Super Seal Primer is a one component, low viscosity, polyurethane based primer suitable for many different substrates.

It is characterised by its very low viscosity and balanced curing speed which result in excellent wetting, impregnation and paint-over time on different substrates, whether of high, low or no porosity (e.g. glass and metals).

The cured film displays outstanding mechanical properties: Its elongation is >300%, and its tensile strength surpasses 30 N/mm².

The adhesion strength of Elasta-Thane Super Seal Primer exceeds the requirements of 3456 (European Organization of Technical Approval).

Recommended for use as primer for:

• Concrete structures
• Ceramic tiles
• Non-porous substrates like glass, marble & metals

Quick Links - Click To Jump To Section:

• Features & Benefits
• Limitations
• Application Procedure
• Important Application Notes
• Coverage
• Cleaning
• Shelf Life

Features & Benefits

• One component
• Of low viscosity
• Easily applied
• Adheres strongly, even on glassy, non-porous substrates
• Excellent wetting, impregnation and paint-over time
• Outstanding mechanical properties: >300% elongation, tensile strength surpasses 30 N/mm²
• See Cromar Elastathane Detailer for vertical applications
• Recommended for use as primer for concrete structures, ceramic tiles, and non-porous substrates like glass, marble & metals

Limitations

Will discolour when used alone & left exposed. This is purely visual and does not affect the performance of the membrane.

Any imperfections & hollows must be sealed & levelled prior to primer application to ensure there is no ponding of primer.

Do not apply primer at greater application rates than recommended to ensure correct curing period.

Applying too much primer can result in topcoat imperfections in the final finish of the cured membrane.

The primer must be touch dry & not tacky before topcoat application.

Application Procedure

Repair & level any surface imperfections prior to primer application. Where possible clean the surface using a high pressure washer.

Remove oil, grease and wax contaminants, cement laitance, loose particles, mould release agents. Any cured membranes must also be removed. If a solar reflective coating is present carry out an adhesion test.

Mark out area to ensure correct dosage & coverage rates, do not allow primer to pond.

Apply with brush or roller.

Once cured, Elasta-Thane 25 can be applied.

Important Application Notes

• Under no circumstances are Primers or Topcoats to be applied at temperatures below 5℃
• It is essential that all Primers and Topcoats are allowed completely dry before over-coating.
• Drying time will depend on the local climatic conditions, and the lower the ambient and surface temperature, the greater will be the drying time. (Can be between 2 hours and 2 days.)
• Applicators must physically check before continuing
• DO NOT APPLY UNLESS DRY

Coverage

Approx: 100- 200gr/m² , subject to substrate porosity.

Cleaning

Clean tools and equipment first with paper towels and then wipe by using Solvent-01. Rollers will not be re- useable.

Shelf Life

Elasta-Thane Super Seal Primer can be kept for a maximum of 24 months in the original unopened pails at a temperature of 5℃ to 25℃ in dry places.

Once opened, use as soon as possible.