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Impermax Primer (Porosity Sealer Flex)

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Impermax Primer (Porosity Sealer Flex)

At a glance

  • Primer for Impermax
  • For EPDM, PVC and Bitumen
  • Easy to use
Read more about this product

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Product description

Porosity Sealer Flex is a 1-component primer specially developed for Impermax roofing. The flexible aromatic, moisture-curing polyurethane resin improves adhesion on EPDM and PVC roofs. In addition, this primer prevents 'bleeding' of bitumen on white roofs. It is an excellent polyurethane primer for repainting old bituminous layers with polyurethane waterproofing systems such as Impermax B1K (black) and Impermax LY (white).

Benefits of Impermax Primer

  • Easy to use.
  • Suitable as primer for Impermax roofing.
  • Improves adhesion on EPDM and PVC roofs.
  • Prevents 'bleeding' of bitumen on white roofs.

When do you use Impermax Primer?

You can easily use this primer on EPDM, PVC and bituminous roofs:

EPDM & PVC roofs

To increase adhesion on this type of roof, we recommend applying Porosity Sealer Flex before covering the roof with Impermax liquid roofing.

Bituminous roofs

Are you going to work on a bitumen roof? Then a primer is not always necessary, especially if you use black Impermax B1K, because this hybrid system already contains bitumen and polyurethane. With white roofs, however, the bitumen may stain on the white Impermax coating, because Impermax dissolves part of the old coating. You can prevent this by first treating the roof with this primer or by applying two layers of Impermax LY. The first layer then serves as a primer layer.

Directions for use

Preparation
Impermax Primer (Porosity Sealer Flex) is easy to apply to the surface. Make sure the surface is dry and dust-free for optimal adhesion. Also repair possible roof blisters before applying the primer. Process at a minimum temperature of 0°C and a maximum temperature of 30°C. Higher temperatures may cause blistering under the primer due to the rapid evaporation of the solvent.

Application
Apply the primer with a roller, brush or airless spray equipment. We recommend using the entire contents of the can. If you have any material left over after use, close the container tightly and store it carefully. You can apply Porosity Sealer Flex without any problems. Would you rather dilute it (up to 25%)? Then only use Rayston PU Solvent for this and no other thinners.                                          

Curing
The cure time of the primer strongly depends on the environmental conditions. The higher the temperature and humidity, the faster Porosity Sealer Flex cures. Usually the primer is hand-dry after 5 hours at 25°C and 50% humidity. If the primer is hand-dry, you may apply a second coat up to 48 hours after drying. It is important that all solvents are dissolved before applying a second layer. This will prevent air bubbles from forming under the surface of the primer.

Now allow to cure again before continuing with the application of Impermax B1K or Impermax LY.

Specifications

Contents: 4 kg, 20 kg
Colour: transparent to light yellow
Consumption: 100-300 gr/m2
Processing time: 2 hours
Cure time: 5 hours
Processing temperature: 0-30°C
VOC content: 69%
VOC content: 330 g/l
Viscosity: 350 mPa.s (20°C)
Hardness: Shore 65A (ISO 868)
Temperature resistance: 80°C
Shelf life: until 12 months after production date

 

 

Product properties

The key technical properties clearly listed in one place.

Article number
DAK001637
0-30 °C
5 hours
Shore A 65
100-300 g/m²
Net contents
20 kg, 4 kg
Approximately 120 minutes
350 mPa·s (20 °C)
330 g/L, 69%

Safety information

Read the warnings and use appropriate protective equipment before handling the product.

Recommended protective equipment

Hazard pictograms

Warnings and precautions

H226 Flammable liquid and vapour.
H317 May cause an allergic skin reaction.
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 [In case of inadequate ventilation] wear respiratory protection.
P342+P311 If experiencing respiratory symptoms: Call a POISON CENTER/doctor/…
P370+P378 In case of fire: extinguish with extinguishing powder, CO2, alcohol-resistant foam or water spray
EUH208 Contains 4,4'diphenylmethane diisocyanate, oligomers. May produce an allergic reaction.

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