POLYCRYL

Description

Acrylic based waterproofing coating

 

Polycryl is a superior grade, single component; pure acrylic based waterproofing and protective coating for concrete & masonry surfaces. The coating is durable, flexible and has a high resistance to UV. The coating is suitable for both interior and exterior application

Properties

  • Excellent UV, weatherability & color retention properties
  • Single component. Easy to use
  • Excellent resistance to water and moisture
  • Excellent resistance to carbon dioxide diffusion
  • Excellent resistance to chloride ion penetration
  • Breathable
  • Good abrasion resistance properties
  • Heat resistant & high solar reflectance
  • Environmentally friendly. Low VOC (<10 g/lt)
  • Excellent adhesion on most porous and nonporous substrates

This TDS is applicable for the United Arab Emirates only. Please contact your local Polybit sales office for the available TDS in your region

Step by Step

Substrate Preparation

The surface must be structurally sound and free of oil, grease, dust and other contaminants which will affect the bonding. Any structural cracks and potholes shall be repaired with a suitable repair mortar from the Polycrete* range of repair mortars. The surface to be treated should be presaturated with water prior to application. However, any standing water shall be removed prior to application.

Primer

A primer coat is recommended, particularly on the vertical surfaces to seal the pores and stabilize the surface. The primer coat can be made in the site by diluting the Polycryl 1 to 1 with water. The primer should be applied at a coverage rate of 5m²/L. Allow the primer to become tacky (approx 30minutes at 23°C 50% RH) prior to the application of the top coating. On horizontal surfaces Polycryl can be applied directly without primer provided that recommended surface preparation has been carried out.

Mixing

Polycryl is single component but stirring of the pail is recommended prior to the application of the coating. This will remove any sediment which may occur during storage. The use of a slow speed drill and suitable paddle should be used in order to avoid the formation of air bubbles.

Application

Apply the coating with a brush, roller or airless spray. Allow the coating to dry completely before applying the subsequent coats. 2 coats should always be applied; the second coat at 90° to the first. We recommend that a non-woven geo-textile membrane be embedded into the first coat whilst it is still wet at all expansion joints projections and corner fillets to reinforce these areas. Allow the final coating to cure fully (72 hours) after which it can be put in service. For roof applications, the coating should be applied @1.2 lt/m²/coat for a DFTof 1.5mm in 2 coats.

Protection

As a protective coating on concrete/render/plaster surfaces, the coating should be applied @0.75 L/m²/coat for a DFT of 1mm in 2 coats.