EWI-225 Premium Adhesive - 25kg bag

EWI-225 Premium is a very strong and most flexible adhesive used to fix polystyrene and mineral wool panels and also to embed reinforced mesh. It consists of mineral binders, synthetic fibres, mineral fillers and modifying admixtures. It is used in render-only systems as a basecoat, where it eliminates the need for priming prior to skim-coating, reducing time and costs. Once mixed with clean water it becomes a homogeneous white adhesive putty. EWI-225 can be used on a variety of surfaces, such as concrete, light-aggregate and cellular concrete, ceramic or silicate surfaces. This adhesive can be used on untreated, plastered, painted or on textured external surfaces. It has excellent water and frost resistance, breathability, hydrophobic properties, strength and high elasticity.

CHARACTERISTICS

• Ease of Application,
• Can be used on a variety of substrates,
• Quick drying,
• Contains microfibres for increased flexibility,
  
• Highly breathable,
• Water-resistant
• Frost-resistant,
• Excellent adhesion to substrates and EPS panels
  

• Remove all loose or peeling plaster coats.
• Level out the cleaned substrate with levelling mortar EWI-260.
• Wall surface, plastered or not, should be wire brushed and rinsed with hydrant water and allowed to dry. Highly absorptive and dusty substrates should be primed with EWI-301.
• Add EWI-225 dry mixture slowly to a container with 6.5 litres of clean cool water. Mix with a slow-speed mechanical mixer to achieve a uniform, lump-free consistency. Allow to cure for about 5 minutes and then mix again thoroughly.
• Hardened mortar should not be mixed with fresh material.
• Apply a portion of the adhesive to the EPS panel and spread it with an appropriate trowel.
• On flat substrates, apply the adhesive to the entirety of the insulation board using a notched trowel.
• Put the panel on the substrate surface and press to make it flush.
• Allow the adhesive to dry completely before attempting to install the mechanical fixings through the mineral wool insulation boards.
  
• When adding the reinforced mesh, before drying, the mesh needs to be embedded within the basecoat adhesive.
• Work must not be carried during rain or snow, strong winds and in direct sunlight, without special shields to limit exposure to weather conditions.
• The average drying time is 12-48 hours depending on weather conditions.

• European Technical Approval No. ETA-07/0192