Sika Mix Powdered Mortar Plasticiser - 250 Pack

Each sachet is designed to treat one 25kg bag of cement. Add one sachet per 25kg of cement in your mortar mix.

This product is specifically designed for brick and blockwork mortars. While it might offer some benefits in certain plastering applications, its primary formulation and testing are for mortar. For plastering, Sika offers specific products.

A plasticiser makes mortar more workable and cohesive. It allows for a reduction in water content while maintaining or improving workability, leading to increased strength and durability.

Yes, the Sika Mix Powdered Mortar Plasticiser enhances the frost resistance of mortar, making it more suitable for use in colder climates and reducing the risk of frost damage during curing.

By reducing the water requirement and improving the hydration of the cement, the plasticiser helps to bind soluble salts within the mortar matrix, thereby reducing their migration to the surface.

Store the sachets in a cool, dry place, ensuring they remain sealed and protected from moisture until ready for use.

EN 934-3 is a European standard that specifies requirements for mortar plasticisers (limiting-water-regulating admixtures). Compliance indicates the product meets defined performance criteria for its intended use.

Ensure the sachet was fully mixed into the dry components before adding water. Check that the correct water content for the mortar mix has been used; the plasticiser reduces water demand, so over-watering can negate its benefits.

While the plasticiser reduces efflorescence, other factors like highly soluble salts in aggregate or cement, or excessive water during application and curing, can contribute. Ensure good drainage and consider using low-solubility materials if efflorescence is a significant concern.

This may indicate exposure to moisture. Store in a dry environment. If clumping is minor, the powder may still be usable, but check for caking and ensure it mixes evenly.