Quantity Guide for Flexible Additive

Flexible additive is used in grouts where flexibility is required.  It is uneconomic to use a flexible additive in ordinary rapidset adhesive; instead, use a flexible adhesive.

Manufacturers specific instructions are given on the back of the packaging, but as a general rule:

• Flexible additive is mixed 1 to 1 with water and the additive/water mix used to mix up the powder product.
• A 2.5l pack of flexible additive mixed 1 to 1 with water will mix 20kg of grout powder.