Stick A Tile Key Product Also Provides Excellent Water Resistance And Improved Flexibility. Application: When Used As A Primer Or Keying Agent, Stick A Tile Key Should Be Brushed Onto The Surface. Multiple Coats Can Be Applied But We Recommend That Each Coat Not Exceed 1.6 Mm As Crazing May Occur. Wait Approximately 30 Minutes Between Each Coat. It Is Recommended That Each Coat Be Applied At Right Angles Across Each Other Ensuring Total Coverage. When Using As A Basecoat, Stick A Tile Key Must Be Used As A Slurry Consisting Of 1 Part Stick A Tile Key To 2 Parts Stick A Tile Basecoat (By Volume). Apply The Mixture To The Substrate With A Block Brush To A Thickness Of Approximately 2mm, But Not Thicker Than 5mm. Allow To Dry For 24 Hours Before Tiling. Available In 1l, 5l, 25l.