How to Choose Tile Adhesive for Exterior Stone Slab Installation
Product/application focus: Products: FA407 Grey, FA455 White Stone slab installation on exterior surfaces requires a product selected for the intended application and a carefully prepared substrate. Large or heavy finishes also demand professional handling and correct installation technique. FASTX FA407 and FA455 are the Type 3 tile adhesive options intended for exterior surfaces and stone slab pasting. FA407 is grey and FA455 is white, giving installers a choice based on the application and desired adhesive colour. Before installation, the substrate should be clean, sound and properly prepared. The adhesive should be mixed according to the stated product ratio of 4:1 adhesive to water and applied within the recommended working period. FASTX specifies a bed thickness range of 3–20 mm. The product range also provides a stated open time of not less than 20 minutes, pot life of 45 minutes and adjustment time of not less than 20 minutes under the specified conditions. For exterior stone work, product selection should always be matched to the project conditions, stone type, substrate and installation method. Professional application and compliance with the relevant technical instructions are essential for a successful result.
