Polytex® Fassade FR must be placed on the outside (cold side) of the insulation layer. The surface area of openings in exterior facades cannot exceed 20% of the total facade surface area, and each opening cannot be wider (or higher) than 20 mm. Always use stainless steel staples to attach Polytex® Fassade FR. Always attach Polytex® Fassade FR to slats. Space between slats: c.t.c. 300 mm vertical, c.t.c. 600 mm horizontal. Maintain an air cavity of minimum 20 mm between the facade finish and the Polytex® Fassade FR. Allow the Polytex® Fassade FR to extend past the last slat by a minimum of 100 mm and use VAST-R® Facade tape to tape to the underlying construction. VAST-R® Butyl tape must be placed under the battens to create an effective water barrier, and to extend the lifespan. Finish off facade openings and recesses using VAST-R® Facade tape.